RUN 11 RHIC MACHINE/EXPERIMENTS MEETING

12 Apr 2011

Agenda: Open

RUN 11 RHIC MACHINE/EXPERIMENTS MEETING

DECISIONS

• 11/23/2010, APEX: Agreed to new APEX schedule, 12 hour sessions (0800-2400) every other week away from maintenance days.

• 2/25/2011, CNI Polarimeters Normalization: Beginning with physics store 15239, changed CNI Polarimeter analyzing power to agree with jet target polarization measurements …18% lower polarization than before.

• 4/11/2011, Switch to 18 GeV AuAu on Monday, 18 April

Decisions (cont’)

3/25/2011: AnDY Collisions (W. Fischer, L. Bland, E. Aschenauer, S. Vigdor):

(1) A. Drees will test the sequence developed to address both orbit and tune effects of AnDY at the end of a store (or multiple stores if needed). (2) When the proper functioning of the sequence is demonstrated we will go back to a 1.05e11/bunch threshold, and increase every store by another 0.05e11/bunch until we reach a 10-20% luminosity impact on STAR and PHENIX. In the event the prescribed bunch intensity is not reached during the store then AnDY should be steered into collision during the last 30 minutes of the store. (3) When the tune scan on the ramp finishes (~2 more tune to test), we will increase the store length to 10h or more, (with PHENIX/STAR concurrence), with this AnDY will have more time available after turning on.

Run 11 Plan based on PAC recommendation/ALD Guidance and 28.3 weeks cryo operation4/12/10 update

• 3 Jan, Begin cool-down to 4.5K • 8 Jan, Cool-down to 4.5K complete in both rings, preliminary setup begins• ~11 Jan, 2 ⅟2 weeks beam setup for √s = 500 GeV pp in RHIC begins.• 15 Jan, power supply work/DX training complete• 17 Jan, first successful ramp• 19 Jan, 1st maint day• 24 Jan, 1 week Ramp-up with 8 hr/night beam to experiments• 11 Feb (machine and ~experiments), begin ~10 week physics run (√s = 500 GeV pp)• 16 Feb, AGS Jump Quads in routine operation for RHIC injection• 24 Feb, 9 MHz cavity in routine operation • 7 Mar, cryo troubles, extended maintenance, 0900 hrs till 2000 hrs 14 Mar – lost 7.5 days• 17 Mar, power distribution problem, extended maintenance, 1930 hrs till 0315 hrs 20 Mar – lost 2.3 days• 28 March – 1 April, PAC 2011

• 14 April Continuing Resolution Ends, guidance to follow• 18 Apr, end 9.4 week physics run at √s = 500 GeV pp run• 18 Apr begin setup for √s = 18 GeV AuAu• 25 Apr, begin 1 week physics run (√s = 18 AuAu)• 2 May, end 1 week physics run at √s = 18 GeV• 2 May, begin 1 week setup for √s = 200 AuAu• 9 May, begin 1 week Ramp-up with 8 hr/night beam to experiments• 16 May, begin ?? week physics run at (√s = 200 AuAu)• 4 Jul, completed 26 weeks cryo operations (7 weeks 200 GeV AuAu to this point)

What’s missing :• Uranium test/physics run• Low energy test run• cryo warm-up

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STAR PHENIX ANDY X10

STAR Goal (50% Pol)

PHENIX Goal (50% Pol)

max

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thru fill 15438, 11 Apr

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Run 11 250 x 250 GeV pp, Luminosity2.9 mb STAR, 2.7 mb PHENIX, 2.8 mb (not right) ANDY

STAR PHENIX ANDY X10

max

min

thru fill 15438, 11 Apr

Monday, 18 April (9.4 weeks physics)

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65.00

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Pola

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energy (GeV)

Up down ramp, Blue Beampolarization with current analyzing powers

Up

Down

+11.0 %

-28.5 %

+6.8%

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Asy

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etry

(x10

2 )

energy (GeV)

Up down ramp, Blue BeamAsymmetry

Up

Down

-15.0%

-11.3%

-5.0%

7 April Up-Down Ramp measurementBlue Beam

Current CNI average analyzing powers are:Energy AN

24 0.0144100 0.0122250 0.0147

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Pola

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tion

(%

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energy (GeV)

Up down ramp, Yellow Beampolarization (#1 only) with current analyzing powers

Up

Down

+24.4 % -23.1 %

-0.4 %

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0.40

0.50

0.60

0.70

0.80

0.90

0 50 100 150 200 250 300

Asy

mm

etry

(X10

2 )

energy (GeV)

Up down ramp, Yellow Beamasymmetry (CNI #1 only)

