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Hi Whit,</div>
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See answers below in bold:</div>
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Bob Miller</div>
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Hall B Lead Engineer</div>
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(757) 822-9586</div>
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<div id="divRplyFwdMsg" dir="ltr"><span style="font-family: Calibri, sans-serif; font-size: 11pt; color: rgb(0, 0, 0);"><b>From:</b> Armstrong, Whitney R. <warmstrong@anl.gov><br>
<b>Sent:</b> Wednesday, October 16, 2024 5:15 PM<br>
<b>To:</b> alert collaboration <alert_collaboration@jlab.org>; Raphael Dupre <raphael.dupre@ijclab.in2p3.fr>; Bob Miller <rmiller@jlab.org><br>
<b>Subject:</b> Re: [Alert_collaboration] [EXTERNAL] News & ALERT Meeting</span>
<div> </div>
</div>
<div style="font-size: 11pt;">Hi Bob,<br>
<br>
Thanks for the update.<br>
I have a few comments and questions regarding the Survey and Alignment Procedure:<br>
<br>
- Is the "Target Location Repeatability" test performed after the full "Target Initial Installation" with leak check procedure? Previously we had done some survey steps before the leak check.<br>
<span style="color: rgb(0, 0, 0);"><b>Yes, this is done after the leak checks are complete.</b></span></div>
<div style="font-size: 11pt;"><span style="color: rgb(0, 0, 0);"><b><br>
</b></span>- For the "Leak Test after Installation into ALERT Detector", could we add on a measurement of the depressurization after a few hours? This might be useful to know later. <br>
<b>Yes, we can increase the leak down test to 3 hours after step 12.</b></div>
<div style="font-size: 11pt;"><br>
- Is it possible to add to the Target Location Repeatability Test an initial measurement of the downstream window OD without the Target Support Block Halves in place yet?</div>
<div style="font-size: 11pt; color: rgb(0, 0, 0);"><b>No, the target droops too much without the support halves.</b></div>
<div style="font-size: 11pt;"><br>
With and without pressure? I am curious how much movent occurs due to the Target Support Block Halves.<br>
<br>
- I am concerned about the Target Location Repeatability tests being done without something protecting the HDC. Is there a difference between 15 psi and 68 psi in terms of straw deformation? Maybe adding a few more pressures between 0 and 68 psi to my previous
suggestion would help answer that. That is, if the straw is as rigid at 15 psi as it is at 68, perhaps the repeatability tests only need to go 15 psi? (Note 15 psi is just a randomly chosen low pressure).</div>
<div style="font-size: 11pt;"><b>The request to survey under pressure came from the ALERT group. I will change the pressure to whatever is suggested by the ALERT group.</b></div>
<div style="font-size: 11pt;"><b><br>
</b></div>
<div style="font-size: 11pt;"><b>Regards,</b></div>
<div style="font-size: 11pt;"><b>Bob<br>
</b><br>
Thanks,<br>
Whit<br>
<br>
________________________________________<br>
From: Alert_collaboration <alert_collaboration-bounces@jlab.org> on behalf of Bob Miller via Alert_collaboration <alert_collaboration@jlab.org><br>
Sent: Wednesday, October 16, 2024 7:22 AM<br>
To: alert collaboration; Raphael Dupre<br>
Subject: Re: [Alert_collaboration] [EXTERNAL] News & ALERT Meeting<br>
<br>
