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

[Omar Moreno]

Hi Jeremy,

Did you ever test your changes to the conditions DB using Monte Carlo?

--Omar Moreno

On Fri, Mar 11, 2016 at 11:22 AM, Bradley T Yale <btu29 at wildcats.unh.edu>
wrote:

> 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.
>
>
>
> ------------------------------
> *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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