# Presentation: 731686

## Week in Review: 06/09/03 –06/16/03

**  ****Keith Gollwitzer – FNAL**

- Stores and Operations Summary
- Standard Plots

- All Experimenters' Mtg - 16 Jun 03

## Stores Summary

| Store | Initial
Lum.
(E30) | Deliv’d
Lum. (nb-1) | Termination | Duration
(hr) | Comments |
| --- | --- | --- | --- | --- | --- |
| 2665 | 29.9 | 838 | Intentional | 14.6 | Stack of 157mA |
| 2667 | 27.4 | 686 | Intentional | 12.3 | Stack of 127mA; End of Store studies |
| 2671 | 28.0 | 865 | Intentional | 14.7 | Stack of 174mA |
| 2673 | 31.5 | 905 | Intentional | 15.5 | Stack of 146mA; End of Store studies |
| 2676 | 27.5 | 484 | Abort | 7.0 | Stack of 151mA; Quench via heater discharge |
| 2684 | 30.0 | 918 | Intentional | 15.2 | Stack of 106mA |
| 2686 | 32.8 | 1040 | Intentional | 16.1 | Stack of 138mA |
| 2689 | 28.0 | 784 | Intentional | 15.3 | Stack of 133mA ; lost 5th pbar transfer |
| 2692 | 26.1 | - | On Going | - | Stack of 122mA |

- K. Gollwitzer - FNAL

- All Experimenters' Mtg - 16 Jun 03

## Integrated Luminosity for the Week

**Integrated Luminosity for the Week**

- End of store studies
- Access
- Beam Maintenance Studies

- Beam Maintenance Studies

- End of store studies
- Beam Maintenance

- Quench (heater discharge)
- Beam Maintenance
- Power Glitch & Recovery
- Access
- Beam Maintenance

- Access

- K. Gollwitzer - FNAL

- All Experimenters' Mtg - 16 Jun 03

## Summary (1)

- Lost Store; Lost Stack; Lost Power
- Heater discharged causing quench at D0 low betas; HFU card replaced
- A:LQ power supply burnt out termination; 90mA lost
- Glitch; great effort to recover timely
- Other problems
- LRF2 driver tube replaced
- KRF1 ignatron tube replaced
- QPS308/QPS307  control card & bulk supply
- Booster RF trips and water
- B:MH2 regulation
- D1 Refrig excursion
- Continual tuning of proton source

- K. Gollwitzer - FNAL

- All Experimenters' Mtg - 16 Jun 03

## Summary (2)

- TeV beam maintenance
- End of store studies
- Tunes at 980GeV and losses
- Separator strength and helix position
- Between stores beam maintenance studies
- Reduction of S6 strength; not able to decouple on helix orbits
- Center beam in aperture; change in 10 locations
- Find magnetic center of S6 elements
- Isolate effect of cogging on proton lifetime
- Lattice measurements at Flat top and low beta
- Investigation of S6 strength
- Full restore and checkout after power glitch
- Orbit smoothing

- K. Gollwitzer - FNAL

- All Experimenters' Mtg - 16 Jun 03

## Summary (3)

- Some Good News
- After Glitch recovery and orbit smoothing, some progress in returning to better shots and stores
- Still work to go; there will be more between stores beam maintenance studies
- Burle is to have sent tube today!
- Will have to prepare here; next **new** tube is being scheduled
- SY120 studier was able to coexist with 150GeV beam maintenance studies and make progress

- K. Gollwitzer - FNAL

- All Experimenters' Mtg - 16 Jun 03

## SY120 Progress: Beam to SY Dump!!!!

- MI Beam

- SY Dump

- Losses

- Work to be done: fix diagnostics; optics; slow spill;
-     orbit & losses; run with TeV @ 980GeV
- Beam has gone 1.7km; still 1.3km to experiments

- K. Gollwitzer - FNAL

- All Experimenters' Mtg - 16 Jun 03

## Slide 8

- K. Gollwitzer - FNAL

- All Experimenters' Mtg - 16 Jun 03

## Slide 9

- K. Gollwitzer - FNAL

- All Experimenters' Mtg - 16 Jun 03

## Brief Summary

- The week
- 4 periods of TeV beam maintenance studies
- 91hrs of stores
- Quench lost store; power supply failure lost stack; power glitch
- SY120 beam to dump!
- FY03 total is 161pb-1; 10 weeks to shutdown
- Goal for this week
- Stack and Store
- Will do at least one between stores TeV maintenance period(s)
- Tunes and chromoticities up ramp through squeeze
- 8hr Tue access (while in store): new RR BPM preamp installation {+ other maintenance work in MI, Booster and Linac tunnels}

- K. Gollwitzer - FNAL

- All Experimenters' Mtg - 16 Jun 03