# Presentation: 763593

## RHIC Machine/Detector Planning Meeting 5 Jan 05

_**Agenda**_
**Schedule Issues – (Montag)**
**General Remarks (Pile)**
**Report from Accelerators (Pilat)**
**Polarized Proton Update (Bai)**
**Report from experiments (STAR,PHOBOS,PHENIX,BRAHMS)**
**When will experiment be ready to accept high luminosity?**
**RCF Issues (Throwe)**
**Other business**

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

_**as of 2 Jan**_

## Slide 3

## Shutdown from 3 Dec-27 Dec (24 days) for short repairs
Energy use during this period, above the 5 MW RHIC/AGS base
9162 MWhr (actual use) – (5 MW*24 days*24 hrs/day)=6282 MWhr
Cost: $59.72/MWhr*6282MWhr = $375K + $35K for lost helium = $410K

Full RHIC Program runs at ~23 MW above the 5 MW base – So cost for 24 days is:
$54/MWhr*23MW*24hrs*24days = $715K
Lost days = 24*410/715 = 13.8 days

Our initial rough estimate of 1 day lost for every 2 shutdown days was about right.

 So we can add 10 days to a nominal 30 week run

- Energy use during this period, above the 5 MW RHIC/AGS base
- 9162 MWhr (actual use) – (5 MW*24 days*24 hrs/day)=6282 MWhr
- Cost: $59.72/MWhr*6282MWhr = $375K + $35K for lost helium = $410K
- Full RHIC Program runs at ~23 MW above the 5 MW base – So cost for 24 days is:
- $54/MWhr*23MW*24hrs*24days = $715K
- Lost days = 24*410/715 = 13.8 days
- Our initial rough estimate of 1 day lost for every 2 shutdown days was about right.
-  So we can add 10 days to a nominal 30 week run

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

## 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**
**27 Dec 04 – short problem resolved, rings at 4 degrees again**
**27 Dec 04 - “2 week” RHIC setup with beam began**
**28-29 Dec 04 – found & fixed aperture problem in Yellow Ring (piece of Al foil)**
***  ******5 Jan 05****** – “2 week” ramp-up with colliding beams begins***
***19 Jan 05 – ******9 ******week physics with Cu-Cu begins ******(actual # of weeks TBD)***
**23 Mar 05 – End of ****9**** week Cu-Cu run**
***23 Mar 05 – begin 3 week pp setup***
***13 Apr 05 – Begin ******9.6****** week pp Physics run***
_***15 Jun 05 – BNL Power Curtailment Program begins?***_
**19 Jun 05 – end 9.6 week pp run, RHIC Run 5 ends**
**26 Jun 05 – Cryo switch to LN****2**** complete, *****30 effective (31.4 actual)*****  weeks of RHIC cryo operation ends**

**As of 4 Jan 05**

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

## 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**