Run 11 13.5 GeV Au-Au Start-up Tasks

Basic Schedule (preliminary)

Prior to RHIC beam

Task
Goal
Contact
Status/Time
create latticeevaluate ramp (Au11v6)Bruno, Tepikian, Marusicdone
ramp testingtest and rampBruno, Marusicdone
create orbit matricesmake orbit feedback matrices from latticeRobert-Demolaize, Marusicdone


Start-Up Mode

Task
Goal
Contact
Status/Time
Disable transition itemsremove gamma jump items from tape, elog, etc.MCR, Controls
HysteresisRun new hysteresis cycle, 3 ramps
Re-establish injection check injection, circulating beam, bunched beam and lifetime with new hysteresis
MCR, AP shift <1 shift
Instrumentation Setup
- BPM's
- Tunemeter (Atrus)
- Injection Damper
- Schottky
- BBQ
- BTF
- IPM
- WCM
- BLM
- 10 Hz feedback system
- Coherence monitor
verify operation for injection, ramp, store
System experts
<1 shift
Machine Tuning
- orbit correction
- bend trim/orbit radius
- decoupling
- chromaticity
- optics measurements
optimize injection
MCR, AP shift
<1 shift
BBQ for tune feedback
Ready for 1st ramp!
BBQ crew

drift correctionmeasure and correct for new persistent current curvesMCR, AP shift
Ramp Development1 day
6-12 bunches
low intensity
orbit,tune/coupling feedback
ramp with feedback both rings
orbit, xmean feedback
tune/coupling feedback
MCR, AP shift

RF setup and radial loop
monitor ramp conditions
ring-to-ring synchro
RF group

chromaticity along the ramp
Try chromaticity feedback?
MCR, AP shift
automatic elog entriesadjust scripts and log requests for new rampControls
Store Development1 day

6 - 56 bunches
center beams & set storage frequency
cogging
increase bunch intensity to > 1 x 109
Then increase number of bunches
establish collisions
DX BPM timing
MCR, AP Shift
LLRF
BPM experts
1 shift
Store Optics
Tape sequences?
orbit correction
decoupling
chromaticity
dispersion function measurement and correction
IR nonlinear corrections
tune scans: working point scans
optics measurements (AC dipole)
MCR, AP shift




collimation setup

Drees

gap cleaning

MCR, AP shift, Drees

Slow orbit feedback
SGOF at store
Marusic

10 Hz feedback

Michnoff, Mernick

Store drift correctionevaluate need for persistent current drift at store
run feedback loops during early store, save for replay
MCR, Marusic, AP shift


Ramp Up Mode
Task
Goal
Contact
Status/Time
ramp development with intense beam>1 x 109, >56 bunches; goal to get to 110 bunchesMCR, AP shift
detector backgrounds
optimize and document orbits
improve collimation
MCR, AP shift, Drees

Vernier Scans
prerequisite for physics
Drees