RUN 11 RHIC MACHINE/EXPERIMENTS MEETING

26 Apr 2011

Agenda:

• Progress reports, √s = 18 GeV/n Au-Au run

Run 11 Plan based on PAC recommendation/ALD Guidance and available funds 4/26/10 update (2/2)

• 3 Jan, Begin cool-down to 4.5K • 8 Jan, Cool-down to 4.5K complete in both rings, preliminary setup begins• 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)• 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• 18 Apr, end 9.4 week physics run at √s = 500 GeV• 18 Apr jet target polarization measurement at injection (<5%) • 19 Apr, short maintenance followed by setup for √s = 18 GeV AuAu• 23 Apr, begin ~1 week physics run (√s = 19.6 AuAu)

• 26 April - TODAY• 2 May, end 1.3 week physics run at √s = 19.6 GeV• 2 May, begin 1 week setup for √s = 200 AuAu• 9 May (or sooner), begin 1 week Ramp-up with 8 hr/night beam to experiments• 16 May, begin ?? week physics run at (√s = 200 GeV/n AuAu)• 29 June, end 6.3 week AuAu physics run at √s = 200 GeV/n , begin warm-up• 30 June, cryo warm-up ~ complete, end 25.4 weeks cryo operation

What’s missing :• Run into July?• Uranium test/physics run• Low energy test run

only 2 days!

AuAu at √s = 19.6 GeV – all runs to date

Thru fill 15591

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RHIC Fill Number

STAR ZDC Delivered Counts, √s = 19.6 GeV

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23-Apr-11 24-Apr-11 25-Apr-11 26-Apr-11 27-Apr-11 28-Apr-11 29-Apr-11 30-Apr-11 1-May-11 2-May-11

Date

STAR ZDC Delivered Counts, √s = 19.6 GeV

Thru fill 15591

Power demand penalty (part 1)• Transmission = $5,680/MW • NYPA administrative = $190/MW

– Total = $5,870/MW– RHIC ON/OFF difference ~ 20 MW– RHIC ON demand charge = 20x$5870 = $117,400

• LIPA “wheeling” charge– RHIC ON = $123,000– RHIC OFF = $63,550– Difference = $59,450

• Total Demand Penalty = $117,400 + $59,450 = $176,850

Run into July – an issue…

• BNL is assessed another penalty based on the BNL power demand on the day of the NY state peak power demand for the summer

• The penalty is assessed as a monthly charge during the next year.

• Mark Toscano estimates the penalty would be about $27,000 x 20 MW = $544,000 but risk is low as the NY State peak in past years has occurred in August.

• Plus balanced billing costs are $70/MWhr in June and July

Power demand penalty (part 2)

Old information

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.

• 4/11-15/2011, End 250 GeV pp on18 April, switch to 18 GeV AuAu on after jet target polarization measurement at injection is completed

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.

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11-Feb 18-Feb 25-Feb 4-Mar 11-Mar 18-Mar 25-Mar 1-Apr 8-Apr 15-Apr

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live

red

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min

os

ity

(pb

-1)

Date

STAR PHENIX ANDY X10

STAR Goal (50% Pol)

PHENIX Goal (50% Pol)

max

min

thru final fill 15472, 18 Apr

0.50

0.75

1.00

1.25

1.50

1.75

2.00

15160 15210 15260 15310 15360 15410 15460

Rati

o PH

ENIX

/STA

R ZD

C (s

ingl

es co

rrec

ted)

fill number

Phenix/STAR Lumi Ratio, 250 GeV pp Run 11

Final Lumi should change as it appears there’s an issue with the singles correction

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1

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PHEN

IX p

b-1/

stor

e (s

ingl

es c

orre

cted

)

blue beam intensity at physics start (1E11/bunch)

Phenix Lumi vs beam intensity, 250 GeV pp Run 11

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wee

k (s

ingl

es co

rrec

ted)

blue beam intensity at physics start (1E11/bunch)

PHENIX projected lumi per week

projected pb-1 per week based on 100 hrs at storefor stores > 6 hours

Run 11 projected maximum

Store 15443 (12 Apr)

