Index of CAD/AP (Accelerator Physics) Notes

[Internal-only viewable C-AD notes]

NUMBER

DATE

TITLE/AUTHOR

C-A/AP/1

10/99

Implications of Unshielded Bellows in RHIC [PDF]
M. Blaskiewicz

C-A/AP/2

10/99

Transferring Polarized Proton Beam from AGS to RHIC at Energies below the Spin Resonance G g=36+ny [PDF]
N. Tsoupas, M. Bai, H. Huang, T. Roser

C-A/AP/3

10/99

Pulsing the AGS Main Magnets off the AC Line [PDF]
I. Marneris & A. Soukas

C-A/AP/4

10/99

On the Possibility of Observing Transverse Echos in RHIC [PDF]
O. Bruning, W. Fisher, B. Parker

C-A/AP/5

10/99

Effects of a Lowered RHIC Injection Momentum [PDF]
M. Brennan, W. Fischer, C. Schultheiss and N. Tsoupas

C-A/AP/6

10/99

Pre-conceptual Design of a Rapid Cycling Medical Synchrotron [PDF] [Postscript]
AES: A. Favale, T.Myers, J. Rathke, J. Sredniawski, A. Todd BNL: D. Barton, M. Brennan, A.Z. Diaz, D. Lowenstein, A. Luccio, S. Peggs, A. Pendzick, D. Phillips, P. Pile, T. Roser, J. Sandberg, S. Tepikian, J. Tuozzolo, W. T. Weng, S.Y. Zhang LBL: B. Ludewigt

C-A/AP/7

11/99

RF Capture and Acceleration of Gold Ions in Booster [PDF]
C.J. Gardner

C-A/AP/8

01/00

High Intensity Proton Injection at the Booste [PDF]
S.Y. Zhang

C-A/AP/9

01/00

The RCMS dipole aperture and beam pipe [PDF] [Postscript]
S. Peggs, W. Meng, T. Roser, N. Tsoupas, J. Tuozzolo

C-A/AP/10

03/00

Polarized proton beam acceleration with a single Siberian Snake in each RHIC ring [PDF]
A. Lehrach, A. U. Luccio, T. Roser

C-A/AP/11

03/00

Suppressing Intrinsic Spin Harmonics at the AGS [PDF]
A. Lehrach, E. D. Courant, J. W. Glenn, H. Huang, T. Roser

C-A/AP/12

03/00

Running the AGS MMPS at 5 HZ, 24 GEV [PDF]
I. Marneris & A. G. Ruggiero

C-A/AP/13

03/00

Spin Tracking with "Real" Siberian Snakes in RHIC [PDF]
M. Xiao & T. Katayama

C-A/AP/14

04/00

Accelerator Physics issues in eRHIC [PDF] [POSTSCRIPT]
I. Ben-Zvi, J. Kewisch, J. Murphy, S. Peggs

C-A/AP/15

04/00

Notes on Switching between Proton and gold Operation in Booster and AGS [PDF]
L.A. Ahrens, C. J. Gardner

C-A/AP/16

05/00

SNS Project-Wide Beam Current Monitors [PDF]
M. Kessleman, R. Witkover, L. Doolittle, J. Power

C-A/AP/17

05/00

Energy Deposition Downstream of RHIC Polarimeter [PDF]
H. Huang

C-A/AP/18

06/00

Prediction of Long Term Stability by Extrapolation [PDF]
G. Parzen

C-A/AP/19

07/00

Measuring " 1 in RHIC [PDF]
M. Blaskiewicz, J. M. Brennan, P. Cameron, A. Drees, J. Kewisch, T. Roser, K. Smith, C. Tang

C-A/AP/20

07/00

Resonance Model of Ferrite Assembly for Window Frame Magnet Kicker Impedance [PDF]
S.Y. Zhang

C-A/AP/21

12/00

Update of the LHC Interaction Region Nonlinear Corrector Studies [PDF]
W. Fischer, F. Pilat and V. Ptitsyn

C-A/AP/22

10/00

Plan for beam studies at RHIC and summary of activity during Run 2000 [PDF]
F. Pilat, M. Bai, A. Drees, W. Fischer

C-A/AP/23

09/00

The RHIC Beam Dump Commissioning - Status Report [PDF]
L. Ahrens

C-A/AP/24

09/00

Water Temperature vs. BtA Stability Explored [PDF]
P. Sampson, C. Karns

C-A/AP/25

09/00

Novel Source & Ionizer Options for Polarized Ions [PDF]
A. Hershcovitch

C-A/AP/26

10/00

Overview of the YEAR 2000 Au+32 Booster Run [PDF]
K. Zeno

C-A/AP/27

10/00

Tracking studies in RHIC using measured magnet data [PDF]
G. Parzen

C-A/AP/28

10/00

RF Capture and Acceleration of Gold Ions in Booster - II [PDF]
C. J. Gardner

C-A/AP/29

10/00

RF Capture Simulation for Gold Ions in AGS [PDF]
C.J. Gardner

C-A/AP/30

11/00

RHIC Corrector Power Supply Connections [PDF]
H. Hahn, S. Tepikian

C-A/AP/31

11/00

Five Quenches during the 2000 RHIC Gold Run [PDF]
L. Ahrens

C-A/AP/32

11/00

Beam-based Measurements of Persistent Current Decay in RHIC [PDF]
W. Fischer, A. Jain and S. Tepikian

C-A/AP/33

11/00

Coupling Matrices in AGS with different types of partial snakes [PDF]
E. D. Courant

C-A/AP/34

12/00

Beam Polarization Distribution for the Relativistic Heavy Ion Collider [PDF]
A. Lehrach, A.U. Luccio, W.W. MacKay, T. Roser

C-A/AP/35

12/00

Proposal for Commissioning the RHIC BLM Threshold System [PDF]
M. Bai, L. Ahrens, D. Gasssner, S. Nemesure, R. Michnoff, T. Russo

C-A/AP/36

01/01

Correction and Additions to CA/AP/33
Coupling Matrices in AGS with different types of partial snakes [PDF]
E. D. Courant

C-A/AP/37

02/01

Crossing a Coupling Spin Resonance with an RF Dipole [PDF]
M. Bai, T. Roser

C-A/AP/38

02/01

Intra-beam Scattering Scaling for Very Large Hadron Colliders [PDF]
J. Wei

C-A/AP/39

02/01

A Super-Conducting Linac Injector to the BNL-AGS [PDF]
D. Raparia and A.G. Ruggiero

C-A/AP/40

02/01

A Super-Conducting Linac as a new Injector to the BNL-AGS [PDF]
A. Ruggiero

C-A/AP/41

03/01

Spin Matching for weak intrinsic resonances in the AGS [PDF]
V. Ranjbar, S.Y. Lee, A. Lehrach

C-A/AP/42

03/01

A Computer code to measure the Beam Emittance and Beam Parameters of the ATR Line [PDF]
N. Tsoupas, W. Glenn, S. Tepikian, W. MacKay, L. Ahrens

C-A/AP/43

 

RESERVED

C-A/AP/44

03/01

Beam Growth in Measurements in RHIC with Gold at Injection [PDF]
W. Fischer, et al

C-A/AP/45

03/01

Transverse Coupling Impedance of the RHIC Injection Kicker [PDF]
H. Hahn and D. Davino

C-A/AP/46

03/01

The New Booster Dump and Dump Bumps [PDF]
C.J. Gardner

C-A/AP/47

04/01

Electron Cooling for RHIC [PDF]
V. Parkhomchuk, I. Ben-Zvi 

C-A/AP/48

04/01

Secondary Electron Survival in the Bunch Gap [PDF]
S.Y. Zhang

C-A/AP/49

08/01

VLHC Accelerator Physics [PDF]
Editors:  S. Peggs, M. Syphers

C-A/AP/50

05/01

RHIC Resistive Wall Coupled Bunch Instability [PDF]
S.Y. Zhang

C-A/AP/51

05/01

Luminosity Upgrade Options for RHIC [PDF]
W. MacKay, et al

C-A/AP/52

05/01

Transverse Coupling Impedance of the RHIC Abort Kicker [PDF]
H. Hahn, D. Davino

C-A/AP/53

05/01

RHIC Optics for Transition Jump [PDF]
J. Kewisch, C. Tang

C-A/AP/54

06/01

Fast Extracted Beam (FEB) for the g-2 Experiment [PDF]
N. Tsoupas, et al

C-A/AP/55

05/01

Analytical Field Calculation of Helical Magnets with an Axially Symmetric Iron Yoke [PDF]
T. Tominaka, M. Okamura & T. Katayama

C-A/AP/56

05/01

Analysis of Low Energy AGS Polarimeter Data and Potential Consequences for RHIC Spin Physics [PDF]
R. Cadman, H. Huang, K. Krueger, H. Spinka, D. Underwood & A. Yokosawa

C-A/AP/57

06/01

Determination of Maximum Allowed Radiation/Beam-Loss Limit at the Location of VQ12 Quadrupole of the V-line [PDF]
N. Tsoupas, G. Bunce

C-A/AP/58

06/01

Preliminary Instability Studies in RHIC [PDF]
M. Blaskiewicz

C-A/AP/59

06/01

Measurement of resonance Driving Terms in RHIC[PDF]
W. Fischer, F. Pilat, F.Schmidt

C-A/AP/60

08/01

Quadrupole Kicker for RHIC [PDF]
O. Dressler

C-A/AP/61

09/01

RHIC as a Test Bench For Beam-Beam Studies  [PDF]
W. Fischer and S. Peggs

C-A/AP/62

09/01

Analytical Field Calculation of Helical Magnets with an Axilly Symmetric Iron Yoke [PDF]
T. Tominaka, M. Okamura and T. Katayama 