Up

Down

-13.3%

-15.9%

-1.9%

7 April Up-Down Ramp measurementYellow Beam (only Yellow 1 was used as Yellow 2 was acting up)

Current CNI average analyzing powers are:Energy AN

24 0.0144100 0.0122250 0.0147

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Pola

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Fill Number

Run 11 Yellow beam polarization as measured with the jet target

jump quads operational for RHIC fills

4/8/2011fill 15427

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Pola

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Fill Number

Run 11 Blue beam polarization as measured with the jet target

jump quads operational for RHIC fills

4/8/2011fill 15427

0.200.250.300.350.400.450.500.550.600.650.700.750.80

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Pola

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tion

Fill Number

Run 11 polarization as measured with jet target (4 fill average)

B_Po (w/jump quads) B_Po (w/o jump quads)

4/8/2011fill 15427

0.200.250.30

0.350.400.450.50

0.550.600.65

0.700.75

0.80

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Pola

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Fill Number

Run 11 polarization as measured with jet target (4 fill average)

Y_Po (w/jump quads) Y_Po (w/o jump quads)

4/8/2011fill 15427

Blue average = 46.3 +/- 0.8%

Yellow Average = 46.3 +/- 0.7%

two stores

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Run 11 Source, AGS polarization (CNI), 250 GeV RHIC (jet target) (4 fill average when available)

Y_Po (w/jump quads)

B_Po (w/jump quads)

Y_Po (w/o jump quads)

B_Po (w/o jump quads)

AGS(CNI)

Source

4/8/2011fill 15427

Physics Stores 15398 through 15442

Run 11 Projected maximumAchieved Run 9

Physics Stores 15398 through 15442

Run 11 Projected maximum

Lmax = 170 x 1030 cm-2s-1 (projection with 2.7 mb xsection)

Lmax achieved Run 9, 85 x 1030 cm-2s-1

Physics Stores 15398 through 15442

Old information

Through 31 Mar 2011

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BNL Energy Use FY 2009-11RHIC Cryo RHIC other AGS-Exp

Booster AGS-Mach Tandem

CAD Bldg less SMD NSRL Site Base

BNL Peak-Av

Site total not recorded 30 Nov 09through Oct 2010

Through 31 Mar 2011

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MW

Days since beginning of Run

RHIC Cryo Operations FY09-11RHIC Cryo 09

RHIC Cryo 10

RHIC Cryo 11

Through 31 Mar 2011

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RHIC Operations FY09-11CAD Power 09

CAD Power 10

CAD Power 11

$(20)

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RHIC ON

AGS SEB/FEB

NSRL

through Feb 2011

A good store with 9 MHzSat 2/26

Run 11, First overnight store, Mon Jan 24 00:12Fill number 14919,, s=500 GeV21 days since start of cool-down

20K

20 x 1011

• 28 x 27 bunches• b*=0.65 meters

For peak store lumi = 170 x 1030 cm-2s-1 (projected MAXIMUM)ZDC Rate ~ 400K (assuming 2.4 mb n-pair xsection)

Run 9, First overnight store at s=500 GeV22 days after start of cool-down

• 56 x 56 bunches• b*=0.7 meters

40K

40 x 1011

AGS pp log, 23 Feb 09, 00:26

26 weeks

http://www.bnl.gov/cad/esfd

AGS-Booster-Tandem/Linac/EBIS Startup

RHIC Cryo Cooldown to 45 deg K

RHIC Cryo Cooldown/Warm-up

RHIC Cryo Operation

RHIC Cryo off

RHIC STAR & PHENIX

RHIC Research with s = 500 GeV pp

RHIC Research with s = 200 GeV /n AuAu

RHIC Research with s = 192 GeV /n UU

RHIC Research with s = 18 GeV /n AuAu

RHIC Drell-Yan Test (2:00 IR)

Low Energy Au test(?)

Particle Accelerator Conference

NSRL (NASA Radiobiology)

BLIP (Isotopes)

BLIP (other)

Shutdown (RHIC)

C-A Operations-FY11

Program Element Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep

FY 2011

26 Jan 11

setup with beams

Sep

concurrent with RHIC

ramp up luminosity

5 Oct

28.3 weeks

3Jan

24 Nov

setup as required

10 weeks physics

10 weeks

8 weeks

.4 weeks

planned (budget permitting)

NSRL 111B actual schedule to be determined

11A 11B10C

20 Jul

RHIC Schedule subject to change

10 Jun

1.5

15 Mar 20 May

PHENIX Goal (50% pol)

STAR Goal (50% pol)

Goals to be updated/corrected

Run-11 Au-Au luminosity projections 100 GeV/nucleon

Wolfram Fischer 28

Assume 6 weeks to ramp-up for min, and 8 weeks for max (stoch. cooling re-commissioning).Expect Lavg up to 25x1026cm-2s-1 (+25%).

[from Run-10 to max: b* = 0.75 0.65 m, Nb = 1.1 1.1x109, more cooling]

PHENIX Goal (0.7 recorded)

?? (complicated)

STAR Goal (TBD)

Goals to be updated/corrected