July 2, 2008 online meeting minutes: Difference between revisions

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       multiplicity (one cluster, two clusters, ... - need more outputs)
       multiplicity (one cluster, two clusters, ... - need more outputs)


       cluster identification algorithm
       cluster identification algorithm (central tower, 3x3 window with any number of towers etc)


EC: gamma (EC mip)
EC: gamma (EC mip)
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       h+- (ECmipxTOF)
       h+- (ECmipxTOF)


IC threshold will be 300-500MeV
IC threshold will be 300-500MeVas ADC value, we'll have discriminators so it will be amplitude, not charge


Q: how far lvds signal can be send ? we need at least 4 outputs from HxIC logic (2 for ICxH and 2 for IC)
Q: how far lvds signal can be send ? we need at least 4 outputs from HxIC logic (2 for ICxH and 2 for IC)
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Q: cluster finding algorithm in IC (high thres and one tower, or low thres and cluster ?)
Q: cluster finding algorithm in IC (high thres and one tower, or low thres and cluster ?)
Q: trigger timing ?????
Schedule: Ben may start in 2 weeks, will ask Chris if it is possible; we'll finilize our requirements during those 2 weeks;
system must be ready by the end of August; old CLAS L1 trigger logic can be removed if reproduced in new system without losing and functionality L1 old vs L1 new timing must be checked

Latest revision as of 10:39, 2 July 2008

present: Sergey Boyarinov, Pawel Turinski, Hovanes, Stepan, Sergey, Ben, Valery

1. one e in CLAS (ECxCC)

2. one pi0 (2 gammas) DVCS 2 clusters standalone

3. neutral trigger (2., or one in IC, one in CLAS)

4. one e in DVCS x Hodoscope [x something in CLAS, if rate too high]

Logic:

IC: gamma (IC only, or HbarxIC)

     e (IC only, or HxIC)
     multiplicity (one cluster, two clusters, ... - need more outputs)
     cluster identification algorithm (central tower, 3x3 window with any number of towers etc)

EC: gamma (EC mip)

     gamma(EC) x gamma(EC) (2 sectors)
     e (ECmipxCC)
     h+- (ECmipxTOF)

IC threshold will be 300-500MeVas ADC value, we'll have discriminators so it will be amplitude, not charge

Q: how far lvds signal can be send ? we need at least 4 outputs from HxIC logic (2 for ICxH and 2 for IC)

Q: do we need HbarxIC ?

Q: cluster finding algorithm in IC (high thres and one tower, or low thres and cluster ?)

Q: trigger timing ?????


Schedule: Ben may start in 2 weeks, will ask Chris if it is possible; we'll finilize our requirements during those 2 weeks; system must be ready by the end of August; old CLAS L1 trigger logic can be removed if reproduced in new system without losing and functionality L1 old vs L1 new timing must be checked