# Presentation: 715969

## Week in Review: 06/02/03 –06/09/03

**  ****Keith Gollwitzer – FNAL**

- Stores and Operations Summary
- Standard Plots

- All Experimenters' Mtg - 9 Jun 03

## Stores Summary

| Store | Initial
Lum.
(E30) | Deliv’d
Lum. (nb-1) | Termination | Duration
(hr) | Comments |
| --- | --- | --- | --- | --- | --- |
| 2636 | 20.8 | 621 | Intentional | 15.3 | Stack of 112mA; Not full 53MHz for 1 transfer |
| 2642 | 31.2 | 976 | Intentional | 17.6 | Stack of 174mA (shot 123mA) |
| 2644 | 28.7 | 171 | Abort | 2.0 | Stack of 169mA; ARF1 trip for 2 transfers
B4 Fridge excursion led to unstable fridge |
| 2646 | 26.5 | 923 | Intentional | 22.6 | Stack of 111mA |
| 2658 | 28.2 | 378 | Abort | 5.2 | Stack of 121mA
QBS Controller failure |
| 2662 | 24.2 | 725 | Intentional | 16.2 | Stack of 101mA |
| 2665 | 29.9 | 838 | Intentional | 14.6 | Stack of 157mA |
| 2667 | 27.4 | - | On Going | - | Stack of 127mA |

- K. Gollwitzer - FNAL

- All Experimenters' Mtg - 9 Jun 03

## Integrated Luminosity for the Week

**Integrated Luminosity for the Week**

- Recovery from shutdown

- Ice balls
- Lead failure
- Leads too cold

- B4 Fridge stability - Abort

- Maintenance (await stack)

- QBS controller Failure - Abort

- E4 wet engine replaced

- K. Gollwitzer - FNAL

- All Experimenters' Mtg - 9 Jun 03

## Summary (1)

- Lost Stores
- B4 Fridge excursion of cooldown valve led to an unstable fridge condition which led to abort. May been seeing this problem and have been investigating (1st store lost to these excursions).
- QBS Controller failed on NO A/C bit; aborted store
- Cool to too Cold
- 3 ice balls found after power outages and recovery
- Water is used to regulate temperature (problems last weekend)
- 1 ice ball due to nitrogen leak; able to reseal
- Leads to cold
- Fafa

- K. Gollwitzer - FNAL

- All Experimenters' Mtg - 9 Jun 03

## Slide 5

- K. Gollwitzer - FNAL

- All Experimenters' Mtg - 9 Jun 03

## Summary (2)

- TeV operation not quite recovered
- Losses:
- 150GeV when opening the helix
- Start of ramp (more than usual)
- Pbars at flattop; tune adjustments fix
- Lifetime is quite a bit smaller than early May
- TeV maintenance
- ~12 hours of 3-bumps to locate apertures
- Have done quick check of 1⁄2 of TeV ring
- C46 bump causes changes in tunes; strong sextupoles
- Tunes up the ramp

- K. Gollwitzer - FNAL

- All Experimenters' Mtg - 9 Jun 03

## Tevatron Losses

**Tevatron Losses**

- Total Protons
- Total Current
- Total Pbars
- 2nd set of Pbars

- Store 2642

- Store 2662

- Proton Load

- Proton Load

- Pbar Load

- Pbar Load

- Open Helix

- Ramp

- Ramp

- 1st Cogging

- K. Gollwitzer - FNAL

- All Experimenters' Mtg - 9 Jun 03

## Summary 3

- Lost Stack of 60mA
- Debuncher vacuum leak closed vacuum valves
- Other Pbar Problems
- Lithium Lens LCW valve problem
- Breaker at AP0 trip affecting AP2 and AP3 supplies
- 95 degree LCW pump tripped
- Water leak on A:A1S12 fixed during vacuum repair
- Busy Proton Source with
- Change outs of LRF5 and LRF1
- MH2 regulation
- MKS04 Kicker; cable termination
- ORBMP water flow valve
- Pulse shifter
- Continuous tuning of LINAC and Booster
- SY120: 1 short and 1 longer beam period

- K. Gollwitzer - FNAL

- All Experimenters' Mtg - 9 Jun 03

## Slide 9

- K. Gollwitzer - FNAL

- All Experimenters' Mtg - 9 Jun 03

## SY120: Last week “spraying into P3”

- P1 and P2 wires

- P3 wires

- K. Gollwitzer - FNAL

- All Experimenters' Mtg - 9 Jun 03

## SY120 Progress: P1+P2+P3 into transfer hall

- Made use of E4 fridge replacement to have ~6hrs of beam

- P3 wires

- K. Gollwitzer - FNAL

- All Experimenters' Mtg - 9 Jun 03

## Slide 12

- K. Gollwitzer - FNAL

- All Experimenters' Mtg - 9 Jun 03

## Slide 13

- K. Gollwitzer - FNAL

- All Experimenters' Mtg - 9 Jun 03

## Brief Summary

- The week
- Many problems (some recovery related?)
- 86hrs of stores
- TeV maintenance when
- 2 stores aborted early
- 1 lost stack
- SY120 beam progress
- FY03 total is 156pb-1; 11 weeks to shutdown
- Goal for this week
- Stack and Store
- Will do at least one between stores TeV maintenance period(s)
- Reduction of strong sextupole at C46
- Continue 3-bump aperture scan of TeV

- K. Gollwitzer - FNAL

- All Experimenters' Mtg - 9 Jun 03