status of run selection

CATMay-27-2003

G. Bernardi LPNHE - Paris

Status of Run Selection

THIS TALK IS UNDER CONSTRUCTION

Using also p13.06 Post-shutdown data:

Runs from 172400 to 176843 (11 May)

55 pb-1 reconstructed

Study presented here is a sample of this dataset.

Compare with pre-shutdown data

CATMay-27-2003


METB (“no”CH) vs METC (withCH)

Pre-shutdown one entry/run.

METC-x

METB-y

METC-y

METB-y

METB is much more stable than METC. Main effect is removal of CH.

P13.04 – P13.06 data

Mean MET-x

Mean MET-y

CATMay-27-2003


METB and SETB (mean, RMS)


METC

METB

SETC

SETB

CATMay-27-2003


METx and y, < > and RMS


RMS-MET-x

<MET-x>

RMS-MET-y

<MET-y>

CATMay-27-2003


Variables for Run Selection


CATMay-27-2003


Good Run DefinitionOnly Runs with >= 1000 events are considered. (451 runs, p13.04/05)

RUNS from 162004 to 170374

Define the average shift: MET-xy = sqrt [ (<MET-x>)2 +(<MET-y>)2]

For a GOOD RUN:

1) Require MET-xy < 3 GeV

2) Require mean scalar ET between > 80 GeV.

3) Require stable RMS of METx and y (< 11 GeV in average)

RUN SELECTION released last week.

With full statistics, use MET-xy < 5 GeV in all files of a run, and MET-xy < 3.5 GeV in average.

RMS-xy < 16 GeV in all files of a run RMS-xy < 15 GeV in average.

CATMay-27-2003


Summary

New run selection on the way.

On the post-shutdow data, we see a slight degradation of the calo quantities, not a dramatic effect except in the range 176568 - 176591

We have about 55 pb-1 recoed / available after shutdown.

More studies needed. Next update, will be announced to the jetmet & CAT mailing lists.

.

status of run selection

Documents