[Primexd] [GlueX] Target installation plan

[Shepherd, Matthew]

Hi Ashot,

> On Feb 28, 2019, at 11:58 AM, gasparan at jlab.org wrote:

> Therefore, it would be extremely important to take pictures of the FCAL
> insertion part and post on some place to see, before our meeting this
> evening.


I've posted pictures of the FCAL insert here:

https://logbooks.jlab.org/entry/3661206

It looked today exactly as it did 5+ years ago when these were taken.  (I'm surprised you haven't taken a peek at it before as it defines the acceptance of your detector.)

The Plexiglas monitoring system is held in the groove on the upstream end.  Anything of any density should be clear of the inner opening in the tube.  From the darkroom all that is visible is what appears to be a thin tedlar cover on the upstream end.  It is needed for a light seal or else there is light path from the hall into the darkroom via the beam pipe.

Matt

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Matthew Shepherd, Professor
Department of Physics, Indiana University, Swain West 265
727 East Third Street, Bloomington, IN 47405

Office Phone:  +1 812 856 5808
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