The Relativistic Heavy Ion Collider Run-19/20/21
  LEReC commissioning at 3.85, 4.55 and 5.75 GeV/nucleon, Beam Energy Scan II colliding mode at 3.85, 4.55, 5.75, 7.3 and 9.8 GeV/nucleon, Beam Energy Scan II fixed target mode at 7.3, 9.8 and 31.2 GeV/nucleon
[STAR]   [PHENIX]   [Machine/Detector Planning]   [Scheduling Physicist]   [Accelerator Physics Experiments]

 


E
 GeV/nucleon
 100
 13.5
Lpeak
 1026cm-2s-1

Lavg
 1026cm-2s-1

Lweek
 μb-1/week

[as of 12/11/2017]
Logs
[Elogs]  [AuAu Elog]  [OC Elog]  [Dry Run]
References
[RHIC Runs overview]  [Controls]  [Operations]  [low-energy Gold Parameters ]  [FY16 Parameters]  [Injection into 9 MHz]  [FY14 Parameters]  [AGS Longitudinal Emittance]  [BESII_RHIC]

Mode 1A: LEReC cooling commissiong with 197Au79+ at 3.85 GeV/nucleon

2019 Start-Up Plan

2020 Start-Up Plan

Machine Parameters
No of bunches 1-111
Ions/bunch 0.3-0.6x109
Blue WP
 28.2345 // 29.2292
Yellow WP
 28.2331 // 29.2298
Harmonic number 120
beta* @IP6 6 m, squeezed to 4.5 m

Mode 1B: 197Au79+ on 197Au79+ at 9.8 GeV/nucleon particle energy



Machine Parameters
No of bunches 111
Ions/bunch 1.85x109
Blue WP
 28.0931 // 29.0849
Yellow WP
 28.0891 // 29.0788
Harmonic number 360
beta* @IP6 2 m

  

Mode 1C: 197Au79+ on 197Au79+ at 7.3 GeV/nucleon particle energy



Machine Parameters
No of bunches 111
Ions/bunch 1.75x109
Blue WP
 28.0931 // 29.0849
Yellow WP
 28.0891 // 29.0788
Harmonic number 360
beta* @IP6 3 m

  

Mode 1D: 197Au79+ at 7.3 GeV/nucleon particle energy on fixed target 197Au foil inside STAR (3.93 GeV/nucleon COM energy)



Machine Parameters
No of bunches 12
Ions/bunch 1.4x109
Yellow WP
 28.0891 // 29.0788
Harmonic number 360
beta* @IP6 10.0 m

Mode 1E: 197Au79+ on 197Au79+ at 3.85 GeV/nucleon



Machine Parameters
No of bunches 111
Ions/bunch 0.615x109
Blue WP
 28.2345 // 29.2292
Yellow WP
 28.2331 // 29.2298
Harmonic number 120
beta* @IP6 6 m, squeezed to 4.5 m

Mode 1F: 197Au79+ at 3.85 GeV/nucleon particle energy on fixed target 197Au foil inside STAR (2.5 GeV/nucleon COM energy)



Machine Parameters
No of bunches 12
Ions/bunch 0.73x109
Yellow WP
 28.227 // 29.213
Harmonic number 360
beta* @IP6 10 m

Mode 1G: LEReC cooling commissiong with 197Au79+ at 4.59 GeV/nucleon



Machine Parameters
No of bunches 1-111
Ions/bunch 0.3-0.6x109
Blue WP
 28.2345 // 29.2292
Yellow WP
 28.2331 // 29.2298
Harmonic number 120
beta* @IP6 4.5 m

Mode 1H: 197Au79+ at 4.59 GeV/nucleon particle energy on fixed target 197Au foil inside STAR (3.00 GeV/nucleon COM energy)



Machine Parameters
No of bunches 12
Ions/bunch 0.65x109
Yellow WP
 28.227 // 29.213
Harmonic number 120
beta* @IP6 10 m

Mode 1I: 197Au79+ on 197Au79+ at 4.59 GeV/nucleon



Machine Parameters
No of bunches 111
Ions/bunch 0.7x109
Blue WP
 28.2345 // 29.2292
Yellow WP
 28.2331 // 29.2298
Harmonic number 120
beta* @IP6 4.5 m

Mode 1J: 197Au79+ at 31.2 GeV/nucleon particle energy on fixed target 197Au foil inside STAR (7.74 GeV/nucleon COM energy)



Machine Parameters
No of bunches 12
Ions/bunch 0.9x109
Yellow WP
 28.227 // 29.213
Harmonic number 360
beta* @IP6 5 m

RHIC Run Coordinate: Chuyu Liu cliu1@bnl.gov 631-344-4431(office)
LEReC Coordinates: Alexei Fedotov fedotov@bnl.gov 631-344-5479(office)

Dmitry Kayran dkayran@bnl.gov 631-344-5136 (office)
RHIC Run Machine Specialists: Gregory Marr gmarr@bnl.gov 631-344-7810 (office)

Vincent Schoefer schoefer@bnl.gov 631-344-8453 (office)

Travis Shrey shrey@bnl.gov 631-344-7451 (office)
Scheduling Physicist: Robert Pak pak@bnl.gov 631-344-4380(office)
AGS liaison: Haixin Huang huanghai@bnl.gov 631-344-5446 (office)

Achieved parameters at Medium/Low energy Au-Au runs:

 
 units
 Run-1 Run-2
 Run-4
 Run-10
 Run-10
 Run-10
 Run-10
 Run-11 Run-11 Run-14 Run-17
Energy GeV
 65.2 9.8
 31.2
 31.2
 19.5
 5.75
 3.85
 9.8 13.5 7.3
 27.2
No of bunches ...
 56 55
 45
 111
 111
 111
 111
 111 111 111
 111
Ions/bunch 109
 0.5 0.6
 1.0
 1.2
 1.3
 1.1
 0.5
 0.9 1.45 1.1
 1.65
β* (IP6, IP8)
 m
 3.0 3.0
 3.0
 2.5
 3.0
 6.0
 6.0
 2.5, 3.0 3.0 3.5
 2.0
Peak luminosity 1026cm-2s-1 0.3 0.08
 1.2
 4.5
 2.2
 0.2
 0.1
 0.8 2.0 1.0
 10.0
Avg. store luminosity 1026cm-2s-1 0.17 0.02
 0.6
 3.0
 1.3
 0.1
 0.05
 0.4 1.2 0.2
 4.9
Luminosity per week  μb-1/week 4 1
 20
 110
 50
 3.3
 0.55
 15 30 8.1
 195
Run length weeks (physics) 5.3 0.1 1.3 2.9 1.9 1.1 4.6 1.4 1.1 3.4
 2.6
Time in store % of calendar time

65
 68
 82?
  77
  55
 71 64 57
 68