[Clas12_dileptons] HTCC and track sector studies

[Nathan Baltzell]

Valery,

Yes, all detectors except HTCC already have an explicit same-sector requirement with the track, so adding it for (1) HTCC-track or (2) HTCC-PCAL should be 100% identical.

-Nathan

On Jun 29, 2022, at 8:44 AM, Valery Kubarovsky <vpk at jlab.org<mailto:vpk at jlab.org>> wrote:

Nathan,
This story started with the trigger validation.
When we select events with PID=-11we found a lot of events when HTCC signal was not in the same sector as PCAL/ECAL.
Valery
________________________________
From: Clas12_dileptons <clas12_dileptons-bounces at jlab.org<mailto:clas12_dileptons-bounces at jlab.org>> on behalf of Nathan Baltzell <baltzell at jlab.org<mailto:baltzell at jlab.org>>
Sent: Wednesday, June 29, 2022 08:02
To: Rafayel Paremuzyan <rafopar at jlab.org<mailto:rafopar at jlab.org>>
Cc: clas12_dileptons at jlab.org<mailto:clas12_dileptons at jlab.org> <clas12_dileptons at jlab.org<mailto:clas12_dileptons at jlab.org>>
Subject: Re: [Clas12_dileptons] HTCC and track sector studies

you require sector of the track to be the same as the sector of HTCC,
while for trigger studies we required sector of HTCC to be the same as the sector of PCal

Those should give exactly the same result, since truly sectored detectors are already required to be in the same sector as the track.

-Nathan


On Jun 28, 2022, at 10:36 PM, Rafayel Paremuzyan <rafopar at jlab.org<mailto:rafopar at jlab.org>> wrote:

Hello Stapan,

thank you for slides.

To me pid cuts are pretty reasonable.
I assume exclusivity cuts are |MM2| < 0.1 GeV^2  AND Q2 < 0.1 GeV^2

when Richard will post his slides, we can have a look into his cut values.

However one thing that I think is different is that you require
sector of the track to be the same as the sector of HTCC,
while for trigger studies we required sector of HTCC to be the same as the sector of PCal and EC_in (nothing
required on track sector).
I am not sure how much difference this will make (if any), but if it is not too much of work, could
you require PCal and HTCC sectors to be the same, instead of track and HTCC sectors.

Rafo

p.s. also could you make the comparison plot in a linear scale.
________________________________
From: Clas12_dileptons <clas12_dileptons-bounces at jlab.org<mailto:clas12_dileptons-bounces at jlab.org>> on behalf of Stepan Stepanyan <stepanya at jlab.org<mailto:stepanya at jlab.org>>
Sent: Tuesday, June 28, 2022 3:33 PM
To: clas12_dileptons at jlab.org<mailto:clas12_dileptons at jlab.org> <clas12_dileptons at jlab.org<mailto:clas12_dileptons at jlab.org>>
Subject: [Clas12_dileptons] HTCC and track sector studies

Hello all,

Attached are a few slides I put together to study the HTCC-track sector mismatch. Yes, there are positrons with odd sector combinations, especially for p<4.8 GeV. But in the end, it makes no difference for my invariant mass distribution.

Stepan

_______________________________________________
Clas12_dileptons mailing list
Clas12_dileptons at jlab.org<mailto:Clas12_dileptons at jlab.org>
https://mailman.jlab.org/mailman/listinfo/clas12_dileptons

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://mailman.jlab.org/pipermail/clas12_dileptons/attachments/20220629/ea1223cb/attachment-0001.html>