1

RHIC Machine/Detector Planning Meeting 4 Dec 07

Agenda

– Misc and Power (Pile)

– Proposal for Low Energy Au-Au Run (Satogata)

Planning Meeting Web Site: http://www.c-ad.bnl.gov/esfd/RMEM_08/rhic_planning.htm

2

Run8 RHIC dAu Available Integrated Luminosity for Physics

0.0

1.0

2.0

3.0

4.0

5.0

6.0

7.0

8.0

9.0

10.0

27

-No

v

28

-No

v

29

-No

v

30

-No

v

1-D

ec

2-D

ec

3-D

ec

4-D

ec

mb

-1/d

ay

STAR

PHENIX

Lmax

Lmin

3Note: STAR Physics for min-bias only

Run8 RHIC dAu Integrated Luminosity for Physics

0.0

1.0

2.0

3.0

4.0

5.0

6.0

7.0

8.0

9.0

10.0

27-No

v

28-No

v

29-No

v

30-No

v

1-Dec

2-Dec

3-Dec

4-Dec

Since beginning of Physics

m b-1

per

day

STAR

PHENIX

Lmax

Lmin

4

Machine declared operational for Physics at 1600 hrs*=1 m, 56x56 bunches

5.3 x 1028 cm-2s-1

(1 kHz = 0.192 x 1028 cm-2s-1)*

* 11/29/07 vernier ScanIR8=0.52b, IR6=0.47b

4.8 x 1028 cm-2s-1

(1 kHz = 0.212 x 1028 cm-2s-1)*

Run08, First “Physics” Store

5

Today…87 x 87 bunches, 1 meter *, stochastic cooling ON

“Maximum” Goals:• d/bunch: 1.2 x 1011

• Au/bunch: 1.1 x 109

• # bunches: 83• *: 1 meter

7.0 x 108Au/bunch

0.55 x 1011d/bunch

6

Today…87 x 87 bunches, stochastic cooling ON

* 11/29/07 vernier ScanIR8=0.52b, IR6=0.47bPHENIX: 1 kHz = 0.192 x 1028 cm-2s-1

STAR: 1 kHz = 0.212 x 1028 cm-2s-1

7.5 x 1028 cm-2s-1 half-life = 3.2 hrs

“Maximum”average lumi/store(based on PHENIX vernier scan)

Run-3 Achieved average ZDC rate/store(scaled to present PHENIX vernier scan)

7

As of 11/30/07

BNL Energy Use FY 2006-8(C-AD Bldg 911 power is in AGS-Exp/Mach)

0

5

10

15

20

25

30

35

40

45

501

-Oct

-05

1-D

ec-

05

1-F

eb

-06

1-A

pr-

06

1-J

un

-06

1-A

ug

-06

1-O

ct-0

6

1-D

ec-

06

1-F

eb

-07

1-A

pr-

07

1-J

un

-07

1-A

ug

-07

1-O

ct-0

7

1-D

ec-

07

Date

Dai

ly A

vera

ge

Po

wer

(M

W)

$-

$10

$20

$30

$40

$50

$60

$70

$80

$90

$100

$110

$/M

Wh

r

RHIC Cryo RHIC otherAGS-Mach CAD Bldg less SMDTandem BoosterAGS-Exp NSRLSite Base Peak-Av$/MWhr

begin "balanced billing"

8

New for FY08 – 45 degree cold wave

As of 11/29/07

RHIC Cryo Operations FY07-08

0.00

1.00

2.00

3.00

4.00

5.00

6.00

7.00

8.00

9.00

10.00

-30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30

Days since beginning of Run

MW

RHIC Cryo 07

RHIC Cryo 08

9

As of 11/29/07

RHIC Cryo Operations FY06-08

0.00

1.00

2.00

3.00

4.00

5.00

6.00

7.00

8.00

9.00

10.00

-30 -10 10 30 50 70 90 110 130 150 170 190

Days since beginning of Run

MW

RHIC Cryo 06

RHIC Cryo 07

RHIC Cryo 08

10

As of 11/29/07

RHIC Operations FY06-08

0.00

5.00

10.00

15.00

20.00

25.00

30.00

35.00

-30 -10 10 30 50 70 90 110 130 150 170

Days since beginning of Run

MW

CAD Power 06

CAD Power 07

CAD Power 08

11

FY 2006-7 Power Bill

$-

$20

$40

$60

$80

$100

$120

$140Ju

n-0

5

Se

p-0

5

De

c-0

5

Ma

r-0

6

Jun

-06

Au

g-0

6

No

v-0

6

Fe

b-0

7

Ma

y-0

7

Au

g-0

7

No

v-0

7

Fe

b-0

8

Ma

y-0

8

Au

g-0

8

No

v-0

8

$/M

Wh

rWith Balanced Billing

Without BalancedBilling

Projection

12

RHIC Machine/Detector Planning Meeting4 Dec 07

Next Meeting

Tuesday, December 11

Agenda items:– open

Planning Meeting Web Site: http://www.c-ad.bnl.gov/esfd/RMEM_08/rhic_planning.htm

