[Rgc] more cooked runs in HBT for polarization checks

[Christopher Keith]

Harut,
The sudden jump in the NMR readings are not real.  The original calibration for the NMR gave low results, but we have reason to suspect its accuracy. James Maxwell later adjusted it so the NMR would roughly agree with Gregory Matousek’s inclusive DIS analysis.

https://logbooks.jlab.org/entry/4133528

Since then the NMR and online trigger asymmetry have been tracking one another pretty closely.  If we have time, we’ll try to get a better NMR calibration tomorrow.

Chris


________________________________
From: Rgc <rgc-bounces at jlab.org> on behalf of Harut Avagyan via Rgc <rgc at jlab.org>
Sent: Sunday, February 19, 2023 10:40 PM
To: silvia at jlab.org <silvia at jlab.org>
Cc: rgc at jlab.org <rgc at jlab.org>
Subject: Re: [Rgc] more cooked runs in HBT for polarization checks

Dear All,

The TPol meaurement based on the DIS using the latest runs is shown in

https://userweb.jlab.org/~avakian/tmp/all-rgc-run-dep-17574-17604.nh3.pdf

It looks like while the NMR values (crosses) were lower before, now are
higher than the actual polarization measured from DIS.

Best,

Harut

On 2/19/2023 7:11 AM, Silvia Niccolai via Rgc wrote:
> Hello all,
> more cooked runs (HBT) are available for polarization checks:
> /volatile/clas12/rg-c/production/dst/8.5.0_HBT/
> Best regards,
> Silvia
>
>
> _______________________________________________
> Rgc mailing list
> Rgc at jlab.org
> https://mailman.jlab.org/mailman/listinfo/rgc
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