[Lad_hallc] [EXTERNAL] Re: LAD meeting Monday April 22 at 11am

[Holly Szumila-Vance]

We had some issues with the GEMs in Hall A when we think some low momentum protons (<1 GeV) are now in our spectra and causing some highly ionizing events where we had to reduce the gain in order to save the chambers… I was thinking that we may be in a similar situation with our proton spectra, but I wanted to see what makes it into our acceptance. I think if we start with a very, very low gain and slowly increase, then we would be fine.

From: Axel Schmidt <axelschmidt at gwu.edu>
Date: Tuesday, April 23, 2024 at 2:31 PM
To: Lucas Harald Ehinger <ehingerl at mit.edu>
Cc: Holly Szumila-Vance <hszumila at jlab.org>, Florian Hauenstein <hauenst at jlab.org>, "lad_hallc at jlab.org" <lad_hallc at jlab.org>
Subject: Re: [Lad_hallc] [EXTERNAL] Re: LAD meeting Monday April 22 at 11am

I can take a look at the old simulation to see what we have... Actually would be a useful comparison to whatever Lucas generates.

Can you clarify what you are looking for? Are you talking about the momentum distribution for signal protons, or the rates and energy spectrum for all proton singles?

-Axel

________________


On Apr 23, 2024, at 06:06, Lucas Harald Ehinger <ehingerl at mit.edu> wrote:

I don't have this pre-prepared, but I could generate this plot later today.

________________________________
From: Lad_hallc <lad_hallc-bounces at jlab.org<mailto:lad_hallc-bounces at jlab.org>> on behalf of Holly Szumila-Vance <hszumila at jlab.org<mailto:hszumila at jlab.org>>
Sent: Tuesday, April 23, 2024 6:02:04 AM
To: hauenst at jlab.org<mailto:hauenst at jlab.org> <hauenst at jlab.org<mailto:hauenst at jlab.org>>; lad_hallc at jlab.org<mailto:lad_hallc at jlab.org> <lad_hallc at jlab.org<mailto:lad_hallc at jlab.org>>
Subject: Re: [Lad_hallc] LAD meeting Monday April 22 at 11am

Hi,


Can someone post a plot with the range of proton momenta that we will pass through our detectors? We’ve had some very ….um I will call it insightful…..experiences in Hall A with protons in the GEMs recently.


Thanks,
Holly


From: Lad_hallc <lad_hallc-bounces at jlab.org<mailto:lad_hallc-bounces at jlab.org>> on behalf of Florian Hauenstein <hauenst at jlab.org<mailto:hauenst at jlab.org>>
Date: Friday, April 19, 2024 at 10:41 PM
To: "lad_hallc at jlab.org<mailto:lad_hallc at jlab.org>" <lad_hallc at jlab.org<mailto:lad_hallc at jlab.org>>
Subject: [Lad_hallc] LAD meeting Monday April 22 at 11am


Dear all,


We will have our LAD meeting Monday April 22 at 11am at the usual zoom https://mit.zoom.us/j/97008559046<https://urldefense.proofpoint.com/v2/url?u=https-3A__mit.zoom.us_j_97008559046&d=DwMFAg&c=CJqEzB1piLOyyvZjb8YUQw&r=asg_QFxP0OVXyAZ19zktE0kdc2lZ630Ih8VdeKCUm6w&m=9dgKJS97PlKfw7kg62BOwN4WlxG63N3kxdYLVLSVzDias98dXn9MGkUyxuRvG3-r&s=t-8DHL7-lVMW3Cj_6-CdA2HTV7qBFHjQH5MO-gg6ldY&e=>.


 Agenda:

  *   EPJA updated paper and response to referee

  *   GEM update

  *   LAD bar update

  *   Other updates


Best,

Florian


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