After examining the Z invariant mass peak calculated using the L2W data stream with the offline calibration applied, it seemed like there was a problem.

I ran the usual calibration code over the L2W data produced for the W measurement.

The MIP peaks plotted in the attachment come from the L2W data.

The pdf posted here has a good overview of the computation of the slope for ea

For run 9, BSMD performance was monitored by looking at non-zero-suppressed events.  The code is archived at /star/institutions/mit/wleight/archive/bsmdMonitoring2009/.  This blog page wi

Attached are slopes plotted for run 10171078 which was towards the end of Run 9.

Here is a note from Oleg Tsai (and attached file "wiresup.pdf" below) concerning source

STAR/blog/ogrebeny/2009/jun/08/bsmd-energy-scale-uncertainty

The 2008 Calibraton has been uploaded into the database. I was able to find calibration coefficients for 4420 towers.

As Matt says that the maximum status is 255, I have dropped the old status bit 5 as (it was unused).  Also, I have loosened the dead strip cuts based on looking at module 55 (see pages 203 or

Edited on 5/1 to reflecte new status bit assigments for bits 3 and 4.

The current BSMD status bits are as follows:

After looking more closely at the crate 1 channels I was forced to make serious revisions to status bit 2 from the previous update.  The new status bit 2 test is as follows:

BSMD Pedestals and Status for Run 9 pp 500 Data (June 2009, uploaded to offline DB)

The BSMD status analysis for the 500 GeV data proceeds as follows:

I use two datasets to QA BSMD channels: zero-suppressed data from L2W events (fills 10383-10507) and non-zero-suppressed data from online monitoring (fills 10436-10507) (note that at the moment I a

Summary of process used to change the HV for 2009 in BTOW:HV Files: Version indicates interation/mapping (numeral/letter)

We set the HV = 800 Volts for all channels which have been masked out, repaired, or otherwise had problems in 2008.  I have examined the spectra for these channels and give pdfs with each of t

We have taken two sets of 1M pp events at sqrt(s)=500 GeV. For future reference, the statistical error on the slopes is typically in the range of 3.7%.  I give a plot of the