[PRad] [EXTERNAL] Re: Fwd: Re: Beamline Configuration Drawings for PRAD II, X17 and TFF

[Dutta, Dipangkar]

Hi Ashot,
One more item is the  GEM support structure ( 2 GEM planes vs 3 GEM planes). I believe it should be possible to hold procurement just for this item until a final decision is made. Also, we may have to wait to finalize this part until all GEM parts have been procured.
Cheers
Dipangkar




From: PRad <prad-bounces at jlab.org> on behalf of gasparan via PRad <prad at jlab.org>
Date: Wednesday, November 20, 2024 at 10:04 AM
To: PRad mail group <prad at jlab.org>
Subject: [PRad] Fwd: Re: Beamline Configuration Drawings for PRAD II, X17 and TFF

   Hi All,

  As you see Bob wants to fix the engineering drawings for the
experiments. We are
  equally interested in finalizing this part to start the procurement and
construction
  phase.

  There are few items still not finalized on this part, let us try to
work on them before
  this Friday meeting, discuss them there and answer to Bob.

  1) veto scintillators thickness: we are testing them now but, it will
take another week
     if not more. I will contact Youri to see if this is important for
the engineering design
     part.
  2) Veto scintillator attachment tolerance: we are working on this item
but, it will need
     again a week or so. I will contact with Youri and Dipangkar to see
if a 0.5 mm tolerance
     is realistic (for both edges of a single scintilator). In all cases
we need survey ponts
     on this device.
     Weizhi, please make this item a priority before the weekend. If we
need one more meeting,
     I am ready for that.
  3) Changing the vacuum window from X17 to PRad_II experiments (as it
was shown by Bob).
     This is highly undesirable since it will involve not only the vacuum
part (that comes
     from the target change also) but, it will require a new survey of
the HyCal.
     If we decide to run PRad-II with the new (smaller) window, then the
Pb-glass part of the
     HyCal no longer in use (if even it is ready).
     Weizhi and Chao, please take one more look on this part to before
the weekend.

  4) What else is there to be discussed???

  Thanks,
  Ashot


-------- Original Message --------
Subject: Re: [PRad] Beamline Configuration Drawings for PRAD II, X17 and
TFF
Date: 2024-11-20 08:17
 From: Bob Miller via PRad <prad at jlab.org>
To: Eugene Pasyuk <pasyuk at jlab.org>, "prad at jlab.org" <prad at jlab.org>,
"pi0tff at jlab.org" <pi0tff at jlab.org>
Cc: Christopher Guthrie <guthrie at jlab.org>
Reply-To: Bob Miller <rmiller at jlab.org>


  Good Morning All,

  Are there any comments on the layout of PRad II and X17, or do we
assume the design is fixed and we can finalize the drawings and prepare
to order parts?

  Thanks,

  Bob Miller
  Hall B Lead Engineer
  (757) 822-9586

-------------------------

 From: Eugene Pasyuk <pasyuk at jlab.org>
Sent: Thursday, October 31, 2024 3:33 PM
To: prad at jlab.org <prad at jlab.org>; pi0tff at jlab.org <pi0tff at jlab.org>
Cc: Bob Miller <rmiller at jlab.org>; Christopher Guthrie
<guthrie at jlab.org>
Subject: Fw: Beamline Configuration Drawings for PRAD II, X17 and TFF

  Here are the beamline drawings for PRad/X17/TFF.
  Please review and give your feedback by November 15th.

-Eugene

-------------------------

 From: Christopher Guthrie <guthrie at jlab.org>
Sent: Thursday, October 31, 2024 14:47
To: Eugene Pasyuk <pasyuk at jlab.org>
Cc: Bob Miller <rmiller at jlab.org>
Subject: Beamline Configuration Drawings for PRAD II, X17 and TFF

  Eugene,

                  I have attached .pdf’s of the Preliminary versions
PRAD II, X17 and TFF Beamline Configuration Drawings.  Can you please
send these out to the individual run groups and request comments by
November 15th?

  Regards,

  Chris Guthrie

  Hall B Senior Mech. Designer

  (757) 269-6922
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