[Clas12_calcom] 10:00 analysis meeting today

[Francois-Xavier Girod]

I put the requirement on the trigger as per Valery's request to define how
the trigger efficiency should be measured.

If you guys can come up with a clear definition of what you call trigger
efficiency, I will be happy to re-produce it as per the cooking monitoring.
I can set id=11 and a reasonable chi2 cut, I think we also need to agree on
a momentum cut, that gives me a number of electrons in the numerator. How
do you define the number in the denominator?

On Fri, Jan 5, 2018 at 5:00 PM, Rafayel Paremuzyan <rafopar at jlab.org> wrote:

> Dear Fx,
>
> Are you using the RUN_config::trigger? for decoding the trigger? in
> reality as Ben mentioned this before,
> it captures very small portion of time window (few tens of ns) wrt readout
> window size (400 ns), while
> the vtp2 reports triggers with 4ns time resolution in a 400 ns time
> interval,
>
> However, if this skim is intended for trigger studies, I think will good
> to not ask anything about the trigger bit in the skim,
> probably just Id==11 will be good. I have skimmed the converted root files
> with only id=11 requirement, and in total for 2219 and 2220 I
> ended up with 70K events.
>
> Rafo
>
>
>
> On 01/05/2018 04:42 PM, Valery Kubarovsky wrote:
>
>> Dear FX,
>>
>> For trigger study we need to select events with at least one negative
>> time based track with good xi2, if you have such parameter.
>>
>> Regards,
>> Valery.
>>
>> On Jan 5, 2018, at 14:13, Francois-Xavier Girod <fxgirod at jlab.org> wrote:
>>>
>>>
>>> Dear all
>>>
>>> One number I found from skimming runs 2219 and 2220 with random trigger
>>> (negative outbending)
>>> The condition for skimming those events are
>>> - at least one sector with electron trigger bit
>>> - and either one particle with PID==11 or at least one negative time
>>> based track
>>> Out of 184M events I found 7.5k events passing both above cuts
>>>
>>> Best regards
>>> FX
>>> _______________________________________________
>>> Clas12_calcom mailing list
>>> Clas12_calcom at jlab.org
>>> https://mailman.jlab.org/mailman/listinfo/clas12_calcom
>>>
>>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://mailman.jlab.org/pipermail/clas12_calcom/attachments/20180105/9c6f56a7/attachment.html>