Re: [BLAST_SHIFTS] cc efficiency

From: zhangchi (zhangchi@general.lns.mit.edu)
Date: Thu Nov 07 2002 - 04:27:07 EST


Hi Tancredi,

I used your cuts, I can get comparable efficiency to yours for LC1, RC1,
but for LC0, RC0 I could not. I think I am not using the runs with correct
triggers. Which runs are good for CC efficiency calibration?

Chi

On Thu, 7 Nov 2002, zhangchi wrote:

>
> Hi Tancredi,
>
> I just ran cc_eff.C on run 2602 which was taken last night with field off
> and 45mV threshhold.
>
> If I take only the center two TOF paddles, the efficiency numbers are:
> left box 0 with TOF 1: 54% with TOF 2 62%
> left box 1 with TOF 4: 76% with TOF 5: 73% with TOF 6 71%
>
> right box0 with TOF 1 31% with TOF 2 47%
> right box1 with TOF 4 54% with TOF 5 52% with TOF 6 41%
>
> The numbers are under pretty generous cuts that take into account any
> coinc's listed in Cuts.C, namely, protons are searched for in paddles
> higher than 6. I will look into more strict cuts.
>
> Also, I need to apolagize to Pete, I made changes in TBLScRecon but was a
> bit sloppy with maintaining the codes. It cuased problems in his macros
> and caused delay in his progress.
>
> Chi
>



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