sPHENIX HCal discussion

[Eric Mannel <mannel AT bnl.gov>]

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)