Minutes from meeting 13 October 2009
Q=Question
A=Answer
C=Comment
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Updates/Progress
Misc.:
Alice and Will C: Someone with karma/more familar with gamma maker should look into TMinuit library issue here: http://www.star.bnl.gov/HyperNews-star/protected/get/phana/388.html
Will C: No Michael,updates on filtering?
Alice Q: Ilya, were you able to run with full geometry yet?
Ilya A: No, adding "east endcap" back in only allows for EEMC only running.
EEMC Geometry Tests
Old:
Discussed yesterday at EEMC meeting
New:
Will and Hal C: Need to label "front" and "back" differently
Ilya C: Exclusion is done by not generating material. Materials added one at a time.
Will Q: What is there? Is it air? What?
Will Q: We compare upper left and lower right?
Ilya A: Yes
Hal Q: UVS refers to particle hitting first U, then V, then S from interaction point?
Ilya A: Yes
Hal C: Seems the wrong way. U plane in front - less hits?
Will C: A megatile layer is directly in front of shower max.
Ilya C: Shower is not so developed so less hits in first plane.
Will C: What bothers me is that 12 and 2 are not the same - same U/V cadence. Or is this because you just don't generate material and we don't know what is taking its place? Many agree.
Ilya C: v-Plane first sectors seem to agree better.
Will C: Should maybe try without LOW_EM option.
Scott C: For pions shower in front layer is narrower than one in back. j-all plot looks fine. This is what we really care about.
Ilya, Scott C: In geometry cvs there is no spacer, sectors 11 and 12 were the same? Or was there air in the spacer?
Hal A: In cvs air was in spacer location.
Jim C: The scale difference for u and v plots makes it hard to interpret. A 1-D plot would be helpful.
Hal C: Can Ilya send me geometry file with how you did these cases?
All: Energy plots looks good
Plans:
Will Q: Is there separation in towers?
Hal A: "wiggle" Option is there, not implemented. But isolation gap in eta is there. Not sure about phi.
Will Q: Do we need more documentation? Jason added lots of documentation in the form of comments. What about variables - i.e. LOW_EM option variables?
Will Q: What about TWIST/EGGS?
Hal A: EGGS is similar to Geant3. Worry about hadrons not doing a good job - what about FLUKA (sp?)? Seem to remember lots of parameters that dictate how particles are "tracked."
Jim C: Most backgrounds for gamma/jet are EM anyway.
Everyone: We seem stuck until full geometry is working.
Hal C: Someone should contact Jerome directly and see what we can do.
Alice C: Victor just replied to you.