# Presentation: 725076

## Week in Review: 06/16/03 –06/23/03

**  ****Keith Gollwitzer – FNAL**

- Stores and Operations Summary
- Standard Plots

- All Experimenters' Mtg - 23 Jun 03

## Stores Summary

| Store | Initial
Lum.
(E30) | Deliv’d
Lum. (nb-1) | Termination | Duration
(hr) | Comments |
| --- | --- | --- | --- | --- | --- |
| 2689 | 28.0 | 784 | Intentional | 15.3 | Stack of 133mA ; lost 5th pbar transfer |
| 2692 | 26.5 | 861 | Intentional | 15.0 | Stack of 122mA |
| 2694 | 30.0 | 1038 | Intentional | 17.3 | Stack of 118mA ; End of Store studies |
| 2702 | 28.6 | 439 | Abort | 5.2 | Stack of 141mA 
 Quench |
| 2705 | 22.0 | 650 | Intentional | 13.2 | Stack of 107mA
Lost 1/3 pbars at start of squeeze |
| 2707 | 27.8 | 485 | Abort | 6.2 | Stack of 123mA ; Two 5th pbar transfer
Quench  |
| 2710 | 23.6 | 924 | Intentional | 17.0 | Stack of 132mA ; 2nd pbar transfer lost in P1 |
| 2712 | 29.3 | 1080 | Intentional | 17.6 | Stack of 107mA |
| 2715 | 37.2 | - | On Going | - | Stack of 158mA |

- K. Gollwitzer - FNAL

- All Experimenters' Mtg - 23 Jun 03

## Integrated Luminosity for the Week

**Integrated Luminosity for the Week**

- Experiment Access

- Beam Maintenance

- End of store studies
- Beam Maintenance Studies

- Abort

- Experiment Access

- Abort

- Beam Maintenance

- Recycler Driven  Access

- K. Gollwitzer - FNAL

- All Experimenters' Mtg - 23 Jun 03

## Summary (1)

- Lost Stores
- Modified quench protection cards were installed recently to reduce noise in circuit
- 2 stores aborted due to these cards
- Unmodified cards re-inserted into system; others have been operating for awhile with no problems.
- Problems with pbars
- Lost beam at MI flattop; no beam when kicker fired
- Abort/extraction sequence out of order?
- Unstacked on two consecutive supercycles
- Pbar sequencer did not see unstacking event
- Lost beam in P1 line during transfer from ACC to MI
- Ramp table corruption lost 30% of pbars during squeeze
- TeV ramp state incorrect and lost beam while at 150GeV on helix orbits

- K. Gollwitzer - FNAL

- All Experimenters' Mtg - 23 Jun 03

## Summary (2)

- MI Tunnel/Booster/Linac access
- 1 house of the new RR BPM system installed; currently calibrating/commissioning system
- Examined Booster MH2 magnets to determine fit to power supply
- Minor RR vacuum work
- Upgraded antiproton source debuncher cavity tuning system controls
- Other problems
- Water temp problems with proton source debuncher cavity
- Air system leak for MI and MiniBooNE valves
- Various RF station problems in Booster and MI
- NUMI studies in MI affecting uptime of MI RF system
- Various cable and power supplies of the antiproton source
- Much tuning of Linac and Booster

- K. Gollwitzer - FNAL

- All Experimenters' Mtg - 23 Jun 03

## Summary (3)

- TeV Studies
- End of Store
- Commission different aspect of the E17 Schottkey
- Calibration of emittance (SL & FW) by scraping beam away
- Beam Maintenance
- Tunes up ramp and through squeeze
- Implemented 4 bumps
- Reduction of chromoticities on helix orbits (150GeV on up)
- Work on coupling
- 150GeV Lifetime studies intent in determining gas pressure
- Some good
- Burle tube arrived
- SY120 successfully sent beam while TeV at 980GeV

- K. Gollwitzer - FNAL

- All Experimenters' Mtg - 23 Jun 03

## TeV E17 Schottkey

- New electronics cleaned up signal and now allow chromoticities to be measured.
- Calibrated successfully against known changes to chromoticity
- From TeV group

- Can gate on certain bunches

- K. Gollwitzer - FNAL

- All Experimenters' Mtg - 23 Jun 03

## Better Lifetimes & Less Losses

**Better Lifetimes & Less Losses**

**June 12 **
**to **
**June 22**
- Total Protons
- TeV Beam Current
- Total Pbars
- Pbar Bunch 13
- (2nd transfer)

- K. Gollwitzer - FNAL

- All Experimenters' Mtg - 23 Jun 03

## Slide 9

- K. Gollwitzer - FNAL

- All Experimenters' Mtg - 23 Jun 03

## Slide 10

- K. Gollwitzer - FNAL

- All Experimenters' Mtg - 23 Jun 03

## Brief Summary

- The week
- 3 periods of TeV beam maintenance studies
- 108hrs of stores
- Two aborted stores
- Several problems of getting pbars to collisions
- FY03 total is 168pb-1; 9 weeks to shutdown
- Goal for this week
- Stack and Store

- K. Gollwitzer - FNAL

- All Experimenters' Mtg - 23 Jun 03