C-A/AP/63

09/01

Proposal for an Optical RHIC IPM [PDF]
R. Connolly

C-A/AP/64

09/01

Multi-turn Injetion of Heavy-Ions in Booster with the H-Minus Injection Foil Inserted [PDF] [PS]
C. J. Gardner

C-A/AP/65

10/01

Study of a Circular RFQ Storage and Accelerator Ring [PDF]
A. G. Ruggiero

C-A/AP/66

08/01

An Alternative Scheme for the Neutrino Factory with a High Power Proton Driver [PDF]
A. G. Ruggiero

C-A/AP/67

01/02

RHIC Vacuum Pressure Bump [PDF]
S. Y. Zhang

C-A/AP/68

01/02

Experimental Study of Beam Parameters Extracted from a Flag in the U Line – an attempt to quantify errors [PDF]
L. Ahrens

C-A/AP/69

02/02

A high precision model of Booster Tune Control [PDF]
K. Brown, W. van Asselt, W. Meng

C-A/AP/70

02/02

Alternative Beam Optics for U-Line for “lossless” Beam Transport to the “neutrino-line” [PDF]
N. Tsoupas, L. Ahrens, W. Glenn, K. Brown, BNL; M. M. Murray, LANL

C-A/AP/71

04/02

Electron Cloud Measurements and Simulation for RHIC [PDF]
W. Fischer, J.M. Brennan, M. Blaskiewicz, T. Satogata

C-A/AP/72

05/02

Tune Modulation from Beam-Beam Interaction and Unequal Radio Frequency in RHIC  [PDF]
W. Fischer, P. Cameron, S. Peggs and T. Satogata

C-A/AP/73

05/02

RHIC Pressure Rise Case Study [PDF]
S.Y. Zhang and H.C. Hseuh

C-A/AP/74

06/02

Improvements to the RHIC Injection Kicker System [PDF]
H. Hahn, W. Fischer, Y. K. Semertzidis

C-A/AP/75

06/02

Observation of Coherent Beam-Beam Modes in RHIC [PDF]
W. Fischer, et al

C-A/AP/76

07/02

Calculation of the Mean Energy Loss in the BTA Stripping Foils and Comparison with Measurement [PDF]
L.Ahrens and C.J. Gardner

C-A/AP/77

07/02

Coupling measurement and correction during RHIC run 2001 and development for 2003 [PDF]
F. Pilat, M.Bai, J. Beebe-Wang, J. Cardona, W. Fischer, V. Ptitsyn

C-A/AP/78

08/02

retrack:  simulating particle passage through excited resonances [PDF]
K.A. Brown

C-A/AP/79

08/02

Determining the Momentum of a Beam Accelerating in the AGS A Gauss Clock Calibration, and Associated Parameter Determination [PDF]
L. Ahrens, M. Harvey

C-A/AP/80

07/02

AGS Circumference Change when Pulsing 3/2 Lamdba G10 Bump [PDF]
J. W. Glenn and M. Harvey

C-A/AP/81

08/02

Measurement of Sextupolar Resonance Driving Terms in RHIC [PDF]
W. Fischer, F. Schmidt, R. Tomas

C-A/AP/82

08/02

Analysis and Measurement of Cross-Talk in a Superconducting cavity [PDF]
Y.Zhao

C-A/AP/83

09/02

Collision optics in the RHIC 2 o’clock interaction region [PDF]
F. Pilat, V. Ptitsyn

C-A/AP/84

10/02

Dynamic aperture studies towards a γt sextupole jump in RHIC [PDF]
C. Montag, J. Kewisch

C-A/AP/85

10/02

Determining the Ratio of the Horizontal β functions at BTA Multiwires MW006 and MW060 by Scanning the Emmitance [PDF]
K. Zeno

C-A/AP/86

10/02

A Comparison of High Intensity Proton Efficiencies for Rf Harmonics 1 and 2 [PDF]
K. Zeno

C-A/AP/87

11/02

Comparison of IBS Effects in Electron Cooling Simulation Codes [PDF]
D.Wang

C-A/AP/88

11/02

Investigation of Helical Pitch on B [PDF]
W. MacKay

C-A/AP/89

11/02

Luminosity As Calculated From Machine Parmeters  [PDF]
W. MacKay

C-A/AP/90

11/02

Neutralization Circuit of 28 MHz RHIC Amplifier [PDF]
J. Keane, S. Zheng

C-A/AP/91

12/02

Determination of the AGS Injection Kicker Strength from Beam Measurements [PDF]
L.A. Ahrens and C.J. Gardner

C-A/AP/92

12/02

Notes on the Acceleration of Iron Ions for the Booster Applications Facility [PDF]
C. J. Gardner

C-A/AP/93

02/03

Analysis of AGS Polarimeter Data at = 7.5 [PDF]
H. Huang, R.V. Cadman, H.M. Spinka and D.G. Underwood

C-A/AP/94

02/03

Luminosity Increase at the Incoherent Beam-Beam Limit in RHIC [PDF]
W. Fischer and M.Blaskiewicz

C-A/AP/95

03/03

The Start-to-End Simulation of Electron Beam in the RHIC E-cooling Facility (L-band option) with PARMELA [PDF]
D. Wang, I. Ben-Zvi, X. Chang and J. Kewisch

C-A/AP/96

05/03

Programming the New Sextupole Strings in Booster [PDF]
C. J. Gardner

C-A/AP/97

05/03

Modeling and Simulation of the Power Amplifier for the RHIC 28 MHz Accelerating Cavity [PDF]
S. Zheng and John Keane

C-A/AP/98

06/03

Robust linear coupling correction with N-turn maps [PDF]
W. Fischer

C-A/AP/99

06/03

NEG Coating at RHIC [PDF]
S.Y.  Zhang, H. C. Hseuh and T. Roser

C-A/AP/100

06/03

Spin Tracking in RHIC with one Full Snake and one Partial Snake.  Effect of Orbit Harmonics [PDF]
A. U. Luccio

C-A/AP/101

07/03

Some Useful Linear Coupling Approximations [PDF]
C. J. Gardner

C-A/AP/102

06/03

 Parallel Ion Energy Spread Due to Interaction With an Electron Bunch in the RHIC Electron Beam Cooling Solenoid [PDF]
A. Hershcovitch

C-A/AP/103

07/03

Beam-optic design considerations for a single-hit microbeam facility for the NASA Space Radiation Laboratory (NSRL) at BNL [PDF]
P. Theiberger

C-A/AP/104

08/03

Kicker Pulse Width Requirements for the Injection of Gold Ions into AGS [PDF]
C. J. Gardner

C-A/AP/105

08/03

Beam Based Polarity Check of the Booster Sextupole Strings [PDF]
C.J. Gardner

C-A/AP/106

09/03

Computer Aided Design of Stub Tuners for Impedance Matching [PDF]
S. Zheng and J. M. Brennan

C-A/AP/107

09/03

Experiment Background in RHIC Deuteron-Gold Run [PDF]
S.Y. Zhang

C-A/AP/108

09/03

Analysis of Polarimeter Data for the 2001-2002 RHIC Run [PDF]
H. Spinka, et al

C-A/AP/109

09/03

Dependence of the Production Yields of Positron Emitters in Proton Therapy on the Cross Section Data Variations [PDF]
J. Beebe-Wang, S. Peggs, L. Smith

C-A/AP/110

09/03

Linear and Non Linear Studies at RHIC Interaction Regions and Optical Design of the Rapid Cycling Medical Synchrotron [PDF] [PS]
J. F. Cardona

C-A/AP/111

09/03

Study of Higher Order Modes in High Current Multicell SRF Cavities [PDF]
R. Calaga, et. al.

C-A/AP/112

09/03

Comments on the Operation of the RHIC CNI Polarimeters [PDF]
H. Spinka

C-A/AP/113

09/03

Identification and Correction of the Skew Sextupole Error in the AGS [PDF]
E. Hutchinson, J. W. Glenn

C-A/AP/114

10/03

Booster Fault Study No. 16:  Deuteron Beam on the B6 Dump [PDF]
L. A. Ahrens, K.A. Brown, C. J. Gardner

C-A/AP/115

10/03

Booster Fault Study No. 17:  Proton Beam on the D6 Septum Magnet [PDF]
K.A. Brown, C. J. Gardner

C-A/AP/116

10/03

Stabilization of the Plate Current in Vacuum Tube Power Amplifier Using Cathode Resistor [PDF]
S. Zheng, J. Keane, M. Meth, R. Spitz, A. Zaltsman

C-A/AP/117

10/03

Gain-Bandwith Product of Power Grid Tubes and Application to AGS Power Amplifier Driver [PDF]
M. Meth, A. Zaltsman

C-A/AP/118

10/03

Bunch Patterns and Pressure Rise in RHIC [PDF]
W. Fischer and U. Iriso-Ariz

C-A/AP/119

10/03

FY03 Polarized Proton Ramp Optics Analysis [PDF]
J. van Zeijts

C-A/AP/120

11/03

Dose/Sensitivity in Proton Computer Tomography [PDF]
T. Satogata, H.F.-W. Sadrozinski, A. Dilmanian, S. Peggs, A. Ruggiero

