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Calorimetry Group Meeting - Jan 18
On Tue, 15 Jan 2008, Zisis Papandreou wrote:
Dear all,
I think we have to make progress on the SoW with sensl. I went through the
contract and it looks much more resonable compared to the one before.
For the moment they leave the increase of PDE out, which I think is
reasonable and is what was suggested to Calr Jackson the last time.
Becuase having SiPMTs in hand which ave no gain variations, low noise and
cross talk, good electrical behaviour and timing structure woule be
extremely important. The increase in PDE can follow.
I like a lot that they will provide for quite some points test samples
which allow readout of the individdual 3x3 SiPMTs in the array.
I have only very little points for a discussion.
Page 6 point 3 WP1
---> after the results of Carl Zorn on gain variations vs bias voltage do
we consider a value of 10% inside one module adequate. I do not.
page 6
---> I would like a detailed list of what intensive electrical and optical
tests mean and which test addresses which problem
---> I see no mention of the integration of the temperature stabilisation
in the electronics.
the only other question are 5 arrays per setting enough, I would think so.
In addition ot the SoW with Sensl, we have to start thinking about
spcifications for the glue, lead and all other material that is needed to
build the modules.
Can we actually progress with the fiber specifications, Elton do we have a
list of measurments we need from the bicron and kuraray fibers we ordered.
That is all I have for the moment.
> Date: Tue, 15 Jan 2008 17:17:42 -0600
> From: Zisis Papandreou <zisis@uregina.ca>
> To: Hall-D Collaboration <halld-collab@dustbunny.physics.indiana.edu>
> Subject: [GlueX] Calorimetry Group Meeting - Jan 18
>
> Hello folks:
>
> I have two issues in this email.
>
> 1. Day of the week and time of our periodic Calorimetry Group
> Meetings. There is a suggestion from JLab to reserve Friday's at
> 10-11am for our meetings. This does not mean that we will have a
> meeting every week, it is just that we are trying to find a time that
> works for all active participants of our group, considering the 8
> time zones between Regina through the East Coast to Athens (9 in the
> summer, but we will revisit this at the time).
>
> Please let me know if this time slot does not work for you.
>
> 2. I would like to schedule a meeting this Friday, Jan 18, so please
> reply to question 1 right away. The meeting is tentatively scheduled
> for 10am, unless I hear an uproar. The main topic is the work
> towards the Calorimetry Document, but other issues can be discussed.
>
> http://www.jlab.org/Hall-D/software/wiki/index.php/January_18%
> 2C_2008_Calorimetry
>
> Cheers and thanks, Zisis...
>
> ---
> Dr. Zisis Papandreou | email: zisis@uregina.ca
> Department of Physics | tel. : (306) 585-5379
> University of Regina | tel. : (306) 585-4149
> Regina, SK S4S 0A2 | fax. : (306) 585-5659
> World Wide Web: http://www.phys.uregina.ca/sparro/zisis/
>
>
>
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