The Relativistic Heavy Ion Collider Run-12
  Heavy Ion Operations 

[STAR]  [PHENIX]  [Machine/Detector Planning] 
[RHIC AGS Machine Status (ESFD)]  [Scheduling Physicist]  [Accelerator Physics Experiments FY12]


Max. achieved 2011 Au-Au run:
E
 GeV

1026cm-2s-1

μb-1/week
100
Lpeak
 52.6
Lavg
 1000

Current information
[C-AD Broadcast]  [Ring Temperatures]  [Configuration Control]  [Maintenance schedules]
Logs
 [RHIC Cu-Au Run elog] [RHIC U-U Run elog]  [OC elog]   [elogs] 
Schedules

[Plan of the Day]  [RHIC Shift Leaders Schedule]
U-U  96.6 GeV  Start-up:    [General Plan]  [Shift-by-shift Work Plan] 
Cu-Au 100 GeV  Start-up:  [General Plan]  [Shift-by-shift Work Plan]
Au-Au 2.5 GeV Plan of the Day

References
[U-U Run Parameters(Gardner)]  [Cu-Au Run Parameters(Gardner)]
[Blue Ring Madx File]  [Yellow Ring Madx File]  [Twiss Paramters of Blue]  [Twiss Parameters of Yellow]  [Dynamic Aperture Calculation]
[Energy and Species Change Checklist]  [Operation Training]  [RHIC Operation Recipes]
[Objects in Blue]  [Objects in Yellow]  [Controls]  [Operations]  [QLI Analysis] 
Run Analysis
[Run 12 Spreadsheets  & Store Statistics ] 


Timeline of 2012 RHIC ion run

  • 19 April,  Thursday, end 255 GeV p-p physics run at √s = 500 GeV 
  • 19 April,  begin 1 week setup for U-U run ( with overnight stores for experiments since Sunday night )                          
  • 24 April,  begin 3 week U-U physics run 
  • 27 April,  longitudinal cooling on in both rings
  • 02 May , APEX from 08:00AM--07:00PM
  • 03 May , vertical cooling on in both rings 
  • 07 May,  horizontal cooling on in both rings since fill 16836
  • 12 May,  AGS bunch merging since fill 16851
  • 15 May,  the last U-U store Fill 16859 dumpd at 9:00AM

  • 15 May,  begin  Cu-Au run setup
  • 18 May,  begin 5.3 weeks Cu-Au run from fill 16889
  • 20-25 May, IPAC'12, Neworlens, USA
  • 23 May,  3-D cooling on since fill 16910 
  • 21 June,  adding the third collision at IP2 for Star detector test from Fill 17010.
  • 24 June,  three experiments reached their goals
  • 25 June,  end 5.3 weeks of Cu-Au run, the last fill No. is 17027.

  • 25 June, started 2.5 GeV Au-Au run test
  • 27 June, end of  2.5 GeV Au-Au run test at 12:00PM
 

RHIC Parameters for 96.4 GeV U-U Run

 

beam energy[GeV]

working point (Qx,Qy)

β*(IP 6 8 10 12 2 4)

injection

9.796 

B: (28.23, 29.22), Y:(28.23, 29.22)

9 9 9 9 9 9

ramp

9.796 -- 96.4

B: (28.23, 29.22), Y:(28.23, 29.22)

beta squeeze

store

96.4

B: (28.23, 29.22), Y:(28.23, 29.22)

0.7 0.7 5 5 5 5

RHIC Parameters for 100 GeV Cu-Au Run

 

beam energy[GeV]

working point (Qx,Qy)

β*(IP 6 8 10 12 2 4)

injection

9.796

B: (28.23, 29.22), Y:(28.23, 29.22)

9 9 9 9 9 9

ramp

9.796 -- 100

B: (28.23, 29.22), Y:(28.23, 29.22)

beta squeeze

store

100

B: (28.23, 29.22), Y:(28.23, 29.22)

0.7 0.7 5 5 5 5

Achieved parameters at  previous 100 GeV Au-Au runs:

 
 units
 design Run-2 Run-4
 enhanced design Run-7
 Run-10
 Run-11
Energy GeV
 100 100 100
 100 100
 100
 100
No of bunches ...
 55 55 45
 111 103
 111
 111
Ions/bunch 109
 1.0 0.6 1.1
 1.0 1.1
 1.1
 1.5
β* (IP6, IP8)
 m
 2.0 1.0 1.0
 1.0 0.8
 0.7
 0.7
Peak luminosity 1026cm-2s-1 9 4 15
 30 30
 40
 50
Avg. store luminosity 1026cm-2s-1 2 1.5 5
 8 12
 20
 30
Luminosity per week  μb-1/week 50 24 160
 300 380
 650
 1000
Run length weeks (physics) -- 15.9 12 -- 12.8 10.9 6.4
Time in store % of calendar time
26 53
49
 53

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
Energy GeV
 65.2 9.8
 31.2
 31.2
 19.5
 5.75
 3.85
 9.8 13.5
No of bunches ...
 56 55
 45
 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
β* (IP6, IP8)
 m
 3.0 3.0
 3.0
 2.5
 3.0
 6.0
 6.0
 2.5, 3.0 3.0
Peak luminosity 1026cm-2s-1 0.3 0.08
 1.2
 4.5
 2.2
 0.2
 0.1
 0.8 2.0
Avg. store luminosity 1026cm-2s-1 0.17 0.02
 0.6
 3.0
 1.3
 0.1
 0.05
 0.4 1.2
Luminosity per week  μb-1/week 4 1
 20
 110
 50
 3.3
 0.55
 15 30
Run length weeks (physics) 5.3 0.1 1.3 2.9 1.9 1.1 4.6 1.4 1.1
Time in store % of calendar time

65
 68
 82?
  77
  55
 71 64

Yun Luo :  yluo@bnl.gov