Core Minutes 7/17/2002  

Present:  Toby Burnett, Xin Chen, Marco Frailis, Riccardo Giannitrapani, Heather Kelly, Michael Kuss, Leon Rochester, Alex Schlessinger, Tracy Usher, Karl Young

• mcRoot file: (Riccardo) Riccardo provided a proposal to limit the size of the mcRoot file:
  http://www.fisica.uniud.it/~riccardo/research/glast/mctree.html 
  We would maintain the capability of storing data in "full tree mode" or "minimal tree mode".  
  In full tree mode we store:
  m_mcParticle
  m_originMcParticle
  m_mcParticleId
  m_originMcParticleId
  
  In minimal tree mode we store:
  m_mcParticleId
  m_originMcParticleId
  and m_mcParticle and m_originMcParticle are null
  
  Tracy felt this met his needs.  Riccardo will update the TDS classes this week.  Heather will then update the ROOT classes.

• Noise, ToT: (Toby)  Toby proposed that a new TDS class (TkrStrips) be created to store charge.  Toby noted that it is not yet necessary to make this persistent.  Leon wondered if this would meet the needs of the Bari Digi algorithm and Toby responded that he will be talking to the Bari group this week.
  

• Test Release: (Alex) 

• TKR: (Toby, Leon) Toby noted that the TkrFindAlg currently dominates the CPU time of Gleam.  Bill updated one of his classes to make it more efficient.  Since Bill had troubles checking in the code, Toby obtained the code and checked it in.  The changes seems to work, but needs to be validated by Bill.

• Random Number Generator: (Karl) We discussed the needs for the random number generator.  Karl has started to look at the Random Number Generator provided by Gaudi. Leon suggested that each package could set its own seed and store its final seed - to be used for the next event.  There seems to be no obvious reason why each package could not start with the same seed, though both Leon and Karl will continue to consider the issue.  Toby pointed out that we must store the state of the generator not just the seed - which should just be 3 doubles.  Karl will continue looking at the Gaudi Random Number Generator to see how this can be done.

• FRED: (Riccardo) Riccardo unleashed the FRED home page:
  http://www.fisica.uniud.it/~riccardo/research/fred/
  Riccardo encourages people to go ahead and download FRED and try it out.

• Comings and goings: Toby is at Udine this week. Richard and Heather are attending the CAL meeting at NRL Thursday and Friday this week.

  Action Items 

• Come up with a strategy for dealing with or avoiding incomplete identifiers in reduced geometry. (7/3) In progress (7/10)
• Alex will look into technical solutions (front-end script?) for controlling CVS commit access. (6/5) Doable; also circumventable. A back-burner project. (7/10)
• CAL geometry changes (5/8) Partly done. Tagged version of geometry incorporating new CsI crystal length; awaiting final numbers and drawings for additional changes. (7/3) Maybe forthcoming after CAL meeting next week? (7/10)

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J. Bogart Last Modified: 04-Aug-2004 15:41:26 -0700