# Presentation: 316453

## Punch List Changes (little emphasis today)

- Ring-of-Fire Effect on Data
- Run Quality Database News

- ADM Meeting
- August 15th, 2003

- Tom Diehl

## Punch List

- Can be found at:
- http://www-d0.fnal.gov/computing/data_quality/punch/punch_list.txt
- Four active items:
- Item #14: Date: August 4th. Muon normalization.
- Item #13: Date: July 31st. Run RecoCert on 179332 to see what Ring-of-welding looks like.
- Item #11: Date: July 17th. The z=0 vertex thing in Run 178737. Active.
- Item #4: Date: April 11th. Readout Errors in SMT from end of Jan. (2003) shutdown to ~ Mar. 10th effected the reconstruction. Runs sould be graded as "Not perfect but analyzable". Can this be seen in RecoCert plots? Call List: HTD. Action: Ron Lipton is still worried about this July 17, 2003. Resolved Date and Comment:

- Tom Diehl

## “Run II Ring-of-Fire” (PL #13)

- On 7/29/03 ~16:00 we began to have intermittent, sharp spikes in calorimeter L1 trigger rates.
- The problem became intolerable.

- CEM(2,6)

- CJT(3,5)

- Tom Diehl

## “Ring-of-Fire”

- Trigger eta spike at ieta = -7 in EM trig plot.
- The problem appeared in the precision readout as well as in the trigger. We could see it in the event display as a line of charge at constant eta, wrapping around all of phi.

- Tom Diehl

## “Ring-of-Welding”

- Dan Edmunds identified the problem as the one so-named. We asked John Najdzion, the duty technician, for a hint.  While heading downstairs to talk to the shift, he spotted the welder working on DAB3.
- The welder obligingly toggled the welder trigger and the shift watched the perfectly-correlated effect on the rates.
- The D0 detector (calorimeter included) is not supposed to be susceptible to the  goings-on in the building.
- Isolated grounds
- Filters on the detector power input.
- Welding is suspended until this is solved.
- Also, this suggests the possibility of further gains in noise reduction.
- List of welding times on RQ page:
- /www-d0/WWW/docs/computing/data_quality/meetings/welding-Jul-31-2003.doc

- Tom Diehl

## Ring-of-Welding Effect on Data

- Effects the EC more than the CC

- Run 178332
- Run 178333

- 178332 is RoW run

- Tom Diehl

## Ring-of-Welding Effect on Data

- More events with none!?
- Spike in electrons (all) at ||=+-1.5ish

- Run 178332
- Run 178333

- Tom Diehl

## Ring-of-Welding Effect on Data

- Tight electrons aren’t so effected.

- Run 178332
- Run 178333

- Tom Diehl

## Ring-of-Welding Effect on Data

- Jets (no cuts) look quite different in RoW run.

- Run 178332
- Run 178333

- N

- ET

- eta

- phi

- emf

- chf

- hotf

- h90

- F90?

- Tom Diehl

## Ring-of-Welding Effect on Data

- Jets (std cuts) aren’t so different?!
- But aren’t exactly the same, are they?

- Run 178332
- Run 178333

- Tom Diehl

## Ring-of-Welding Effect on Data

- RoW run has big tail. Needs a log plot to show it clearly BUT you can glean it from apparent norm. diff.

- Run 178332
- Run 178333

- Tom Diehl

## Ring-of-Welding Effect on Data

- Muons seems rather unaffected.

- Run 178332
- Run 178333

- Tom Diehl

## Ring-of-Welding Effect on Data

- Tracks show RoW spike at 0 tracks per event

- Run 178332
- Run 178333

- Tom Diehl

## Run Quality Database

- Results for June 2003: ~22pb-1
- Muon: 0.2% Bad, 99.8% Reasonable
- JET/MET: 62% analyzed, 13% of total Bad, the rest Good.
- CTT: 8% Bad, the rest Reasonable or Good.
- SMT: not reporting  lately?
- Results for July 2003: ~22pb-1
- Muon: 1% Bad, 99% Reasonable.
- CTT: 65% analyzed, 8% Bad, the rest is R or G.
- CFT: Michael Freidman, SangJoon Lee, Marj Corcoran, Paul Padley  (Rice U.) & Drew Alton (U. Mich.) are putting together RQD database info for all runs since April, 2002.  MF to talk next Tuesday at the CFT meeting.

- Tom Diehl

## Run Quality Database

- OR of Bad JET/MET & Muon & SMT & CFT & CAL

- Muon is completed
- JET/MET mostly complete (except June & July)
- SMT incomplete lately (needs help?)
- CFT on it’s way

- 2003

- Tom Diehl

## Summary

- Punch List Changes: None
- 4 active items
- More work in  attempting to correlate cal noise is worthwhile
- Effect of Ring-of-Welding on the data was highlighted.
- Run Quality Database update indicates both good and bad news.
- Next week M. Sanders and the Online Effort.

- Tom Diehl

## RecoCert Results: Run 178737 (PL #11)

- Most histograms looked good or typical.
- Tracking plot has some evidence of excess z=0 vertices. I was under the impression that this sort of thing should be somewhat rare now.
- Believed to be due to triggers without collisions (zero-bias and  calorimeter noise).
- Not yet removed from Punch List.

- Tom Diehl

## Muon Normalization Problem (PL#14)

- The match up of Muon Local Tracks in run 179263 (and other runs) with run 178722? doesn’t look right.
- Number of muon local tracks per event is OK, though. The normalization of the comparison doesn’t look right.
- Sent mail to Melanson, Mulders, self.

- Tom Diehl