Hi Raphael, Please find the attached procedures for your review. Thanks, Bob Miller Hall B Lead Engineer (757) 822-9586 From: Alert_collaboration <alert_collaboration-bounces@ jlab. org> on behalf of Raphael Dupre via Alert_collaboration<br>
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This Message Is From an External Sender<br>
This message came from outside your organization.<br>
<br>
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Hi Raphael,<br>
<br>
Please find the attached procedures for your review.<br>
<br>
Thanks,<br>
<br>
<br>
Bob Miller<br>
Hall B Lead Engineer<br>
(757) 822-9586<br>
________________________________<br>
From: Alert_collaboration <alert_collaboration-bounces@jlab.org> on behalf of Raphael Dupre via Alert_collaboration <alert_collaboration@jlab.org><br>
Sent: Wednesday, October 16, 2024 7:19 AM<br>
To: alert collaboration <alert_collaboration@jlab.org><br>
Subject: [Alert_collaboration] [EXTERNAL] News & ALERT Meeting<br>
<br>
Hello everyone,<br>
<br>
I wanted to let you know that the team in JLab has repaired the broken<br>
wire and cleaned up the chamber. All HV sectors were tested and all of<br>
them reached 1800V with very low current. They will be reinstalling<br>
everything in the coming days.<br>
<br>
To discuss this and more, we will meet tomorrow at the usual time 9 am<br>
(ANL) / 10 am (JLab) / 4 pm (IJCLab).<br>
<br>
Connection link:<br>
<a href="https://urldefense.proofpoint.com/v2/url?u=https-3A__ijclab.zoom.us_j_98179063617-3Fpwd-3DNjVTaisxY1d6eTVjM25LNFlMUW9QZz09&d=DwIDaQ&c=CJqEzB1piLOyyvZjb8YUQw&r=xvIrZb1p8HoRayKD1Sz8zPzqi4-qHfiBCWqgj3oMbOQ&m=jqIOZ45OEhkRx1o3nS63AbGKh3NIgymKvMZBGjrimLmrbAXLCwATDS9PEeoYjZxI&s=OMObZtn50ENrelZw5FxUXIe8LeCqt0-F720qiTq8MVE&e=" id="OWAeba68c6f-d9ec-80bd-7ec0-eff9883be2d0" class="OWAAutoLink" data-auth="NotApplicable">https://urldefense.proofpoint.com/v2/url?u=https-3A__ijclab.zoom.us_j_98179063617-3Fpwd-3DNjVTaisxY1d6eTVjM25LNFlMUW9QZz09&d=DwIDaQ&c=CJqEzB1piLOyyvZjb8YUQw&r=xvIrZb1p8HoRayKD1Sz8zPzqi4-qHfiBCWqgj3oMbOQ&m=jqIOZ45OEhkRx1o3nS63AbGKh3NIgymKvMZBGjrimLmrbAXLCwATDS9PEeoYjZxI&s=OMObZtn50ENrelZw5FxUXIe8LeCqt0-F720qiTq8MVE&e=</a><br>
<br>
Wiki page:<br>
<a href="https://clasweb.jlab.org/wiki/index.php/ALERT_Meeting_2024<https://urldefense.proofpoint.com/v2/url?u=https-3A__urldefense.us_v3_-5F-5Fhttps-3A__clasweb.jlab.org_wiki_index.php_ALERT-5FMeeting-5F2024-5F-5F-3B-21-21G-5FuCfscf7eWS-21ZqDsRb5MbRXIdurnb6ju-2D6pTrtrM0CRW0pIrJfVHNH3llHfQqMUzMyCAo1VBgWCXAxq6iayyrCml-2DjWGPmZQ7k7xh0aC-24&d=DwIGaQ&c=CJqEzB1piLOyyvZjb8YUQw&r=plE8x1Qj6-oBUv4DJULncvm2rlHV-MV7JFc6UEKBC1w&m=FXyBF1kqucQczs0aLe6nYgSFCEJaLFxfcoqzlmJde19-vOP8YkKUvIn51WklNISX&s=RZFBMFkc971pimPQHCa7W5olqcBfIxH96UKSpqNKfNg&e=" id="OWA3f54d0bb-5a41-116c-d549-87fa552b36e0" class="OWAAutoLink" data-auth="NotApplicable">https://clasweb.jlab.org/wiki/index.php/ALERT_Meeting_2024<https://urldefense.proofpoint.com/v2/url?u=https-3A__urldefense.us_v3_-5F-5Fhttps-3A__clasweb.jlab.org_wiki_index.php_ALERT-5FMeeting-5F2024-5F-5F-3B-21-21G-5FuCfscf7eWS-21ZqDsRb5MbRXIdurnb6ju-2D6pTrtrM0CRW0pIrJfVHNH3llHfQqMUzMyCAo1VBgWCXAxq6iayyrCml-2DjWGPmZQ7k7xh0aC-24&d=DwIGaQ&c=CJqEzB1piLOyyvZjb8YUQw&r=plE8x1Qj6-oBUv4DJULncvm2rlHV-MV7JFc6UEKBC1w&m=FXyBF1kqucQczs0aLe6nYgSFCEJaLFxfcoqzlmJde19-vOP8YkKUvIn51WklNISX&s=RZFBMFkc971pimPQHCa7W5olqcBfIxH96UKSpqNKfNg&e=</a> ><br>
<br>
Cheers,<br>
Raphael<br>
<br>
--<br>
Raphaël Dupré<br>
Laboratoire de Physique des 2 Infinis Irène Joliot-Curie<br>
CNRS - IN2P3<br>
Université Paris-Saclay<br>
<br>
<br>
_______________________________________________<br>
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