C-A/AP/121

11/03

Fundamental Limits to Stereotactic Proton Therapy [PDF]
S. Peggs

C-A/AP/122

11/03

Simulation of Proton Therapy Treatment Verification via PET imaging of Induced Positron-Emitters [PDF]
J. Beebe-Wang, P. Vaska, F.A. Dilmanian, S. G. Peggs, and D.J. Schlyer

C-A/AP/123

11/03

Beam Scrubbing for RHIC Polarized Proton Operation [PDF]
S.Y. Zhang, W. Fischer, H. Huang and T. Roser

C-A/AP/124

11/03

Analysis from Beam Studies with BTA Stripping Foils [PDF]
G. Marr, L. Ahrens, P. Thieberger, K. Zeno

C-A/AP/125

12/03

Rigidity Magnetic Field, and Inflector Voltage Based on Frequency Measurements in Booster [PDF]
C.J. Gardner

C-A/AP/126

12/03

Eigenvalues of the One-Turn Matrix [PDF]
A. U. Luccio and N. L. D’Imperio

C-A/AP/127

12/03

Vector Potential for a Single Helical Current Conductor [PDF]
T. Tominaka

C-A/AP/128

12/03

Cold AGS Snake Optimization by Modeling     [PDF]
A.U. Luccio, R. Gupta, W.W. MacKay, T. Roser

C-A/AP/129

10/03

Electron Cloud Observations at RHIC in Run-3 (2002/03) [PDF]
U. Iriso, et al

C-A/AP/130

01/04

Plasma Micro-Stability Analysis for the RHIC Electron Beam Cooler [PDF]
A. Hershcovitch

C-A/AP/131

01/04

Longitudinal Stochastic Cooling Power Requirements:  A Coasting-Beam Approach [PDF]
J. Wei, M. Blaskiewicz, M. Brennan

C-A/AP/132

01/04

Beam Profile Measurements and PIN Diode Calibration Using the RHIC Collimators [PDF]
R. Fliller III & A. Drees

C-A/AP/133

01/04

Design of an Interaction Region for the Linac-Ring Version of the Electron-Ion Collider ERHIC [PDF]
C. Montag, J. Kewisch, I. Ben-Zvi

C-A/AP/134

02/04

Calculations of the Focusing Properties of a 7% Partical Snake Helical Magnet with Variable Helicity [PDF]
N. Tsoupas, et al

C-A/AP/135

02/04

A method to measure the focusing properties (R. Matrix) of a magnet [PDF]
N. Touspas, et al

C-A/AP/136

01/04

Tracking through a Warm Helical Snake for the AGS [PDF]
Alfredo U. Luccio

C-A/AP/137

02/04

Reserved

C-A/AP/138

02/04

1.5-GeV FFAG Accelerator for the AGS Facility [PDF]

A.G. Ruggiero, M. Blaskiewicz, E. Courant, D. Trbojevic, N. Tsoupas, W. Zhang

C-A/AP/139

02/04

eRHIC Pressure Rise and Electron Cloud [PDF]
S.Y. Zhang

C-A/AP/140

03/04

Path Length through Helical Snakes and Rotators [PDF]
W. MacKay

C-A/AP/141

03/04

Concepts for CAPACITIVELY RF – SHIELDED BELLOWS in cryogenic structures [PDF]
Y. Zhao, H. Hahn

C-A/AP/142

03/04

eRHIC Zeroth – Order Design Report [PDF]
Editors:  M. Farkhondeh (MIT- Bates) and V. Ptitsyn (BNL)

C-A/AP/143

03/04

Hadron Beam Emittance Growth Due to Electron Beam Parameter Jitter in Linac-Ring Electron-Ion Colliders [PDF] [PS]
C. Montag

C-A/AP/144

08/05

Results for intrabeam scattering growth rates for a bi-gaussian distribution  [PDF]
G. Parzen

C-A/AP/145

03/04

Transverse coupling impedance of the AGS A5 Injection Kicker Magnet [PDF]
H. Hahn and W. Zhang

C-A/AP/146

03/04

Observations on background in PHOBOS and related electron cloud simulations [PDF]
G. Rumolo, GSI; W. Fischer, BNL

C-A/AP/147

04/04

Electron Cloud Phase Transitions [PDF]
U. Iriso, S. Peggs

C-A/AP/148

04/04

Cancellation of the Chromatic Effects with proper Field Profile [PDF]
A. Ruggiero

C-A/AP/149

04/04

Secondary Emission Enhanced Photoinjector [PDF]
I. Ben-Zvi,  X. Chang, P. D. Johnson, J. Kewisch, T. S. Rao

C-A/AP/150

04/04

A reformulation of intrabeam scattering theory [PDF]
G. Parzen

C-A/AP/151

04/04

Review of Options for the SCL for the AGS Upgrade [PDF]
A. G. Ruggiero

C-A/AP/152

05/04

Quadrupole First RHIC Interaction Regions [PDF]
S. Tepikian and S. Peggs

C-A/AP/153

06/04

Use of maps in the exploration of electron cloud parameter space  [PDF]
U. Iriso and S. Peggs

C-A/AP/154

07/04

Uniform Beam Distributions at the Target of the NSRL Beam Transfer Line    [PDF]
N. Tsoupas, S. Bellavia, R. Bonati, K. Brown, I-Hung Chiang, C.J. Gardner, D. Gassner, S. Jao, I. Marneris, A. McNerney, D. Phillips, P. Pile, R. Prigl, A. Rusek, L. Snydstrup

C-A/AP/155

06/04

Beam-Beam Studies For The Electron-Ion Collider ERHIC  [PDF]
C. Montag

C-A/AP/156

06/04

Design of an Interaction Region for the Electron-Ion Collider ERHIC   [PDF]
C. Montag, B. Parker, S. Tepikian, D. Wang (MIT-Bates)

C-A/AP/157

06/04

Feasibility Study of a 1.5-GeV Proton FFAG in the AGS Tunnel   [PDF]
A. Ruggiero

C-A/AP/158

07/04

Skew Quadrupole Modulation to Measure Global Betatron Coupling    [PDF]
Y. Luo, P. Cameron, R. Lee, A. Marusic, F. Pilat, D. Trbojevic, T. Roser, J. Wei

C-A/AP/159

07/04

AGS Sextupole Error Part II      [PDF]
Libby Hutchinson, Woody Glenn

C-A/AP/160

08/04

Comparison of Off-line IR Bump and Action-Angle Kick Minimization   [PDF]
Y. Luo, F. Pilat, V. Ptitsyn, D. Trbojevic, J. Wei

C-A/AP/161

08/04

HOM Coupler Measurement and Simulation           [PDF]
Yongxiang Zhao, Harald Hahn

C-A/AP/162

08/04

Principle of Global Decoupling on the Ramp    [PDF]
Y. Luo, F. Pilat, D. Trbojevic, T. Roser, J. Wei

C-A/AP/163

08/04

3rd order resonance at RHIC injection     [PDF]
R. Tomás

C-A/AP/164

09/04

Notes on Orbit Equations in the AGS     [PDF]
C.J. Gardner

C-A/AP/165

09/04

Linear Coupling Parameterization in the betatron phase rotation frame   [PDF]
Y. Luo

C-A/AP/166

09/04

SixTrack Running Environment in Godzilla      [PDF]
R. Tomás

C-A/AP/167

09/04

Matching the Cold AGS Snake to the AGS Lattice     [PDF]
A. Luccio, T. Roser

C-A/AP/168

09/04

Comments on Simplified Treatment of Intrabeam Scattering    [PDF]
A.V. Fedotov

C-A/AP/169

07/05

Intrabeam scattering growth rates for a bi-gaussian distribution     [PDF]
G. Parzen

C-A/AP/170

09/04

The Crystal Collimation System of the Relativistic Heavy Ion Collider      [PDF]
Raymond P. Fliller III

C-A/AP/171

09/04

Results From The RHIC PC CNI Polarimeter for 2003          [PDF]
O.Jinnouchi, et al

C-A/AP/172

09/04

Design of an Interaction Region for the Electron-Light Ion Collider ELIC    [PDF]
Christoph Montag

C-A/AP/173

12/04

Electron cloud driven vacuum instability         [PDF]
Wolfram Fischer, Ubaldo Iriso-Ariz, and E. Mustafin

C-A/AP/174

10/04

Possible phase loop for the global betatron decoupling          [PDF]
Y. Luo, P. Cameron, S. Peggs, D. Trbojevic

C-A/AP/175

10/04

AGS Main Magnets Moved and BPM Survey – Summer 2003     [PDF]
C. Spataro, L. Ahrens, M. Harvey, T. Mroczkowski, and F.X. Karl

C-A/AP/176

10/04

Simulations of Bunch Merging in Booster     [PDF]
C.J. Gardner

C-A/AP/177

10/04

The Effect of the Booster Injection Foil on Emittance    [PDF]
K. Zeno

C-A/AP/178

11/04

Interpretation of desorption measurements for high energy beams at RHIC   [PDF]

U. Iriso, P. He, H.C. Hseuh, H. Huang, V. Ptitsyn, L. Smart, P. Thieberger, D. Trbojevic

And S.Y. Zhang, E. Mustafin and G. Rumolo

C-A/AP/179

11/04

Vertical Bump Effect at PHOBOS in Run-4      [PDF]

S.Y. Zhang

C-A/AP/180

12/04

Comparison of intrabeam scattering results for a RHIC lattice and a FODO approximation including coupling effects      [PDF]

George Parzen

C-A/AP/181

12/04

Physics of Super Pulses in Storage Ring Free-Electron Lasers    [PDF]