13

Lave(store) - GOAL

RHIC Machine/Detector Planning Meeting26 Mar 2003Page 10/14

ZDC=22K-11K in 2.2 hrs,*=2m d=58, Au=35

14

ZDC=29K-14.5K in 3 hrs,*=1m

d=45, Au=35

Expected ZDC rate (scaling from Run 03) = 22K*(45*35)/(58*35)*2/1 = 34

15

Run 8 Log– 25 Oct, begin 45 degree cold wave (2.5 MW-NEW)

– 1 Nov, Cool-down to 4.5 degrees begins

– 4 Nov, Blue ring cold but still stabilizing

– 6 Nov, Blue and Yellow cold and stable (0.9 weeks into run)

– 8 Nov, Beam in Blue ring, “Setup Mode begins”

– 16 Nov, Beam in Blue and Yellow rings

– 18 Nov, First collisions (2.6 weeks into run)

– 19 Nov, Experiment Magnets on, begin night shifts for experiments, “Ramp-up Mode” begins (2.7 weeks into run)

– 26 Nov (1600 hrs), Machine declared operational for Physics (3.7 weeks into run)

16

8

BNL Power Cost, past 6 years

$0

$20

$40

$60

$80

$100

$120

Jun

-00

Jun

-01

Jun

-02

Jun

-03

Jun

-04

Jun

-05

Jun

-06

Jun

-07

Jun

-08

$/M

Wh

rBilled Cost/MWhr

Projection

?

17

Experiments luminosity goals for Run 8, 100 x 100 GeV pp

– PHENIX• Delivered luminosity = 140 nb-1

• Recorded luminosity = 35 nb-1

– Longitudal Polarization goal: 26 nb-1

– Transverse polarization luminosity goal: 9 nb-1

• Assumed efficiencies: 48% vertex, 64% up, 82% live 25% overall• Assumed polarization: 65%• Approximate physics weeks: 12

– STAR• Delivered luminosity = 90 nb-1

– Longitudal polarization goal: 60 nb-1

– Transverse polarization luminosity goal: 30 nb-1

• Slow detector sampled luminosity (Transverse and Longitudal) = 30 nb-1

• Assumed efficiencies: 50% uptime, 65% live 33% overall• Assumed polarization: 65%• Approximate physics weeks: 12

• pp2pp: 3 days of dedicated running • Goals: 20M elastics, 300K double pomeron exchange events

An issue: In 2006 it took 6 weeks of physics running to get from ~45% polarization to ~60% polarization, above goals assume 65% from physics day 1

(Last update 23 Oct 07)

18

Phenix Goal

Phenix GoalPHENIX Goal

STAR Goal

STAR and PHENIX Plan

19

(last update 10/23/07)

Experiments luminosity goals for Run 8 100 x 100 GeV/n d-Au

– PHENIX• Delivered luminosity = 230 nb-1

• Recorded luminosity = 58 nb-1

• Assumed efficiencies: 48% vertex, 53% live 25% overall• Approximate weeks: 10

– STAR• Delivered luminosity = 120 nb-1

• Fast Detector sampled luminosity = 60 nb-1

• Slow Detector sampled luminosity = 30 nb-1

• Fast detector overall sampling efficiency = 50%• Approximate weeks: 10

– Monopole Proposal – Detector Tests• Once ~ 20:1 signal to background is achieved in building 902, move to 10:00 IR,

reestablish good signal to background and then request collisions

20

PHENIX Goal

STAR Goal

STAR and PHENIX Plan

21

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

AGS-Booster-Tandem/Linac Startup

RHIC Cryo Cooldown/Warm-up

RHIC Cryo Operation

RHIC Cryo off

RHIC Research with s = 200 GeV/n d-Au

RHIC Research with s = 200 GeV pp

RHIC Other (TBD)

NSRL (NASA Radiobiology)

Shutdown (RHIC)

C-A Operations-FY08

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

FY 2008

1 Oct 07

setup with beams in both rings

Planned, subject to change

30.3 weeks

Sep

concurrent with RHIC

ramp up luminosity

27 May

switch date to be determined

schedule to be determined

10 weeks

12 weeks

22

Fischer et.al. Possible 30 week run schedule