# Presentation: 247492

## Changing of the Guard

- April 1 – Aug 1 ,2002
- Elvin Harms
- Aug 1 – Dec 1, 2002
- David Johnson (Main Injector)  pager 266 - 7905
- Ron Moore (Tevatron) Deputy

- All Experimenters Meeting

- 5 September 2002

## Near Term Priorities

- The next several weeks
- Tevatron Instabilities
- Stacking Rate
- Stable Running-> Integrate Luminosity
- Parasitic and/or Pre-Shot studies to improve near term reliability
- Beyond
- Weekly integrated luminosity
- Push initial luminosity
- Support Recycler commissioning with pbars

- All Experimenters Meeting

- 5 September 2002

## Beams Week in Review

- Rocky Week (7/29 – 8/4)
- Accelerator Access (Tuesday)
- Accelerator Study Period (Wednesday)
- Three Stores
- Many Problems

- All Experimenters Meeting

- 5 September 2002

## Beams Week in Review

- All Experimenters Meeting

- 5 September 2002

## Beams Week in Review

- All Experimenters Meeting

- 5 September 2002

## Beams Week in Review

| Store # | Initial Luminosity | Duration | Termination | comments |
| --- | --- | --- | --- | --- |
| 1613 | 13.4  E30 | 20.0  hours | intentional |  LB parse,Long damper off 980,Tev RF trip, A1 lattice |
| 1616 | 19.5   E30 | 8.6   hours | Tev di/dt failure | Tev long. damper on @ 150 GeV; TEL off at beginning of store |
| 1622 | 18.15 E30 | 23.25 hours | intentional | No bunch length growth, 95 mA stack |

*Store Summary*

- All Experimenters Meeting

- 5 September 2002

## Beams Week in Review

- Many Problems
- Antiproton Stacking Rate
- Glitch on Feeder 47
- CUB/Booster LCW problems
- Debuncher Quad bus ground fault indication
- Main Injector vacuum problems
- Tevatron Cold compressor failure
- Booster RF Bias supply water leak

- All Experimenters Meeting

- 5 September 2002

## Beams Week in Review

- Room to Improve
- Stacking Rate
- Tevatron Instabilities
- Rapid turnaround

- All Experimenters Meeting

- 5 September 2002

## Initial Luminosity

- All Experimenters Meeting

- 5 September 2002

## Pbars to Collision

- All Experimenters Meeting

- 5 September 2002

## Protons to Collision

- All Experimenters Meeting

- 5 September 2002

## Peak Luminosity

- All Experimenters Meeting

- 5 September 2002

## Integrated Luminosity

- All Experimenters Meeting

- 5 September 2002

## Tevatron Summary

- Studies during dedicated studies period
- Orbit data up ramp and through squeeze
- Aperture scans through A0
- Orbit through F0 Lambertsons
- Tune drift at 150 GeV
- Tunes, coupling at 980 GeV

- All Experimenters Meeting

- 5 September 2002

## Tevatron Summary

- Current priority to understand difficulties with quenching over the week-end
- Intensity dependence
- Longitudinal emittance
- Transverse emittance blow-up
- Time at 150
- Tune, chromaticity, coupling

- All Experimenters Meeting

- 5 September 2002

## Pbar Summary

- Accumulator Access
- Worked on ARF1 system
- Changed power amplifier
- Drained water from cavity
- Worked on stack-tail cooling system
- Pbar start-up studies to restore stacking stacking rate
- Concentrated on phasing and calibration constants for ARF1
- Stack-tail cooling phasing – looks text book

- All Experimenters Meeting

- 5 September 2002

## Pbar Summary

- Accumulator Aperture – looks fine
- Current Priority to re-gain stacking rate
- Concentrate on ARF1 performance
- Further commission the return to stacking lattice

- All Experimenters Meeting

- 5 September 2002

## MI Summary

- Low Emittance (8 GeV) proton Coalescing
- Pbar feedforward compensation
- 150 GeV Longitudinal emittance

- All Experimenters Meeting

- 5 September 2002

## Schedule for this Week

- Collider operation
- Limited-focus studies required to restore reliable operation
- Orbit position through D0
- End of store studies (last 1 hr, with notification)
- CDF loss study
- Helix strength study in arc cell
- Synch light calibration

- All Experimenters Meeting

- 5 September 2002

## Schedule for this Week

- All Experimenters Meeting

- 5 September 2002