Vladimir N. Litvinenko

C-A/AP/182

12/04

Ion Desorption at RHIC     [PDF]

S.Y. Zhang

C-A/AP/183

12/04

Real and Modeled Effect of Booster Extraction Equipment on Dispersion      [PDF]

V. Schoefer, L. Ahrens, K. Brown

C-A/AP/184

12/04

Transition Pressure Rise in RHIC Run-4      [PDF]

W. Fischer and U. Iriso

C-A/AP/185

02/05

Estimate of Cu-Cu Run Experimental Background at Phobos     [PDF]

S.Y. Zhang

C-A/AP/186

01/05

The Beam_Optics at the Extraction Region of SNS ring; Revisited    [PDF]

N. Tsoupas, M. Hemmer, Y.Y. Lee, C.-I. Pai, J. Rank, J.L. Mi, D. Raparia, S. Tepikian, J.E. Tuozzolo, J. Wei, W. Zhang

C-A/AP/187

01/05

Matrix Perturbation Approach to the Weak Linear Coupling         [PDF]

Y. Luo

C-A/AP/188

01/05

IP Optics Measurement in the Coupled Situation        [PDF]

Y. Luo and D. Trbojevic

C-A/AP/189

04/05

Longitudinal Stochastic Cooling Update, FY05     [PDF]

M. Blaskiewicz

C-A/AP/190

01/05

RHIC Run-away Type Pressure Rise     [PDF]

S.Y. Zhang

C-A/AP/191

03/05

Electron induced molecular desorption of the RHIC beam pipes    [PDF]

U. Iriso and W. Fischer

C-A/AP/192

02/05

Modeling Injection Trajectories on the Midplane of the C5 Dipole in Booster    [PDF]

C.J. Gardner

C-A/AP/193

03/05

Possible NSRL Beams Compatible with Gold-Gold Collisions in RHIC   [PDF]

P. Thieberger

C-A/AP/194

03/05

RHIC abort thyratrons with new trigger modules   [PDF]

H. Hahn, Y. Tan, D. Warburton

C-A/AP/195

03/05

Design and Test of a Prototype Cavity for a Stern-Gerlach Polarimeter   [PDF]        

P. Cameron, M. Conte, N. D’Imperio, W. Franklin, D.A. Goldberg, A. Luccio, W.W. MacKay, M. Palazzi, M. Pusterla, K. Vetter, T. Zwart

C-A/AP/196

03/05

IR Optics Measurement Under Single Eigen Mode Activating       [PDF]

Y. Luo

C-A/AP/197

04/05

Maps, electron-clouds in RHIC and first-order phase-transitions   [PDF]

P. Thieberger, U. Iriso and S. Peggs

C-A/AP/198

04/05

Observations Related to Beam Transition Pressure Rise      [PDF]

S.Y. Zhang

C-A/AP/199

04/05

Modeling Injection Trajectories from the H-Minus Stripping Foil through the C7 Dipole in Booster                  [PDF]

C.J. Gardner

C-A/AP/200

04/05

MECO Operation Compared:  One and Two Bunches on an Aluminum and Two Bunches on a Titanium Conversion Target      [PDF]

J.W. Glenn

C-A/AP/201

05/05

Numerical Simulation on Nitrogen Migration and ODH in RHIC Tunnel    [PDF]

L. Jia

C-A/AP/202

05/05

Beam-Based Non-Linear Optics Corrections    [PDF]

F. Pilat, Y. Luo, N. Malitsky, V. Ptitsyn

C-A/AP/203

08/05

Differential Current Measurement in the BNL Energy Recovery Linac Test Facility   [PDF]

P. Cameron

C-A/AP/204

05/05

Towards a Robust Phase Locked Loop Tune Feedback System    [PDF]

R. Jones, P. Cameron, Y. Luo

C-A/AP/205

05/05

Global Decoupling on the RHIC Ramp    [PDF]

Y. Luo, P. Cameron, A. DellaPenna, W. Fischer, J. Laster, A. Marusic, F. Pilat, T. Roser, D. Trbojevic

C-A/AP/206

05/05

Bunch Profiles in RHIC from CNI Polarimeter Target Scans   [PDF]

H. Spinka (Argonne National Laboratory)

C-A/AP/207

05/05

JLab SRF Institute (SRFI) Trip 8/31/04 – 9/1/04: Final Report     [PDF]

R. Calaga, G. McIntyre

C-A/AP/208

08/05

Revision of the Adjusted Field Profile Estimate Criterion   [PDF]

A. Ruggiero

C-A/AP/209

5/12

Analysis of AGS E880 Polarimeter Data at Gγ = 12.5    [PDF]

R.V. Cadman (ANL), H.Huang (BNL), K.Krueger (ANL), H.Spinka (ANL), D.Underwood (ANL)

C-A/AP/210

06/05

Dynamic Compensation of the Solid-State Driver for the 197 MHz Power Amplifier in RHIC [PDF]

S. Zheng, R. Spitz

C-A/AP/211

06/05

Maps for Coupled Electron and Ion Clouds in Accelerators   [PDF]

U. Iriso, S. Peggs

C-A/AP/212

07/05

Summary of the RHIC Retreat 2005    [PDF]

F. Pilat, W. Fischer, P. Ingrassia, V. Ptitsyn, T. Roser, T. Satogata

C-A/AP/213

07/05

Using the BIG program to compute IBS growth rates for a bi-gaussian beam   [PDF]

George Parzen

C-A/AP/214

07/05

Simulation Calculations and Analytical Predictions of Eigenmode Projection Parameters    [PDF]

Y. Luo

C-A/AP/215

08/05

Thoughts on Healy’s Symplectification Algorithm   [PDF]

Waldo MacKay

C-A/AP/216

09/05

Transverse beam size matrices and beam emittances for linearly coupled optics  [PDF]

Yun Luo

C-A/AP/217

09/05

AGS Injection with an Additional Kicker in the A10 Straight Section  [PDF]

C. J. Gardner

C-A/AP/218

09/05

CW Mode of Operation of a Proton FFAG Accelerator   [PDF]

A. Ruggiero

C-A/AP/219

10/05

FFAG Accelerator Proton Driver for Neutrino Factory  [PDF]

A. Ruggiero

C-A/AP/220

10/05

NEG Coating Application at RHIC   [PDF]

S.Y. Zhang, H.C. Hseuh, W. Fischer, H. Huang, T. Roser

C-A/AP/221

10/05

An Empirical Model for the Response of BtA Multiwires to Different Ions  [PDF]

K. Zeno

C-A/AP/222

10/05

SIMBAD User’s Manual. Version v.1.36  [PDF]

A. Luccio, N.L. D’Imperio

C-A/AP/223

11/05

Plasma Lens for Super Neutrino Beam at BNL and Other Applications   [PDF]

A. Hershcovitch

C-A/AP/224

11/05

Analysis and Design of Cold Helium Gas Warm Up for the 2K Experiment  [PDF]

Ahmed Sidi-Yekhlef, Olive Stohlman, John Krupczak Jr.

C-A/AP/225

12/05

Proposed system for measuring the vertical cold-mass motions in the RHIC cryogenic quadrupoles      [PDF]

P. Thieberger, W.W. Mackay, V.I. Ptitsyn, D. Trbojevic

C-A/AP/226

05/06

Ions in a Rapid Cycling Medical Synchrotron  [PDF]

T. Satogata, E. Beebe, S. Peggs

C-A/AP/227

02/06

Comparison of the present and planned operation of the SIS18 and the AGS Booster with intermediate charge state heavy ions  [PDF]

A. Smolyakov (ITEP), W. Fischer (BNL), C. Omet (GSI), P. Spiller (GSI)

C-A/AP/228

02/06

Electron Clouds in the Relativistic Heavy Ion Collider  [PDF]

Ubaldo Iriso Ariz (University of Barcelona)

C-A/AP/229

02/06

Fast Extraction from the Booster to R Line using Two Kicks from the F3 Kicker   [PDF]

K. Zeno

C-A/AP/230

03/06

Simple Estimates of Collisional Excitation Cross Sections  [PDF]

M. Blaskiewicz

C-A/AP/231

03/06

Warm Calibration Measurements of the 1.3 GHz Electron Gun    [PDF]

H. Hahn

C-A/AP/232

08/06

Results for electron cooling rates using electron cooling as an intrabeam scattering process   [PDF]

George Parzen

C-A/AP/233

04/06

Pressure Rise in Run6 and Related Issues  [PDF]

S.Y. Zhang, H.C. Hseuh, C. Montag, V. Ptitsyn, D. Trbojevic

C-A/AP/234

04/06

AGS CNI Polarimeter Data Analysis for the 2005 Run   [PDF]

J. Wood, I. Alekseev, A. Bravar, G. Bunce, S. Dhawan, R. Gill, H. Huang, W. Lozowski, Y. Makdisi, I. Nakagawa, S. Rescia, T. Roser, D. Svirida, K. Yip, and A. Zelenski

C-A/AP/235

04/06

Beam loss and emittance growth of colliding proton beams during RHIC Run-5  [PDF]

W. Fischer, M. Bai, M. Harvey

C-A/AP/236

04/06

Measurement of the long-range beam-beam effect at injection, and design for a compensator in RHIC  [PDF]

W. Fischer, R. Alforque, H.C. Hseuh, R. Lambiase, C.J. Liaw, G. Miglionico, T. Russo, BNL. J.-P. Koutchouk, F. Zimmermann, CERN. T. Sen, FNAL

C-A/AP/237

05/06

RF Acceleration with Harmonic-Number Jump   [PDF]

