1. RHIC Heavy Ion Operations THE RHIC TEAM Brookhaven National Lab LHC-LUMI-2005 Arcidosso

2. Run-5 Cu-Cu Integrated Luminosity
RHIC Run 5 Delivered s= 200 GeV/u Cu-Cu Luminosity
b*=0.85m
(0.89m)
b*=2.6m
b*=3.0m
(calendar) time at store: 53%
Cu-Cu ZDC cross section measured at 2.6 barn
Accurate average luminosity prediction (8x1027 cm-2 s-1) and slope projections
Beta squeeze from 1m to 0.85 m (measured 1.1 m to 0.89 m)
In-run optimization of intensity and number of bunches

3. RHIC Availability and Time in Store
Excellent availability (82%) despite very complex operational modes.
Machine setup time reduced to 2.5 weeks.
Time in store (53%) comparable to successful Au-Au Run-4 run
Goal is 60% time in store

4. Weekly Cu-Cu Luminosity and Physics Time
Run5 Cu-Cu 100 GeV Delivered Integrated Luminosity by Week
101 hours/week is 60% calender time in store

5. Turn-Around-Time (TAT)
Run5 Cu-Cu (s=200 GeV)
Average: 75 minutes between physics stores
Blizzard
Equiment failures
Power dips
Experiment accesses
Pressure rise
Permit pulls
Quench link interlocks
Turn-around-time: Beam dump to next declaration of physics store

6. 5-Year RHIC Performance
Nucleon-pair luminosity A1A2L delivered to PHENIX
HI Luminosity exceeding design in three years

7. RHIC HI Achieved and Planned Parameters
Mode
No of bunches
Ions/bunch [109]
b* [m]
Lstore ave [cm-2s-1]
A1A2Lstore ave
[cm-2s-1]
A1A2Lstore peak
Au-Au design 56
1.0 2
21026
81030
311030
d-Au [Run-3]
55 (110)
120d/0.7Au
31028
61030
241030
Au-Au [Run-4] 45
1.1 1
41026
161030
581030
Cu-Cu [Run-5] 36
4.5
0.85
801026
321030
791030
Au-Au enhanced
112
81026
1241030
For s=200 GeV/n Au-Au, the enhanced luminosity goal (c. 2008, before electron cooling) is
Lstore ave = 8x1026 cm-2 s-1
4x design
2x achieved