[Solid_hgc] how to access HGC detector

[Gary Swift]

Hi Garth,


I don't think mounting to the magnet cone is necessarily ruled out, however that may not be part of the best mounting solution. Hopefully, the detector can inserted & mounted (securely), in the magnet extension ("house"), from it's outer shell (on the rails). The prototype shell concept should still be valid, additional internal stiffeners might (or not) be needed. Mounting the spherical mirror, exclusively, from the "top" structure of the shell may be necessary. Simplifying the bottom curved plate is desirable.


Gary



________________________________
From: Garth Huber <huberg at uregina.ca>
Sent: Wednesday, January 18, 2017 6:22 PM
To: Zhiwen Zhao; Gary Swift
Cc: Derek Gervais; Rory Evans; solid_hgc at jlab.org
Subject: Re: [Solid_hgc] how to access HGC detector

Thanks Zhiwen for this very useful information.  We have a question for Gary:

Derek and I were looking at this engineering note yesterday, and to us it
appears that the HGC will be suspended via rails along its outer circumference,
and no direct contact with the cone.

1) If this is correct, does this require any changes to the HGC design you made?
2) I assume this will allow us to simplify the design of the curved plate on the
bottom of the prototype, as we discussed last week.  Is this correct?

Regards,
Garth

> Zhiwen Zhao wrote:
> Dear All
>
> To clarify some questions about how to access HGC detector we had in
> the meeting
> yesterday, here is some info from Whit at HallA engineering
> https://urldefense.proofpoint.com/v2/url?u=https-3A__hallaweb.jlab.org_wiki_index.php_SoLID-5FEngineering-5FIntegration-5Fand-5FCAD-23Whit.27s-5Fnote-5Fon-5F2016.2F02.2F26&d=CwICaQ&c=imBPVzF25OnBgGmVOlcsiEgHoG1i6YHLR0Sj_gZ4adc&r=L-gA87-25vcRFYvOpKmwxN-g_-UWGwzS8riFr_hzKko&m=EJjWMIpiZvBCheW57QwsUfEuvBfwMuklStMqoUS8bJA&s=6GCPoZgCQIrO7qa2L-aJAgVNOWRBlrUy4HEJEx_-UNE&e=
>
> We hope to setup new meeting with HallA engineering soon to further
> address
> these questions and concerns.
> Stay tuned.


--
Dr. Garth Huber, Dept. of Physics, Univ. of Regina, Regina, SK S4S0A2, Canada.
tel: 1-306-585-4240. fax: 1-306-585-5659.
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