A. G. Ruggiero

C-A/AP/238

05/06

AGS-less RIA with FFAG Accelerators    [PDF]

A. G. Ruggiero

C-A/AP/239

06/06

RF Considerations for the dEDM Ring    [PDF]

M. Blaskiewicz

C-A/AP/240

06/06

Notes on the Injection of EBIS Ions into Booster   [PDF]

C.J. Gardner

C-A/AP/241

06/06

Beam Evolution with Time in Electron Cooling and in Intrabeam Scattering  [PDF]

George Parzen

C-A/AP/242

06/06

Analysis of FY 2005 System Operational Failures  [PDF]

Robert Michnoff, Heather Turbush

C-A/AP/243

08/06

Theory of electron cooling using electron cooling as an intrabeam scattering process   [PDF]

George Parzen

C-A/AP/244

07/06

Pepper Pot Emittance Meter   [PDF]

A. Pikin, A. Kponou, J. Ritter, V. Zajic

C-A/AP/245

07/06

Electron Gun for RHIC EBIS   [PDF]

A. Pikin

C-A/AP/246

07/06

Optical, Thermal and Stress Simulations of a 300-kwatt Electron Collector   [PDF]  

A. Pikin, A. Kponou, L. Snydstrup

C-A/AP/247

07/06

Advances with the RHIC Proton-Carbon Polarimeters for the 2006 Run  [PDF]

J. Wood, I. Alekseev, A. Bravar, G. Bunce, S. Dhawan, R. Gill, H. Huang, O. Jinnouchi, W. Lozowski, W. W. MacKay, Y. Makdisi, I. Nakagawa, D. Svirida, K. Yip, A. Zelenski

C-A/AP/248

08/06

Focusing of the AGS Cold Snake    [PDF]

A. Luccio, N. Malitsky, N. Tsoupas

C-A/AP/249

08/06

Summary of the RHIC Retreat 2006   [PDF]

F. Pilat, M. Bai, A. Drees, W. Fischer, C. Montag, P. Ingrassia, R. Michnoff, T. Satogata

C-A/AP/250

08/06

Aperture and vacuum aspects of the PHENIX and STAR detector upgrade beampipe  [PDF]

C. Montag, H.C. Hseuh, W. Fischer

C-A/AP/251

08/06

NSRL Energy Loss Calculator  [PDF]

B. VanKuik, C. Gardner, S. Bellavia, A. Rusek, K. Brown

C-A/AP/252

08/06

A Test of the Refurbished “Jump” Targets in the AGS   [PDF]

Leif Ahrens, David Gassner

C-A/AP/253

09/06

Observations of Direct Excitation of the Betatron Spectrum by Mains Harmonics in RHIC  [PDF]

P. Cameron, M. Gasior & R. Jones (CERN), C-Y. Tang (FNAL)

C-A/AP/254

09/06

Simultaneous Tune and Coupling Feedback in RHIC, and Possible Implications for LHC Commissioning  [PDF]

P. Cameron, A. DellaPenna, L. Hoff, Y. Luo, A. Marusic, C. Shultheiss, S. Tepikian, M. Gasior & R. Jones (CERN), C.Y. Tan (FNAL)

C-A/AP/255

09/06

RHIC Beam-Based Sextupole Polarity Verification   [PDF]

Y. Luo, T. Satogata, P. Cameron, A. DellaPenna, D. Trbojevic

C-A/AP/256

09/06

Continuously Measure Global Difference Coupling using a Phase-Locked-Loop Tune Meter in the RHIC    [PDF]

Y. Luo, P. Cameron, A. DellaPenna, H. Lawrence, A. Marusic, S. Peggs, C. Schultheiss, (BNL), R. Jones (CERN)

C-A/AP/257

11/06

Proton Beam Emittance Growth in Run5 and Run6      [PDF]

S.Y. Zhang, V. Ptitsyn

C-A/AP/258

11/06

Observation of Experimental Background in Proton Run5 and Run6   [PDF]

S.Y. Zhang, D. Trbojevic

C-A/AP/259

11/06

Thermal Analysis for Arc Flash Resistor and Enclosure   [PDF]

V. Badea, S. Bellavia

C-A/AP/260

11/06

How to Use CSEC    [PDF]

M. Blaskiewicz, U. Iriso

C-A/AP/261

11/06

Theory of the friction force using electron cooling as an intrabeam scattering process    [PDF]

George Parzen

C-A/AP/262

11/06

Physics guide of BETACOOL code Version 1.1    [PDF]

A. Fedotov (BNL), I. Meshkov, A. Sidorin, A. Smirnov, G. Trubnikov (JINR, Dubna Russia)

C-A/AP/263

01/07

Online Nonlinear Chromaticity Correction Using Off-Momentum Tune Response Matrix  [PDF]

Y. Luo, W. Fischer, S. Tepikian, D. Trbojevic

C-A/AP/264

01/07

Simulation of Proposed On-Line Third Order Resonance Correction Schemes  [PDF]

Y. Luo, J. Bengtsson, W. Fischer, D. Trbojevic

C-A/AP/265

01/07

Simulation of 3Qx Resonance Driving Term Measurement with AC Dipole Excitation  [PDF]

Y. Luo, M. Bai, J. Bengtsson, W. Fischer, D. Trbojevic

C-A/AP/266

01/07

Internal Cost Review of the RHIC II Project   [PDF]

M. Harrison, E. Johnson, A. McNerney, T. Roser

C-A/AP/267

02/07

Simulations of RHIC Orbit Response Analysis using LOCO  [PDF]

T. Satogata, J. Niedziela

C-A/AP/268

02/07

RHIC Run 7 Feedback Ramp Tunes     [PDF]

P. Cameron

C-A/AP/269

02/07

Ferrite Lined Pillbox Cavity   [PDF]

H. Hahn, A. Blednykh, L. Hammons, D. Kayran, and J. Rose

C-A/AP/270

03/07

Tracking Simulation of J-PARC Slow Extraction   [PDF]

K.A. Brown

C-A/AP/271

04/07

Dynamic Aperture evaluation at the current working point for RHIC polarized proton run [PDF]

Y. Luo, M. Bai, J. Beebe-Wang, R. Calaga, W. Fischer, C. Montag, S. Tepikian, D. Trbojevic

C-A/AP/272

04/07

Optical simulations of the ion beam emittance growth in different types of a gridded lens  [PDF]

A. Pikin

C-A/AP/273

04/07

Damping vs. Clamping to Mitigate the RHIC Triplet Oscillations   [PDF]

P. Thieberger, R. Bonati, C. Montag, D. Trbojevic

C-A/AP/274

04/07

(DRAFT) ANALYSIS NOTE, Absolute Polarization Determination at RHIC in 2005  [PDF]

K.O. Eyser, I. Alekseev, A. Bazilevsky, A. Bravar, G. Bunce, S. Dhawan, R. Gill, W. Haeberli, H. Huang, Y. Makdisi, I. Nakagawa, A. Nass, H. Okada, E. Stephenson, D.N. Svirida, T. Wise, J. Wood, A. Zelenski

C-A/AP/275

07/08

Run05 Proton Beam Polarization Measurements by pC-Polarimeter (ver. 1.1)   [PDF]

I. Nakagawa, I. Alekseev, A. Bazilevsky, A. Bravar, G. Bunce, S. Dhawan, K.O. Eyser, R. Gill, W. Haeberli, H. Huang, Y. Makdisi, A. Nass, H. Okada, E. Stephenson, D.N. Svirida, T. Wise, J. Wood, K. Yip, A. Zelenski

C-A/AP/276

05/07

Modeling RHIC Linear Chromaticity with Sextupole Components in the Arc Main Dipoles  [PDF]

Y. Luo, A. Jain, W. Fischer, S. Tepikian, D. Trbojevic

C-A/AP/277

06/07

A Diagnostic for Improving Transmission through Transition in RHIC  [PDF]

P. Cameron

C-A/AP/278

05/07

Beam Studies on the AGS Polarized Proton 2006 Extraction Porch – Part 1    [PDF]

L. Ahrens

C-A/AP/279

07/07

FFAG-based Accelerator for Radio-Isotopes Production  [PDF]

A.G. Ruggiero, J. Alessi, E. Beebe, A. Pikin, T. Roser, D. Trbojevic

C-A/AP/280

06/07

Letter to Mario Conte, Pete Cameron, and Chris Tschalaer regarding the Stern-Gerlach Force  [PDF]

W. MacKay

C-A/AP/281

06/07

Thermal Analysis of 480 volt Disconnect Switches Feeding Thyristor Control Power Supplies  [PDF]

I. Marneris, V. Badea, R. Bonati, J. Sandberg

C-A/AP/282

07/07

Study of Orbits Produced by Individual Booster Extraction Bump Windings for the NASA Space Radiation Laboratory   [PDF]

L. Hammons, L. Ahrens, K. Brown

C-A/AP/283

08/07

Spink User’s Manual. Version v.2-21-beta   [PDF]

A. U. Luccio

C-A/AP/284

08/07

Emittance growth with offset beam-beam collisions and small beam-beam parameters [PDF]

N.P. Abreu, W. Fischer

C-A/AP/285

08/08

Summary of the RHIC Retreat 2007   [PDF]

F. Pilat, C. Gardner, C. Montag, T. Roser

C-A/AP/286

12/07

Outline of using an electron lens for the RHIC head-on beam-beam compensation ( v 0.1)  [PDF]     Revised [PDF]

