sPHENIX HCal discussion

["Biggs, John C" <biggs AT bnl.gov>]

We can minimize the power disruption to the test equipment to a day or two. That is not a problem. And I have two options for John's test location that I will go over with him when he gets back from holiday.  --cb

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From: sPHENIX-HCal-l <sphenix-hcal-l-bounces AT lists.bnl.gov> on behalf of Eric Mannel <mannel AT bnl.gov>
Sent: Friday, December 20, 2019 9:19 PM
To: sphenix-hcal-l AT lists.bnl.gov <sphenix-hcal-l AT lists.bnl.gov>
Subject: Re: [Sphenix-hcal-l] More space in 912

 

Chris-

I agree that we need a well thought out plan, but should also move
quickly so as not to delay testing of oHCal modules 2-6 once all the
interior cables  and boxes arrive.  The other important task that we
need to do sooner then later is to mock up the iHCal.  We have a few
days/weeks while we wait for the new end plates, but once they arrive,
we will need to have  a place to start the assembly and see if things
fit. I saw today that the iHCAL prototype has moved to 912.  A
discussion last week with Richie already identified a few potential
modifications, and I would not be surprised if there are more.   A few
minutes (or days) after that we will want to power up the module as best
we can to confirm that there is no heating issue with the electronics
(the SiPMS after damage are another thread of discussion).

So as you go forward in planning, keep in mind  not only the disruption
to electrical infrastructure, but also disruptions to working in general
and the movement/relocation of equipment and detectors.

Eric

On 12/20/19 8:48 PM, Pontieri, Chris wrote:
> Hello
> The original conversation that I had with Brian Streckenbach was about moving interior shielding blocks behind hi-bay door 15.  The reason behind this was to open up more square footage for storage of the outer hcal sectors.
> It appears now that CA-D is open to removing much more shielding than originally discussed, which I agree is a good thing, but will require quite a bit more planning.  I will reach out to Brian on Monday and we can start to formulate a plan moving forward.  The best case scenario would be zero disruption of electrical power so the HCAL group can continue with testing the sector electronics.  I will keep all parties involved well informed of the plan we develop moving forward.
>
> If anyone has any specific concerns, feel free to email me directly and I can see to it that we address them appropriately.
>
> Chris Pontieri
> cpontieri AT bnl.gov    
> 631-344-5038
>
> -----Original Message-----
> From: sPHENIX-HCal-l <sphenix-hcal-l-bounces AT lists.bnl.gov> On Behalf Of Stefan Bathe
> Sent: Friday, December 20, 2019 5:45 PM
> To: Haggerty, John <haggerty AT bnl.gov>
> Cc: sphenix-hcal-l AT lists.bnl.gov
> Subject: Re: [Sphenix-hcal-l] More space in 912
>
> Hi John, All,
>
> Thanks for the info!
> Oops, really?  When I last discussed this with Chris P. on Tuesday, the plan was to propose to Brian to move only the shielding blocks that don’t have utility lines running on top.  So I didn’t anticipate this.  Maybe Chris could send an explanation to the list why the power loss might be an implication of this?  (Sorry, Chris, I had to miss yesterday’s planning meeting due to end-of-semester business.)  If that’s really the case, this work would really have to be well coordinated in order not to impact us too much.
>
> Regards,
> Stefan

--
Eric J. Mannel, Ph.D.
sPHENIX Group
Physics Dept.
Brookhaven National Laboratory
631/344-7626 (Office)
914/659-3235 (Cell)

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