Core Minutes 3/19/2013

• ScienceTools (Jim) No news this week as Jim is on vacation.

• ROOT Workshop (Heather) Great workshop, probably one of the best she has attended. A nice mix of older more experienced ROOT users and new kids on the block. Clearly there was a focus on the upcoming ROOT 6, which has been delayed until late this year. Windows support will likely follow in v6.02 to be released six months later (when they return to their normal release schedule). The ROOT team is committed to providing support to v5.34 as the experiments make their transition. In particular they intend for ROOT v6 files to be readable by v5.34.

• Reprocessing (Tom G.) Nothing has happened in the past week. The reprocessing is still on track to go public April 16th. Leading up to that is a backfill and redo of the FITS files. There is an ongoing discussion about the interstellar emission model.

• Pass 8 (Tracy) Work continues on the exciting area of hit errors! Last week was spent resurrecting old 3 year old code (from the last hit error study), and run large muon and electron data sets to reconfirm the way those behaved. Stephan has set up to take distributions of these residuals by cluster, and ran a fancy fitting program (that crashes every 30 sec) but ultimately finished. Tracy took that output and ran it through the hit error model which showed this does make a big difference at high energy, for the PSF in particular. More work to see if this impacts Bill's analysis. More discussion at this week's P8 meeting.

  Johan has been doing timing studies on the reconstruction. Two things stand out: 1. Need to some soul searching about the cosmic ray tracking, which takes 15% of the total reconstruction time. 2. Outlier events which can drive data processing. The processing occurs in chunks and the run cannot finish until all the chunks are done.

  No new GR tags last week, and none expected this week.

• Core talk:

  • ROOT libs (Heather) Johann has been in contact with Joanne and Heather concerning issues with the ROOT library ordering when building ST. Clearly there is some clean up required, and we are looking into it.

  • Jenkins (Heather) Tony has set up some of the necessary machinery for Windows builds. So far the test builds fail. Tom will try to take a look at it.

  • FSSC concerns (Tom S) Dave Davis and company are concerned about the planned reorganization of the low level shared packages between ST and GR. Details were few - but all agreed that a meeting with the FSSC and SLAC folks is needed.

  • New Tape (Richard) 700 TB of tape has been ordered.

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