Y. Luo, W. Fischer

C-A/AP/287

08/07

Measurement and Correction of Horizontal Third Order Resonance Driving Term in the RHIC run 06*  [PDF]

Y. Luo, M. Bai, R. Calaga, J. Bengtsson, W. Fischer, N. Malitsky, F. Pilat, T. Satogata

C-A/AP/288

08/07

AGS BPM Tests  [PDF]

P. Menga, L. Ahrens, R. Schroeder

C-A/AP/289

09/07

Application of Saturated NEG at Interaction Regions    [PDF]

S.Y. Zhang

C-A/AP/290

09/07

Free Electron Lasers and High-Energy Electron Cooling   [PDF]

V. Litvinenko, Y. Derbenev

C-A/AP/291

10/07

Summary of the LARP Mini-Workshop on Beam-Beam Compensation 2007  [PDF]

W. Fischer, O. Brüning, J.-P. Koutchouk, F. Zimmermann, T. Sen, V. Shiltsev, K. Ohmi, M. Furman, Y. Cai, A. Chao

C-A/AP/292

01/08

Revised Spin Motion Equations   [PDF]      Spin Motion and Resonances in Accelerators and Storage Rings  [PDF]

E.D. Courant

C-A/AP/293

10/07

Rest Mass of Fully Stripped Ions in RHIC: Updated Values   [PDF]

K.A. Brown, C. Gardner, P. Thieberger

C-A/AP/294

02/08

Spin rotation formalism for spin tracking     [PDF]   (REVISED)

A.U. Luccio

C-A/AP/295

11/07

Optimized bunch patterns for d-Au in RHIC Run-8    [PDF]

W. Fischer, V. Ptitsyn

C-A/AP/296

11/07

Prospects for Acceleration of Deuterons and Helions    [PDF]

W.W. MacKay

C-A/AP/297

11/07

Gold Beam Transverse Emittance in RHIC  [PDF]

S.Y. Zhang

C-A/AP/298

01/09

Reserved.

C-A/AP/299

12/07

Extracting Undistorted Twiss Parameters from Driven Oscillations   [PDF]

M. Bai

C-A/AP/300

01/08

R_transport_matrices of the Fast Extraction Beam (FEB) of the AGS, and Beam Parameters at the Starting point of the AtR Line    [PDF]

N. Tsoupas, W.W. MacKay, T. Satogata, W. Glenn, L. Ahrens, K. Brown, C. Gardner, Sanki Tanaka, Others?

C-A/AP/301

02/08

Tracking of Acceleration with HNJ Method    [PDF]

A. Ruggiero

C-A/AP/302

02/08

Generalization of the ERIT Principle and Method     [PDF]

A. Ruggiero

C-A/AP/303

04/08

Emittance Reduction between EBIS LINAC and Booster by Electron Beam Cooling; Is Single Pass Cooling Possible?    [PDF]

A. Hershcovitch

C-A/AP/304

04/08

Possible Depolarization Mechanism due to Low Beta Squeeze   [PDF]

V. H. Ranjbar, D. Abell, A. Luccio, M. Bai

C-A/AP/305

04/08

Spin Resonances for Stored Deuteron Beams in COSY. Vector Polarization. Tracking with Spink     [PDF]

A.U. Luccio, A. Lehrach

C-A/AP/306

04/08

BTA Magnet Field Map Archive and MAD Model    [PDF]

J.W. Glenn

C-A/AP/307

04/08

Feasibility of Electron Cooling for Low-Energy RHIC Operation   [PDF]

A. Fedotov, I. Ben-Zvi, X. Chang, D. Kayran, V. Litvinenko, E. Pozdeyev, T. Satogata

C-A/AP/308

05/08

Summary of the Mini BNL/LARP/CARE-HHH workshop on Crab Cavities for the LHC  [PDF]

I. Ben-Zvi, R. Calaga, F. Zimmermann

C-A/AP/309

05/08

RHIC RF Harmonic Numbers For Low Energy Operations   [PDF]

T. Satogata

C-A/AP/310

05/08

Stability of single particle motion with head-on beam-beam compensation in the RHIC [PDF]

Y. Luo, W. Fischer, N. Abreu

C-A/AP/311

05/08

Simple beam-optic simulations and proposed mechanical mitigation for the triplet oscillation problem  [PDF]

P. Thieberger, C. Montag, L. Snydstrup, D. Trbojevic, J. E. Tuozzolo

C-A/AP/312

05/08

Spherical Aberration Corrections for an Electrostatic Gridded Lens   [PDF]

A. Pikin

C-A/AP/313

07/08

Booster-to-AGS Multiwires and an Evolution of the Application “Profile Display”  [PDF]

L. Ahrens

C-A/AP/314

07/08

Summary on the fundamental mode damper experiments of the 56 MHz SRF cavity  [PDF]

E. M. Choi, H. Hahn

C-A/AP/315

07/08

Capacitive fundamental power coupler and pickup for the 56 MHz SRF cavity  [PDF]

E. M. Choi, H. Hahn

C-A/AP/316

07/08

Polarization Issues in Run 2008   [PDF]

S.Y. Zhang, L. Ahrens, H. Huang, K. Zeno

C-A/AP/317

07/08

Part II/Addendum Electron Beam Cooling between EBIS LINAC and Booster; Is Single Pass Cooling Possible?   [PDF]

A. Hershcovitch

C-A/AP/318

08/08

Summary of the RHIC Retreat 2008   [PDF]

F. Pilat, M. Brennan, K. Brown, W. Fischer, C. Montag

C-A/AP/319

08/08

Higher Order Mode Damper Study of the 56 MHz SRF Cavity  [PDF]

E.M. Choi, H. Hahn

C-A/AP/320

01/09

Measurement of HOMs in the RHIC RF Cavities   [PDF]

N. P. Abreu, E. M. Choi

C-A/AP/321

08/08

Higher order model power calculation of the 56 MHz SRF cavity    [PDF]

E.M. Choi

C-A/AP/322

09/08

Cathode Ion Bombardment in RF Photoguns    [PDF]

E. Pozdeyev, D. Kayran, V. Litvinenko

C-A/AP/323

09/08

User Guide for UAL (C++ Interface)    [PDF]

N. Malitsky, R. Talman

C-A/AP/324

09/08

Pattern Recognition: The Importance of Dispersion in Crystal Collimation    [PDF]

S. Shiraishi (Univ. of Chicago), and S. Peggs

C-A/AP/325

09/08

An Algebraic Approach to the Evolution of Emittances upon Crossing the Linear Coupling Difference Resonance   [PDF]

C.J. Gardner

C-A/AP/326

10/08

Beam Transport of 4 GeV Protons from AGS to the “Proton Interrogation Target” of the “Neutrino line” (“Z_line”) and Effect of the Air on the Transported Beam   [PDF]

N. Tsoupas, L. Ahrens, P. Pile, P. Thieberger (BNL), M. M. Murray (LANL)

C-A/AP/327

10/08

NSRL Extraction Bump Control in the Booster   [PDF]

L. Brennan

C-A/AP/328

10/08

Measurements and Studies of Secondary Electron Emission of Diamond Amplified Photocathode    [PDF]

Q. Wu

C-A/AP/329

10/08

Ferrite HOM Absorber for the RHIC ERL    [PDF]

H. Hahn, E.M. Choi, L. Hammons

C-A/AP/330

10/08

A New Luminescence Beam Profile Monitor for Intense Proton and Heavy Ion Beams  [PDF]

T. Tsang, D. Trbojevic, S. Bellavia, R. Connolly, D. Gassner, Y. Makdisi, T. Russo, P. Thieberger, A. Zelenski

C-A/AP/331

09/09

Geometric Optimization of the 56MHz SRF Cavity and its Frequency Table  [PDF]

X. Chang, I. Ben-Zvi

C-A/AP/332

10/08

IBS and Expected Luminosity Performance For RHIC Beams At Top Energy With 56 MHz SRF Cavity  [PDF]

A. Fedotov

C-A/AP/333

10/08

RHIC Performance with 56 MHz RF and Gold Ion Beams Pre-cooled at Lower Energy   [PDF]

A. Fedotov

C-A/AP/334

10/08

Impact on Spin Tune From Horizontal Orbital Angle Between Snakes and Orbital Angle Between Spin Rotators [PDF]

M. Bai, V. Ptitsyn, T. Roser

C-A/AP/335

11/08

“Matching” the BtA line to the bare-AGS (Part 1)    [PDF]

N. Tsoupas, J.W. Glenn, H. Huang, W.W. MacKay, D. Raparia, K. Zeno

C-A/AP/336

11/08

Matrix solution to longitudinal impedance of multi-layer circular structures   [PDF]

H. Hahn

C-A/AP/337

01/09

Superconducting Storage Cavity for RHIC  [PDF]

I. Ben-Zvi

C-A/AP/338

01/09

Effects of Booster Scraping in Polarized Proton Runs 2006 and 2008    [PDF]

S.Y. Zhang, L. Ahrens, H. Huang, K. Zeno

C-A/AP/339

01/09

IBS and Potential Luminosity Improvement for RHIC Operation Below Transition Energy   [PDF]

A. Fedotov

C-A/AP/340

09/09

Energy scaling of spin tune due to RHIC snakes  [PDF]

W. W. MacKay

C-A/AP/341

01/09

Longitudinal Stability Calculations  [PDF]

M. Blaskiewicz

C-A/AP/342

01/09

56 MHZ Cavity Prototype Measurements  [PDF]

H. Hahn, E. Choi

C-A/AP/343

01/09

Multipacting simulation study for 56 MHz Quarter Wave Resonator using 2D code  [PDF]

