# Presentation: 258540

## RHIC Machine/Detector Planning Meeting9 May 06

_**Agenda**_
**SPECIAL TOPICS:**
**Schedule for the 62 GeV pp run**
**What is preferred order of beam species for RUN07? – first thoughts**
**Scheduling Physicist (Brown) - Scheduling issues**** **
**Experiment Progress/Issues - STAR, PHENIX, (BRAHMS)**
**Jet Target Progress/issues - (Makdisi) **
**Machine Issues - (Ptitsyn)**
**AGS beam polarization progress report/polarimeter status – (Huang)**
**RHIC Polarimeters (Bravar) – issues**
**RHIC Beam Experiments – (Pilat)**
**RCF (Throwe) – issues **

**Planning Meeting Web Site****: http://www.c-ad.bnl.gov/esfd/RMEM_06/rhic_planning.htm**

## Experiment Goals (in progress) 

-                     ___s_              _Pol. Config._         _Recorded L_     _Delivered L_     _Pol_          _weeks_
- PHENIX:    200 GeV    Radial                   4-7 pb-1            10-17 pb-1       ≥ 50%      3-4#
-                     200 GeV    Longitudinal          10 pb-1                 30 pb-1       ~ 60%          7
-                     62.4 GeV   Transverse            0.6 pb-1                 1.4 pb-1         any            2
-                       *22 GeV                                   4 nb-1                  10 nb-1
- STAR:        200 GeV    Transverse            5  3 pb-1                 15 pb-1       ≥ 50%      ~ 4
-                    200 GeV     Longitudinal          10 pb-1                 30 pb-1       ≥ 50%       ~7
-                    62.4 GeV    Transverse            0.5  pb-1               0.5  pb-1      ≥                 2
- BRAHMS: 62.4 GeV    Transverse           0.85 pb-1                1.4 pb-1       ~ 50%         2
- Not in present plan
- # with 50-60% pol, end with 4 weeks of operation or 4-7 recorded pb-1, whichever comes first

## STAR Transverse Goal

**STAR Transverse Goal**
**(15 pb****-1**** delivered)**

**STAR transverse pol begins**

## PHENIX longitudal Goal

**PHENIX longitudal Goal**
**(30 pb****-1**** delivered)**

**“****11” weeks in Physics  mode**

**PHENIX long pol begins**

## STAR longitudal Goal

**STAR longitudal Goal**
**(30 pb****-1**** delivered)**

**“****11” weeks in Physics  mode (STAR)**

**STAR long pol part 2 begins (plan)**

**STAR long pol part 1 ends**

## 5/9/06

## 5/9/06

**5/9/06**

## 5/9/06

**5/9/06**

## 5/9/06

## 5/6/06

## 5/8/06

**5/8/06**

## RHIC Run 6  - For Discussion

**Plan A (present plan): **
- 5 Jun: end 200 GeV run, begin 22 GeV test run
- 6 Jun: end 22 GeV test run, begin 62 GeV run
- 20 Jun: end 62 GeV run, begin 500 GeV development
- 26 Jun:  end RHIC operations with beam
**Plan B (proposed):**
- 5 Jun: end 200 GeV run, begin 22 GeV test run
- 6 Jun: end 22 GeV test run, begin 500 GeV development
- 12 Jun: end 500 GeV development, begin 62 GeV run
- 26 Jun:  end RHIC operations with beam
- _   _

**5/9/06**

## RHIC Run 6  - For Discussion

**A short history (from my Tuesday meeting notes):**
** **
_**Date**_**                           **_**62 GeV Start Date**_** **
** **
**through 4/18             5/28    (with usual caveats)**
**4/25                            6/1      (added 4 days to schedule as a result of                                  unscheduled shutdown - flag the we needed to "revisit the schedule")**
**5/2                              6/6      (added another 4 days to the schedule, maxing out possible calendar days for RHIC Run 6 and scheduled the 22 GeV test run before 62 GeV run - raised issue that we should consider moving the 62 GeV run to the end to minimize the possible negative impact of the Accelerator Conference on the 500 GeV development run)**
**5/9                              6/6 vs 6/12**
- _   _

**5/9/06**

## RHIC Machine/Detector Planning MeetingArchive

## PHENIX Radial Goal (min)

**PHENIX Radial Goal (min)**
**10 pb****-1**** delivered**

**PHENIX long pol begins**

## As of 30 Apr 2006

## RHIC Run 6 as run/revised plan

- 1 Feb – Cool-down begins
- 7 Feb – 1st beam in blue ring
- 12 Feb – 1st beam in yellow beam
- 5 Mar – Machine Physics Mode declared (4.6 weeks into run)
- 8 Mar – **PHENIX** in Physics Mode – radial pol (5 weeks into run – on schedule)
- 12 Mar – **STAR** in Physics Mode – long pol (5.6 weeks into run)
- 12 Mar – begin 11.0 weeks of s=200 GeV pp (0.6 weeks behind schedule)
- 6 Apr – **STAR** switch to trans pol
- 14 April – unscheduled shutdown (incr. power use at ~50% of full operations)
- 21 April – unscheduled shutdown ends – lost ~ 7 days
- 22 April –**PHENIX** back on (lost 8 days)
- 24 April – **STAR** back on (lost 10 days)
- 26 Apr – **PHENIX** completed radial polarization, switched to longitudal
- 10  May – **STAR** switch to longitudal polarization (plan)
- 5 Jun  – end 11.0 weeks s=200 GeV pp, begin s=22 GeV development
- 6 Jun - begin setup s=62 GeV pp – add **BRAHMS**
- 20 Jun – end 2 week s=62 GeV pp, begin s=500 GeV development
- 26 Jun – end s=500 GeV development, begin warm-up to LN2
- 29 Jun – RHIC Cryo switch to LN2 complete, end 21.1 weeks of cryo operation
- _   _

**5/9/06**

## The 14.5 week pp “physics” plan, Run6

_****__**s  = 200 GeV/c (1**__**st**__** 11 weeks)**_
_****__**s  = 62.4 GeV/c (next 2 weeks)**_
- 2 weeks physics
- STAR Transverse
- PHENIX Transverse
- BRAHMS Transverse
_****__**s  = 500 GeV/c (last 1 week)**_
- Machine Development
_**0.5 week contingency, use to be determined**_

## RHIC Run 6 Original Plan

- 1 Feb – Begin cool-down
- 8 Mar –Physics Mode for machine and experiments (5 weeks into run)
- 8 Mar – begin 11 weeks of s=200 GeV pp
- 24 May – end 11 weeks s=200 GeV pp
- 24 May begin setup s=62 GeV pp
- 7 Jun – end 2 week s=62 GeV pp
- 7 Jun – begin 1 week s=500 GeV pp development
- 14-18 Jun – Contingency (end 14.5 weeks “Physics”)
- 18 Jun – begin cyro warm-up
- 21 Jun – RHIC Cryo warm-up complete, end 20.0 weeks of cryo operation

## RHIC Run 7 – first look at possible run plan

- PHENIX
- Long Au-Au run at s=200 GeV/n
- pp development, especially for s=500 GeV
- STAR
- d-Au at s=200 GeV/n
- pp development

## 11 physics weeks at 200 GeV, (20 weeks cryo operation)

_**11 physics weeks at 200 GeV, (20 weeks cryo operation)**_

**STAR/PHENIX Goals - Transverse**

**STAR Goal - Longitudal**

## 2 physics weeks at s = 62.4 GeV

_**2 physics weeks at **__****__**s = 62.4 GeV**_

**PHENIX and BRAHMS Goal**

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