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Hi Michael,</div>
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<br>
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Ok, let's leave the window size as is. </div>
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<br>
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We'll do a few more tests in the new year.</div>
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<br>
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Cheers,</div>
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Sasha<br>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Michael Dugger <dugger@jlab.org><br>
<b>Sent:</b> Friday, December 20, 2019 6:30 PM<br>
<b>To:</b> Alexander Somov <somov@jlab.org><br>
<b>Cc:</b> Richard Jones <richard.t.jones@uconn.edu>; Hall D beam working group <halld-tagger@jlab.org><br>
<b>Subject:</b> Re: [Halld-tagger] [EXTERNAL] beamline meeting on Monday cancelled</font>
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<div class="PlainText">Sasha,<br>
<br>
I want to keep the window to 150 samples. When we had 100 samples in the<br>
window it was difficult to get a plateau region that was large enough for<br>
the out-of-time subtraction.<br>
<br>
It is very good news that the rates will be manageable :)<br>
<br>
Take care,<br>
Michael<br>
<br>
<br>
> Hello Richard and All,<br>
><br>
> The easiest solution for the TPOL is to scale the read out, i.e.,<br>
> to use 4 fadcs instead of 2 (I've already installed these fadcs<br>
> some time ago, but they are currently not used). This should reduce<br>
> the dead time by a factor of two.<br>
><br>
> Another thing which we need to discuss with Mike is whether we<br>
> can decrease the TPOL window size to 100 samples (400 ns). Currently,<br>
> the window size is 150 samples.<br>
><br>
> At any rate, the TPOL seems not to be a showstopper.<br>
><br>
> Happy holidays !<br>
><br>
> Cheers,<br>
> Sasha<br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
> ________________________________<br>
> From: Halld-tagger <halld-tagger-bounces@jlab.org> on behalf of Richard<br>
> Jones <richard.t.jones@uconn.edu><br>
> Sent: Friday, December 20, 2019 11:43 AM<br>
> To: Hall D beam working group <halld-tagger@jlab.org><br>
> Subject: [Halld-tagger] [EXTERNAL] beamline meeting on Monday cancelled<br>
><br>
> Hello Beamers,<br>
><br>
> In view of the end of the run, and that in the end none of the planned<br>
> work related to the beam got done, I propose that we skip Monday's<br>
> meeting, and wait until after the new year to meet again. Issues related<br>
> to beamline hardware that have been discussed over the past couple of<br>
> weeks include<br>
><br>
> * ability to run hysteresis loop on the PS magnet<br>
> * ability to read out the TPOL at high rate, decreasing the width of<br>
> the readout window<br>
><br>
> On issue #1, I don't see how our group can contribute much, this is a<br>
> magnet power supply and cooling problem. I assume this is in good hands.<br>
> On issue #2, I would like to ask if Michael and Sasha can hammer out an<br>
> agreement on this between them, and get back telling us what they have<br>
> decided. If there are other things to discuss before the new year, please<br>
> raise them on this list by email.<br>
><br>
> Happy holidays to everyone!<br>
> -Richard Jones<br>
> _______________________________________________<br>
> Halld-tagger mailing list<br>
> Halld-tagger@jlab.org<br>
> <a href="https://mailman.jlab.org/mailman/listinfo/halld-tagger">https://mailman.jlab.org/mailman/listinfo/halld-tagger</a><br>
<br>
<br>
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