# Presentation: 024533

## RHIC Machine/Detector Planning Meeting 15 December 2004

_**Agenda**_
**Schedule Issues – update on Shorts (Yip)**
**Budget update (Kirk/Lowenstein)**
**General Remarks (Pile)**
**Report from Accelerators (Pilat)**
**Polarized Proton Update (Bai)**
**Report from experiments (STAR,PHOBOS,PHENIX,BRAHMS)**
**RCF Issues (Throwe)**
**Other business**

**Planning Meeting Web Site****: http://server.c-ad.bnl.gov/esfd/RMEM/rhic_planning.htm**

## RHIC Machine/Detector Planning Meeting

**Overall Plan **(based on presidential budget)
**18 Nov 04 - Cryo on**
**19 May 05 – RHIC Run 4 ends**
**26 May 05 – RHIC cryo switched to LN****2 ****(27 weeks total)**
**Details – as run/planned**** *****(some details based on ’04 run and are subject to change)***
**18 Nov 04 – Cool down begins**
**25 ****23**** Nov 04 – Blue Ring Cold**
**2 Dec ****28 Nov**** 04 – Yellow Cold**
**29 Nov 04**** – Short in D6-D8 dipoles Yellow Ring, schedule delay**
**3 Dec 04**** – quad bus-bus short in sector 12, shutdown to repair**
**3 Dec  ?? - “2 week” RHIC setup with beam begins**
***16 Dec 04 - ******?? Jan 05****** – “2 week” ramp-up with colliding beams begins***
**Late evening stores for experiments**
**2, 8 hr accesses for experiments if needed (based on last year’s plan) **
***30 Dec 04 ******???****** – 8 week physics with 100 GeV/n x 100 GeV/n Cu-Cu begins***
**12 Jan 05 - First experiment access, bi-weekly thereafter (all up to 8 hrs and only if needed)**
**5 Jan 05 - First beam experiment, weekly thereafter (up to 12 hrs/week)**
**24 Feb 05 – Nominal end of 8 week Cu-Cu run**
***24 Feb 05 – begin 3 week pp setup***
***17 Mar 05 – Begin 9 week pp Physics run***
**19 May 05 – end 9 week pp run, RHIC Run 5 ends**
**26 May 05 – Cryo switch to LN****2**** complete, 27 weeks of RHIC cryo operation ends**

**As of 13 Dec 04**

## RHIC Machine/Detector Planning Meeting

**Details – as run/planned **_***(based on DOE expectation of 30 cryo weeks)***_
**18 Nov 04 – Cool down begins**
**23 Nov 04 – Blue Ring Cold**
**28 Nov 04 – Yellow Cold**
**29 Nov 04 – Short in D6-D8 dipoles Yellow Ring, schedule delay**
**3 Dec 04 – quad bus-bus short in sector 12, shutdown to repair**
_**26 Dec 04 (est)**_** - “2 week” RHIC setup with beam begins**
_***3.3 calendar weeks lost***__******__*** 1.7 program weeks (est)***__******__*** 5.4 calendar weeks used to this point – 1.7=3.7 program weeks used ***__******__*** 26.3 weeks to go (18.3 physics weeks)***_
*** ******9 Jan 05 – “2 week” ramp-up with colliding beams begins***
***23 Jan 05 – ******9 ******week physics with Cu-Cu begins***
** ****27 Mar 05 – Nominal end of ****9**** week Cu-Cu run**
***27 Mar 05 – begin 3 week pp setup***
***17 Apr 05 – Begin 9******.3****** week pp Physics run***
_***15 Jun 05 – BNL Power Curtailment Program begins?***_
**21 Jun 05 – end 9.3 week pp run, RHIC Run 5 ends**
**28 Jun 05 – Cryo switch to LN****2**** complete, *****30 effective (31.7 actual)*****  weeks of RHIC cryo operation ends**

**As of 14 Dec 04**

_***We’ll develop an actual plan once we get a budget from DOE!***_

_**as of 13 Dec**_

******< 8 MW**

******~23 MW**

## Slide 5

## Now (Shutdown for short fix) <8 MW above the 5 MW C-AD base 

Full RHIC Program ~23 MW above the 5 MW base 

Dec electricity will cost about $55/MW compared to about $52 for full running

Lost helium due to partial warm-up will cost ~$30-$35K or about 1 day power cost equivalent...so

Each day in this "shutdown mode" will cost us 
8/23*55/52 = 0.4 days so...14 days shutdown translates into 
0.4*14+1 day = 6.6 days lost to RHIC experiment running

or roughly we loose < 1 day of running for every 2 days we spend in the shutdown mode...

- Full RHIC Program ~23 MW above the 5 MW base
- Dec electricity will cost about $55/MW compared to about $52 for full running
- Lost helium due to partial warm-up will cost ~$30-$35K or about 1 day power cost equivalent...so
- Each day in this "shutdown mode" will cost us
**8**/23*55/52 = **0.4** days so...14 days shutdown translates into
**0.4***14+1 day = **6.6** days lost to RHIC experiment running
- or roughly we loose **< 1** day of running for every 2 days we spend in the shutdown mode...

_**Translating the short fix time into lost running days...**__**UPDATE**_

## RHIC Machine/Detector Planning MeetingArchive

## RHIC Machine/Detector Planning Meeting 17 November 2004

_**Purpose of this meeting:**_
- To address issues and priorities relating to the optimization of physics output from RHIC experiments.
- To discuss and promulgate policy (when needed).

## RHIC Machine/Detector Planning Meeting 17 November 2004

_**PAC Recommendations (very short summary):**_
- 8-10 week pp run should have highest priority
- Cu-Cu run should accumulate an integrated delivered luminosity of at least 7 nb-1 at        = 200 GeV
- Cu-Cu at         = 62.4 GeV and 1 day at injection is advisable if above goals are met
- 1-2 day pp (unpolarized) run at        = 400-500 GeV desirable

## RHIC Machine/Detector Planning Meeting

**End of Run?**

**Minimum Goal**

******* = 1 meter**