[Sbs_gems] [EXTERNAL] Re: GEn-RP (E12-17-004) officially postponed until early 2023

[Michael Kohl]

Hi all,

I agree! The quality of the experiment will benefit dramatically without the rushing! And everything that's learned and developed during GMn is directly applicable to GEn-RP. And all of the Npol analysis can be developed before the run.

Also, even though GEp is not yet scheduled, it will be much more of an immediate sequence, which makes that experiment better, too.

--Michael



________________________________
From: David Hamilton <david.j.hamilton at glasgow.ac.uk>
Sent: Wednesday, November 24, 2021 1:56 PM
To: Brad Sawatzky <brads at jlab.org>
Cc: Kondo Gnanvo <kagnanvo at jlab.org>; William Tireman <wtireman at nmu.edu>; Bogdan Wojtsekhowski <bogdanw at jlab.org>; Michael Kohl <kohlm at jlab.org>; Andrew Puckett <andrew.puckett at uconn.edu>; Stephen Wood <saw at jlab.org>; Gnanvo, Kondo (kg6cq) <kg6cq at virginia.edu>; Liyanage, Nilanga K (nl8n) <nl8n at virginia.edu>; Evaristo Cisbani <cisbani at jlab.org>; Eric Fuchey <efuchey at jlab.org>; sbs_gems at jlab.org <sbs_gems at jlab.org>
Subject: [EXTERNAL] Re: GEn-RP (E12-17-004) officially postponed until early 2023

Hi Brad,

Many thanks for the update. There is no doubt we will do a much better measurement in 2023. Given the difficulties with GMn I feel that this is definitely the right decision.

Cheers,
David

> On 24 Nov 2021, at 18:08, Brad Sawatzky <brads at jlab.org> wrote:
>
> Hi folks,
>
> A new beam schedule has been released that has been updated to
> accommodate the slow start to the SBS program in Hall A. (See attached.)
>
> The upshot is that the GEn-RP (E12-17-004) has been officially postponed
> until early 2023 (following the SBS Pol He3 program).  So, we will
> not be installing the GEn-RP detectors in late-Dec/early-January.  They
> will remain under test in the ESB and EEL/125 (where they are presently
> staged).
>
> *NOTE*
> This does *not* mean that development of the SBS GEMs and GEN-RP
> polarimeter is paused for a year.  The plan is to install all of these
> detectors in Hall A and run them parasitically with beam, using the full
> production readout system, during the Pol He3 program.  This time will
> be invaluable to work out the remaining issues in DAQ, VTP firmware, and
> GEM operation so we can really hit the ground running after the
> cryotarget system is reinstalled.
>
> I will be happy to answer any questions you may have.
>
> All the best,
> -- Brad
>
> --
> Brad Sawatzky (he/him), PhD <brads at jlab.org> -<>- Jefferson Lab/ Hall C/C111
> Ph: 757-269-5947  -<>-  Fax: 757-269-5235  -<>- Pager: brads-page at jlab.org
> The most exciting phrase to hear in science, the one that heralds new
>  discoveries, is not "Eureka!" but "That's funny..."   -- Isaac Asimov
> <Web20211122.0.pdf>
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