# Presentation: 123935

## Slide 1

## Overview

- Result beam-ex 2003 throughout the Retreat (especially Limitations session) – will not be address here explicitly again
- (Brief) recall of Beam Ex 2003 organization
- Run 2003 scheduling statistics
- Plans for summer/fall shutdown
- Beam Ex plans for Run 2004
- ...and beyond

## Beam Ex: motivation, goals

**GOALS**
- Improve machine **performance** (longer time scale than ‘now’ machine performance)
**Luminosity**, **upgrade** (RHIC-II)       _upgrades are not straightforward_
- Development of_ _beam **diagnostics** **techniques**
- Inter-lab **collaborations** (common goals, exploit synergies, exchange personnel, remote operations etc.)
**	****Beam experiments ******** operations**
- 	Examples runs 2001, 2003:
**IR correction**: skew quadrupole, sextupole
**Chromaticity** measurements via radial wiggle
**Octupoles** around transition
**PLL** high resolution tuning
**Tune scans** in collision working points

## Beam Ex Program run 2003

- AC dipole (twiss, coupling)		M. Bai
- Beam-beam				W. Fischer
- Chromaticity				S. Tepikian
- Collimation, diffusion 		A. Drees, R.Fliller
- Nonlinear 			 	V. Ptitsyn
- Instabilities				M. Blaskiewicz
- Pressure rise, e-cloud		S.Y.Zhang
- Stochastic cooling			M. Blaskiewicz
- Transition (alpha-1)			C. Montag
- _[www.rhichome.bnl.gov/AP/RHIC2003/BeamEx2003/](http://www.rhichome.bnl.gov/AP/RHIC2003/BeamEx2003/)_

## Beam Ex Organization

- _Proposals_ – **WEB based form**
- _Prioritization_ (**Accelerator Experiments Approval Committee**)
-      (met **2 times**, prior to **d-Au** and to **pp run**)
**12 h of beam time/week** during physics running (not during set-up and luminosity optimization time)
- WEB tools: Beam Experiments webpage, Beam Experiments  **electronic logbook**
**	****for Run 2004 ****BeamEx logbook**** integrated with operation logbook – but with advanced indexing capability for easy search into beam ex sessions is necessary**

## Beam Experiment time 2003

| period | Planned (h) | Scheduled (h) | Beam available (h) |
| --- | --- | --- | --- |
| first 5 weeks | 60 | 36 | 24 |
| d-Au run
(10 weeks) | 120 | 100 | 65 |
| pp run | 36 | 26 | 20 |
| total run 2003 | 156 | 126 | 85 |

- Scheduled/planned		~80 %
- Beam/planned			~55 %
- Beam/scheduled		~66%

- Useful figures
- for next year
- planning

- Regular scheduling meeting on Monday very good
- Time meeting, Mach-Ex meeting, Beam Ex meeting integration also
- worked (spin-off from retreat 2002)

## Summer shutdown activities

**Analysis of 2003 data**
- Use the AEAC worksheet on the WEB to collect **results from studies** – link to written documents or published papers
- Existence of **written analysis** will be a factor in experiment
- 	evaluation and scheduling next run
**RHIC Model (Offline********Online)**
- AC dipole, IR corr, diffusion, dynamic aperture, diagnostics, beam-beam etc. etc.
**SXF**, SXF **Filters**, interface to **MADX**, interface to **RE/online**
- Use **Beam Ex Meeting (Fri 11am)** as a forum
- Assemble **working group** on **Data Analysis and Modeling** – till run 2004 starts
_**First Meeting – Friday June 20**_

## Run 2004

**AEAC**
**Program** & coordinators similar to last year (with appropriate additions and inclusion of new arrivals)
- More **discussion/integration** with RHIC physics experiments/outside collaborators
- More **collaborative studies** – outside labs
- Start of experimental activity towards updates
- Limited start of** Class-2** experiments
- Limited tests of **Remote Ops**

## Beam Ex program for 2004

**Evolution** from 2003 with modifications
- Program will be worked out during the **summer** (and discussed at Friday meetings)
-     contributions from  AEAC, CAD personnel and experimenters, RHIC experiments, outside collaborators
**Workshop on Beam Experiments** in early October Workshop last year was useful, and  could be again useful to define the program and support/focus collaborative work.
- 	Format similar to last year, 2 days, at or near BNL

## And beyond

**Workshop on Commissioning & Experiments** in summer/fall 2004 (organized by Pilat, Bruning)
- RHIC commissioning
- Tevatron, HERA (re-commissioning)
- Experience from b-factories, “smaller” machines
-  SNS, LHC, LC commissioning plans, strategies
- Will seek ICFA endorsement
- Remote operation (ICFA working group)
- Standing collaborations , “class-2 type experiments