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rred

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imm

mr,

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aliz

ed)

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inferred beam emittance vs beam intensity, 250 GeV pp Run 11

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Infe

rred

em

ittan

ce (p

imm

mr,

norm

aliz

ed)

blue beam intensity at physics start (1E11/bunch)

inferred beam emittance vs beam intensity, 250 GeV pp Run 11

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ZDC

fast

com

pone

nt li

feti

me

(hrs

))

blue beam intensity at physics start (1E11/bunch)

ZDC fast component lifetime vs beam intensity, 250 GeV pp Run 11

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Pola

riza

tion

Fill Number

Run 11 Yellow beam polarization as measured with the jet target

jump quads operational for RHIC fills

4/17/2011fill 15470

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Pola

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tion

Fill Number

Run 11 Blue beam polarization as measured with the jet target

jump quads operational for RHIC fills

4/17/2011fill 15470

0.200.250.300.350.400.450.500.550.600.650.700.750.80

15150 15200 15250 15300 15350 15400 15450 15500

Pola

riza

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)

4/17/2011fill 15470

0.200.250.30

0.350.400.450.50

0.550.600.65

0.700.75

0.80

15150 15200 15250 15300 15350 15400 15450 15500

Pola

riza

tion

Fill Number

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

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

4/17/2011fill 15470

Blue average = 45.3 +/- 0.6%

Yellow Average = 45.8 +/- 0.6%

one store

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Pola

riza

tion

Fill Number

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

4/17/2011fill 15470

~ Best Store (scaling to 100 hrs at store), 12 April8.2 hour store, 2.64 pb-1, peak lumi 143 x 1030 cm-2s-1

Bunched intensity at beginning of physics 1.64/1.63 x 10 11

Run 11 Projected maximum

PHENIX with singles correction

no singles correction

-16%

-8%-17%

Run 11 Projected maximum (170 x 1030 cm-2s-1)

Inferred emittance = 20.7 pmmmr

y = 0.1112x2 - 1.0246x + 2.3583

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140

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mill

ion

even

ts/w

eek

root s (GeV/n)

Low energy AuAu, million events/week

Estimate for 18 GeV/n

Through 14 Apr 2011

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15

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1-Ju

l-08

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81-

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-08

1-D

ec-0

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091-

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-09

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ay-0

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-09

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n-10

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eb-1

01-

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-10

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pr-1

01-

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-10

1-Ju

n-10

1-Ju

l-10

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ug-1

01-

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-10

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ct-1

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-10

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-11

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ar-1

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-11

Dai

ly A

vera

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Po

wer

(M

W)

Date

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 14 Apr 2011

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Days since beginning of Run

RHIC Operations FY09-11CAD Power 09

CAD Power 10

CAD Power 11

Through 14 Apr 2011

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Days since beginning of Run

RHIC Cryo Operations FY09-11RHIC Cryo 09

RHIC Cryo 10

RHIC Cryo 11

Through 14 Apr 2011

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5.50

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6.50

7.00

7.50

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MW

Days since beginning of Run

RHIC Cryo Operations FY09-11RHIC Cryo 09

RHIC Cryo 10

RHIC Cryo 11

Run 11 Plan based on PAC recommendation/ALD Guidance and available funds 4/26/10 update (1/2)

• 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• 15 April Continuing Resolution Ends, guidance to follow• 18 Apr, end 9.4 week pp physics run at √s = 500 GeV • 18 Apr jet target polarization measurement at injection (<5%) • 19 Apr, short maintenance followed by setup for √s = 18 GeV AuAu• 23 Apr, begin ~1 week physics run (√s = 19.6 AuAu)

• 2 May, end 1.3 week physics run at √s = 19.6 GeV

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Pola

riza

tion

(%

)

energy (GeV)

Up down ramp, Blue Beampolarization with current analyzing powers

Up

Down

+11.0 %

-28.5 %

+6.8%

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Asy

mm

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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65.00

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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 %

0.30

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0.60

0.70

0.80

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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

$(20)

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-11

$/M

Wh

rBNL Energy Cost

Billed Cost/MWhr

Without Balanced Billing

Balanced Billing Projection

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 41

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