[Hps-analysis] Too few Pass6 Moller events in MC

[Bradley T Yale]

For clarity, it looks like tpass6 actually used 'hps-distribution-3.6-20160229.015546-43-bin.jar' not the '3.6 release', but the same run number problem happens for that jar as well.



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From: hps-software at SLAC.STANFORD.EDU <hps-software at SLAC.STANFORD.EDU> on behalf of Bradley T Yale <btu29 at wildcats.unh.edu>
Sent: Friday, March 11, 2016 1:24 PM
To: hps-software at SLAC.STANFORD.EDU; hps-analysis at jlab.org; Sebouh Paul
Subject: Re: Too few Pass6 Moller events in MC


Investigating further, this may be the problem:


Apparently, the most recent jar (3.6 release) always sets the run number to '0', even when specifying it in the command with -Drun=5772.

All jars that were checked before the problematic 3.6.1 appear to assign the correct run number of 5772.

It should be checked if this also affects data reconstructed with 3.6, or only Monte Carlo. In any case, this would definitely be a thing to fix.


-Brad

________________________________
From: hps-software at SLAC.STANFORD.EDU <hps-software at SLAC.STANFORD.EDU> on behalf of Bradley T Yale <btu29 at wildcats.unh.edu>
Sent: Thursday, March 10, 2016 7:06 PM
To: hps-software at SLAC.STANFORD.EDU; hps-analysis at jlab.org; Sebouh Paul
Subject: Too few Pass6 Moller events in MC


I know this was supposed to be the "final pass",

but it looks like there are far too few Moller events being readout in Pass 6 Monte Carlo.


Looking further into this, it is because the >3-hit clusters in Pass 6 are getting decimated BEFORE the trigger for some reason (see attached plots), and so they no longer pass the cluster hit count threshold. These were made using exactly the same filtered SLIC events, and the same steering file with the same apparent thresholds in the GTP clusterer and trigger.

The difference must be elsewhere in the drivers themselves.


These plots compare

hps-distribution-3.5-20151218.205540-15-bin.jar

with

hps-distribution-3.6-bin.jar


both using the 'EngineeringRun2015TrigSingles1_Pass2.lcsim' steering file.


A more recent 3.5 jar (1/25/2016) gives a similar number of events as Pass 4, and so the key difference must be with 3.6.


-Brad

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