sPHENIX tracking discussion

[Itaru Nakagawa <itaru AT bnl.gov>]

Hi Ming,

Thank you for proposing this meeting. I would be more than happy to talk about it. I'll be in BNL from Nov.20th noon - Nov.24th. Since this is thanks giving holiday week, I don't think I will be swamped by too many meetings.

Regards,

-itaru

On 2016/11/14 4:23, Ming Liu wrote:

Hi Itaru, Tony and all,

 

It would be very helpful if we can have a phone meeting when Itaru is at BNL to discuss the integration issues. Walt and I had a quite extensive discussion with ALICE engineer Corrado Gargiulo about the mechanical structures, particularly the Service End Wheels.  

 

Cheers,

Ming  

-- 

Ming Xiong Liu

P-25, MS H846                 TEL: 505-667-7125(Office) 

Physics Division                        631-344-7821(BNL)

LANL                                           630-840-5708(FNAL)

Los Alamos, NM 87545  FAX: 505-665-7020

 

From: <sphenix-tracking-l-bounces AT lists.bnl.gov> on behalf of "Frawley, Anthony" <afrawley AT fsu.edu>
Date: Saturday, November 12, 2016 at 4:21 AM
To: "sphenix-tracking-l AT lists.bnl.gov" <sphenix-tracking-l AT lists.bnl.gov>
Subject: [Sphenix-tracking-l] Minutes of November 11, 2016 sPHENIX tracking meeting

 

 

Hi All,

 

Here are the minutes of this morning's short tracking meeting.

 

Cheers

Tony

 

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

 

We had a discussion about intermediate tracker configuration, following up on the discussion at the October 21 meeting.

We discussed at the previous meeting how to avoid conflicts between the INTT (and its readout) and the MAPS readout cone. One way is to reconfigure the MAPS readout so that the large fan out is reduced in size, leaving room for the INTT. A possibility that was also discussed was to read out the INTT at one end only, possibly with a channel count reduction by doubling the pitch of the strips.

Itaru said that the single side readout option for the INTT would be challenging and risky. The length of the HDI readout path would be doubled, and that may exceed technical limits. Technically it would be a big deal, and may require searching for a new manufacturer for the HDI. Re-configuring the MAPS readout fan is the strongly preferred option.

Itaru is going to BNL at the end of next week specifically to discuss the support structure/integration for the INTT. He will be there for a week. The plan is to Identify an engineer and bring him up to date. After Itaru leaves, his colleagues at BNL will work with the engineer.

Itaru said they will need a MAPS engineer to tell them how much space is available

We discussed briefly the reasoning behind having four layers in the INTT. The 4th layer does not quite cover the TPC acceptance (eta = 1.0 instead of 1.1 for events at 10 cm). Itaru said that the 4th layer is really for redundancy in case of problems with ladders in the inner layers.

 

Itaru will report back after his visit to BNL.

 

 

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