D. Naik, I. Ben-Zvi

C-A/AP/344

01/09

Cryogenic and Cryostat System for the 56 MHZ SRF Cavity  [PDF]

R. Than

C-A/AP/345

01/09

Simulation of Electron Cloud Density Distributions in RHIC Dipoles at Injection and Transition and Estimates for Scrubbing Times  [PDF]

P. He, M. Blaskiewicz, W. Fischer

C-A/AP/346

01/09

Diffusion Simulation and Lifetime Calculation at RHIC   [PDF]

N. P. Abreu, W. Fischer, Y. Luo, G. Robert-Demolaize

C-A/AP/347

01/09

Stochastic Boundary, Diffusion, Emittance Growth and Lifetime calculation for the RHIC e-lens   [PDF]

N. P. Abreu, W. Fischer, Y. Luo, G. Robert-Demolaize

C-A/AP/348

01/09

Sorting chromatic sextupoles for easily and effectively correcting second order chromaticity in the Relativistic Heavy Ion Collider  [PDF]

Y. Luo, S. Tepikian, W. Fischer, G. Robert-Demolaize, D. Trbojevic

C-A/AP/349

01/09

Dynamic aperture evaluation of the proposed lattices for the RHIC 2009 polarized proton run  [PDF]

Y. Luo, M. Bai, J. Beebe-Wang, W. Fischer, C. Montag, G. Robert-Demolaize, T. Satogata, S. Tepikian, D. Trbojevic

C-A/AP/350

01/09

Buffer Chemical Polishing and RF Testing of the 56 MHz SRF Cavity   [PDF]

A. Burrill

C-A/AP/351

01/09

Effect of various errors on the spin tune and stable spin axis  [PDF]

W. W. MacKay

C-A/AP/352

01/09

Proof-of-principle Experiment of a Ferroelectric Tuner for the 1.3 GHz Cavity  [PDF]

E.M. Choi, H. Hahn, S.V. Shchelkunov, J. Hirshfield, S. Kazakov

C-A/AP/353

03/09

Summary of the LARP Mini-Workshop on Electron Lens Simulations at BNL   [PDF]

A. Valishev (FNAL), Y. Luo, and W. Fischer (BNL)

C-A/AP/354

03/09

Identification of Matrix Conditions that Give Rise to the Linear Coupling Resonances [PDF]

C.J. Gardner

C-A/AP/355

03/09

Run-08 pC polarization analysis  [PDF]

V. Dharmawardance (New Mexico State Univ.), A. Bazilevsky, G. Bunce, R. Gill, H. Huang, Y. Makdisi, I. Nakagawa, B. Morozov, H. Okada, M. Sivertz, A. Zelenski (BNL), I. Alekseev, D. Svirida (Institute of Theoretical and Experimental Physics in Moscow Russia)

C-A/AP/356

03/09

Issues Concerning High Current Low Energy Electron Beams Required for Ion Cooling between EBIS LINAC and Booster   [PDF]

A. Hershcovitch

C-A/AP/357

05/09

Relativistic Stern-Gerlach Interaction in an RF Cavity  [PDF]

M. Conte, A.U. Luccio, M. Pusterla

C-A/AP/358

08/09

Quench propagation in the HOM damper of the 56 MHz cavity   [PDF]

I. Ben-Zvi

C-A/AP/359

02/10

Bunch Length Effects in the Beam-Beam Compensation with an Electron Lens  [PDF]

W. Fischer, Y. Luo, C. Montag

C-A/AP/360

12/09

RHIC Low Energy Beam Loss Projections     [PDF]

T. Satogata

C-A/AP/361

08/09

Luminosity Issues in 2009 100 GeV Polarized Proton Run    [PDF]

S.Y. Zhang

C-A/AP/362

09/09

Measurement and Simulation of the RHIC Abort Kicker Longitudinal Impedance  [PDF]

N.P. Abreu, E. Choi, H. Hahn

C-A/AP/363

12/09

Emittance Growth from Electron Beam Modulation   [PDF]

M. Blaskiewicz

C-A/AP/364

12/09

Compact, Energy EFFICIENT Neutron Source: Enabling Technology for Various Applications   [PDF]

A. Hershcovitch, T. Roser

C-A/AP/365

12/09

RHIC Local Orbit Control and Power Supply Resolution   [PDF]

T. Satogata

C-A/AP/366

08/10

High Precision Tune and Coupling MEasurements and tune/Coupling Feedback in RHIC  [PDF]

M. Minty, A. Curcio. C. Dawson, C. Degen, Y. Luo, G. Marr, B. Martin, A. Marusic, K. Mernick, P. Oddo, T. Russo, V. Schoefer, R. Schroeder, C. Schultheiss, M. Wilinski

C-A/AP/367

01/10

R&D ERL: Laser and Laser Light Transport   [PDF]

Brian Sheehy

C-A/AP/368

01/10

R&D ERL: Vacuum   [PDF]

M. Mapes, L. Smart, D. Weiss, A. Steszyn, R. Todd, M. Mapes

C-A/AP/369

01/10

R&D ERL:  HOM Absorbers    [PDF]

H. Hahn, I. Ben-Zvi, R. Calaga, L. Hammons, V.N. Litvinenko, W. Xu

C-A/AP/370

01/10

R&D ERL: Cryogenic System   [PDF]

R. Than

C-A/AP/371

01/10

R&D ERL: Diagnostics   [PDF]

D. Gassner

C-A/AP/372

01/10

R&D ERL: Machine Protection System    [PDF]

Zeynep Altinbas

C-A/AP/373

01/10

R&D ERL: Power Supplies   [PDF]

R. Lambiase

C-A/AP/374

01/10

R&D ERL: Photocathode Deposition and Transport System   [PDF]

D. Pate, I. Ben-Zvi, T. Rao, A. Burrill, R. Todd, J. Smedley (BNL), D. Holmes (AES)

C-A/AP/375

01/10

R&D ERL: Magnet    [PDF]

G. Mahler

C-A/AP/376

01/10

R&D ERL: 5 Cell 704 MHz SRF Cavity    [PDF]

A. Burrill

C-A/AP/377

01/10

R&D ERL: HTS Solenoid     [PDF]

R. Gupta, J. Muratore, S. Plate

C-A/AP/378

01/10

R&D ERL: Beam Dump  [PDF]

A. Hershcovitch 

C-A/AP/379

01/10

R&D ERL: SRF Electron Gun    [PDF]

A. Burrill

C-A/AP/380

01/10

R&D ERL:  Controls System  [PDF]

L. Hoff, J. Jamilkowski

C-A/AP/381

02/10

R&D ERL:  Low Level RF   [PDF]

K. Smith

C-A/AP/382

02/10

R&D ERL:  High Power RF Systems    [PDF]

A. Zaltsman

C-A/AP/383

02/10

R&D ERL:  Beam Dynamics, Parameters and Physics to be learned    [PDF]

D. Kayran

C-A/AP/384

02/10

R&D ERL:  G5 Test and Commissioning Plan   [PDF]

E. Pozdeyev, D. Kayran

C-A/AP/385

01/10

R&D ERL:  Magnetic Measurement of the ERL Magnets    [PDF]

Animesh Jain

C-A/AP/386

  Reserved for Anyone - ask Anna

C-A/AP/387

01/10

Building the RHIC Tracking Lattice Model   [PDF]

Y. Luo, W. Fischer, S. Tepikian

C-A/AP/388

01/10

Sim Track User’s Manual (v 1.0)   [PDF]

Y. Luo

C-A/AP/389

10/11

Optimizing of the Higher Order Mode Dampers in the 56MHz SRF Cavity  [PDF]

Q.Wu, I. Ben-Zvi

C-A/AP/390

02/10

The AGS with four Helical Magnets  [PDF]

N. Tsoupas, H. Huang, W.W. MacKay, T. Roser and D. Trbojevic

C-A/AP/391

02/10

Acceleration of Polarized Protons in the AGS   [PDF]

N. Tsoupas, L. Ahrens, M. Bai, K. Brown, E. Courant, J.W. Glenn, H. Huang, A. Luccio, W.W. MacKay, T. Roser, V. Schoefer, K. Zeno

C-A/AP/392

08/10

Simulation study of dynamic aperture with head-on beam-beam compensation in the RHIC [PDF]

Y.Luo, W.Fischer

C-A/AP/393

08/10

Dynamic aperture calculation for the RHIC 2010 100 GeV Au-Au run lattices  [PDF]

Y.Luo, K. Brown, W. Fischer, V. Ptitsyn, T. Roser, V. Schoefer, S. Tepikian, D. Trbojevic

C-A/AP/394

08/10

6-D weak-strong beam-beam simulation study of proton lifetime in presence of head-on beam-beam compensation in the RHIC   [PDF]

Y.Luo, W. Fischer

C-A/AP/395

08/10

Coupling effect on the proton optics from the electron lenses  [PDF]

Y.Luo, X. Gu,W. Fischer

C-A/AP/396

08/10

Notes on Dumping Gold Beam in the AGS  [PDF]

C.J. Gardner, L.A. Ahrens, and P. Thieberger

C-A/AP/397

08/10

FY10 Parameters for the Injection, Acceleration, and Extraction of Gold Ions in Booster, AGS, and RHIC  [PDF]

C.J. Gardner

C-A/AP/398

08/10

FY08 Parameters for the Injection, Acceleration, and Extraction of Gold Ions and Deuterons in the Booster, AGS, and RHIC  [PDF]

C.J. Gardner

C-A/AP/399

08/10

Calibration of the ERL cavity FPC and PU Couplers   [PDF]

H. Hahn, E. Johnson, and D. Kayran

C-A/AP/400

08/10

Dynamic Aperature Calculation for 100 GeV Au-Au and 250GeV pp Lattices with Near Third Order Resonance Working Permit   [PDF]

X. Gu, Y. Luo, and W. Fischer

C-A/AP/401

08/10

Run-09 pC Polarimeter Analysis  [PDF]

I. Alekseev, E. Aschenauer, G. Atoyan, A. Bazilevsky, R. Gill, H. Huang, S. Lee, X. Li, Y. Makdisi,

B. Morozov, I. Nakagawa, D. Svirida and A. Zelenski

C-A/AP/402

08/10

On the Future of BNL User Facilities  [PDF]

I. Ben-Zvi

C-A/AP/403

10/11

Beam lifetime and emittance growth in RHIC under normal operating conditions with the hydrogen gas jet, the cluster-jet, and Pellet targets  [PDF]

D. Trbojevic

C-A/AP/404

09/10

Booster and AGS Transverse Emittance During the 2006 and 2009 Polarized Proton Runs  [PDF]

K. Zeno

C-A/AP/405

09/10

Multiturn Injection of EBIS Ions in Booster  [PDF]

C. J. Gardner

C-A/AP/406

09/10

Analytical Tools in Accelerator Physics  [PDF]

V. N. Litvinenko

C-A/AP/407

10/10

Orbit Response Matrix Measurements for 10Hz Global Orbit Feedback in RHIC [PDF]

C. Liu, M. Minty

C-A/AP/409

10/10

RHIC Electron Lens Beam Transport System Design Considerations [PDF]

X. Gu, A. Pikin, M. Okamura, W. Fischer, Y Luo, R. Gupta, J. Hock, A. Jain, D. Raparia

C-A/AP/410

10/10

Measurement of Coupling Resonance Driving Terms with the AC Dipole  [PDF]

Ryoichi Miyamoto

C-A/AP/411

11/10

A Simple Crunching of the AGS "bare" machine ORM Data - February 2007 - to extract some aspects of AGS Transverse Coupling at Injection and Extraction  [PDF]

L. Ahrens

C-A/AP/412

11/10

Emittance Measurements using Vernier Scans During Run 09 (pp at 250 GeV)  [PDF]

A. Drees

C-A/AP/413

12/10

Copper Coating Specification for the RHIC Arcs [PDF]

M. Blaskiewicz

C-A/AP/414

12/10

Creating Intense Polarized Electron Beam via Laser Stripping and Spin-Orbit Interaction [PDF]

V. Danilov, T. Gorlov, V. Ptitsyn

C-A/AP/415

12/10

Burning and Propagation of Flame in Cable Trays at the AGS [PDF]

M. Plotkin

C-A/AP/416

01/11

Single Pass Electron Beam Cooling of Gold Ions Between EBIS LINAC and Booster is Theoretically Possible! [PDF]

A. Hershcovitch

C-A/AP/417

01/11

Gatling Gun:  High Average Polarized Current Injector for eRHIC [PDF]

V. N. Litvinenko

C-A/AP/418

01/11

Source of Second Order Chromaticity in RHIC  [PDF]

Y. Luo, X. Gu, W. Fischer, D. Trbojevic

C-A/AP/419

01/11

Comparison of the Dynamic Apertures in the RHIC 100 GeV and 250 GeV Polarized Proton Runs  [PDF]

Y. Luo, X. Gu, W. Fischer, D. Trbojevic

C-A/AP/420

01/11

Compare 100 GeV/n Au Run 2010 with Run 2007  [PDF]

S. Y. Zhang

C-A/AP/421

01/11

Multipole Error Data Analysis for RHIC Low-Energy Operations  [PDF]

C. Montag

C-A/AP/422

01/11

Energy Upgrade as Regards Quench Performance  [PDF]

W.W. MacKay, S. Tepikian

C-A/AP/423

02/11

The Effects of Realistic Pancake Solenoids on Particle Transport  [PDF]

X. Gu, M. Okamura, A. Pikin, W. Fischer, Y. Luo

C-A/AP/424

02/11

Effect of the Electron Lenses on the RHIC Proton Beam Closed Orbit  [PDF]

X. Gu, Y. Luo, A. Pikin, M. Okamura, W. Fischer, C. Montag, R. Gupta, J. Hock, A. Jain, D. Raparia

C-A/AP/425

11/11

Effects of Liquid Helium Bubble Formation in a Superconducting Cavity Cryogenic System   [PDF]

X. Chang, E. Wang, T. Xin

C-A/AP/426

10/11

The Effects of Phase Advances between Interaction Points   [PDF]

Y.Luo, S.Tepikian, W.Fischer, X.Gu, D.Trbojevic

C-A/AP/427

10/11

Study of Multi-Beam Accelerator Driven Thorium Reactor  [PDF]

H.Ludewig, A.Aronson

C-A/AP/428

07/11

Asymptotic behavior of 1D FEL dispersion integral at large |s|   [PDF]

G.Wang, V.N. Litvinenko, S.Webb

C-A/AP/429

10/11

Higher order mode analysis at the BNL Energy Recovery Linac   [PDF]  

E.C. Johnson, I.Ben-Zvi, H.Hahn, L.Hammons, W.Xu

C-A/AP/430 10/11

Effect of 3D Polarization profiles on polarization measurements and colliding beam experiments   [PDF] 

W.Fischer and A.Bazilevsky

C-A/AP431

11/11

Analysis and correction of vertical dispersion in RHIC   [PDF]

C. Liu, Y. Luo, M. Minty

C-A/AP432

11/11

An optimized hadron therapy installation based on multiple-extraction, ultra-fast cycling FFAG   [PDF]

F. Meot, Y. Mori, E. Brebant, G. Cappai, J. Collot, H. Mammar, C. Mazzara, F. Tricart

C-A/AP/433

11/11

Measurement of groove features and dimensions of the vertical test cathode and the choke joint of the superconducting electron gun cavity of the Energy Recovery LINAC    [PDF]

L. Hammons, M. Ke

C-A/AP/434

11/11

Camera Assembly design proposal for SRF cavity image collection   [PDF]

S. Tuozzolo

C-A/AP/435

11/11

Experience with low-energy gold-gold operations in RHIC during FY 2010   [PDF]

C. Montag, T. Satogata, L. Ahrens, M. Bai, J. Beebe-Wang, I. Blackler, M. Blaskiewicz, J.M. Brennan, K.A. Brown, D. Bruno, J.J. Butler, C. Carlson, R. Connolly, T. D'Ottavio, K.A. Drees, W. Fischer, W. Fu, D.M. Gassner, M. Harvey, T. Hayes, H. Huang, R. L. Hulsart, P.F. Ingrassia, A. Jain, N. A. Kling, M. Lafky, J.S. Laster, R.C. Lee, Y. Luo, W.W. MacKay, M. Mapes, G.J. Marr, A. Marusic, K. Mernick, R.J. Michnoff, M.G. Minty, J. Morris, C. Naylor, S. Nemesure, F.C. Pilat, V. Ptitsyn, G. Robert-Demolaize, T. Roser, P. Sampson, V. Schoefer, C. Schultheiss, F. Severino, T.C. Shrey, K.S. Smith, S. Tepikian, P. Theiberger, D. Trbojevic, N. Tsoupas, J.E. Tuozzolo, M. Wilinski, A. Zaltsman, K. Zeno, S.Y. Zhang

C-A/AP/436

11/11

Injection of large transverse emittance EBIS beams in booster   [PDF]

C.J. Gardner

C-A/AP/437

1/12

Comments on Momentum Aperture of 100 GeV/n Au runs in RHIC    [PDF]

S.Y. Zhang

C-A/AP/438

1/12

A Luminosity Model of RHIC gold runs       [PDF]

S,Y. Zhang

C-A/AP/439 5/12 Re-Visit Local Coupling Correction in the Interaction Regions of RHIC   [PDF]

Y. Luo, W. Fischer, C. Liu, A. Marusic, M. Minty, V. Ptitsyn, V. Schoefer, S. Tepikian, D. Trbojevic, C. Zimmer

C-A/AP/440 5/12 An Orbit fit program for localizing errors in RHIC    [PDF]

C. Liu, M. Minty, V. Ptitsyn

C-A/AP/441

5/12

Analysis of Vernier Scans during the PP2PP run in 2009 (pp at 100 GeV/beam)       [PDF]

A. Drees

C-A/AP/442

5/12

Chromaticity of the lattice and beam stability in energy-recovery linacs     [PDF] 

V. Litvinenko

C-A/AP/444

5/12

High Intensity protons in RHIC     [PDF]

C. Montag, L. Ahrens, M. Blaskiewicz, J.M. Brennan, K. A. Drees, W. Fischer, H. Huang, M. Minty, G. Robert-Demolaize, P. Thieberger, K. Yip

C-A/AP/445

5/12

Towards demonstration of electron cooling with bunched electron beam    [PDF]

A. Fedotov

C-A/AP/447

5/12

DX magnet requirements for p-AU operation    [PDF]

S. Tepikian, D. Trbojevic

C-A/AP/448 5/12 Simulations of RF Capture with Barrier Bucket in Booster at Injections     [PDF]  

C.J. Gardner

     

[Internal-only viewable C-AD notes]]


Maintained by Anna Petway/Tracy Blydenburgh - Last Update: July 26, 2011