Star-fst-l mailing list

["Ye, Zhenyu" <yezhenyu AT uic.edu>]

Hi Gerard,

Please find some pictures taken with two pieces of Littelfuse # 01220087Z 
attached to cooling tube, in the attachment of the Drupal page 
https://drupal.star.bnl.gov/STAR/event/2020/08/31/star-forward-silicon-tracker-meeting/follow-action-items

Both of them clamp onto the cooling tube where it is away from the MS: the 
top one is at a place between two connectors where the diameter of the tube 
is relatively smaller, while the other at a place where the diameter is 
relatively larger. I think it will work if we are going to use one of these 
places for detector installation. But it won’t work if we want to attach the 
Littelfuse # 01220087Z onto the tube where the tube is attached to MS.

How do you attach a wire to the Littelfuse # 01220087Z, by soldering?

Zhenyu


> On Wed, Aug 19, 2020 at 8:35 PM Ye, Zhenyu <yezhenyu AT uic.edu> wrote:
> Dear Gerard,
> 
> Thanks for looking into this. I ordered a few and will test it next week 
> after they arrive.
> 
> Zhenyu
> 
> > On Aug 18, 2020, at 8:56 PM, Gerard Visser <gvisser AT indiana.edu> wrote:
> > 
> > Dear Yi and Zhenyu,
> >       Could one or both of you please order some Littelfuse # 01220087Z 
> > (Mouser has stock, 84 cents each, 
> > https://urldefense.com/v3/__https://www.mouser.com/ProductDetail/Littelfuse/01220087Z?qs=*2Fha2pyFaduglErFCB38n3htdBYhndPrY4k2JWosNk8ORS1jEraEYXw*3D*3D__;JSUl!!P4SdNyxKAPE!V3xdOkTruG4VzRQirTwQLvHJK3hFVDssHTjK_gul0YsV3ws-wDDmrQl-94G_9KuV283L_mo$
> >   ) to evaluate for use in connecting the short ground wire from T-board 
> > to the cooling tube on each module?
> >       Nominally it is meant to give a nice solid electrical connection to 
> > a 1/4 inch fuse terminal, it shoud similarly snap nice and solidly onto 
> > the cooling tube. Hopefully there is a short straight place where it can 
> > be put.
> >       Sincerely,
> > 
> >               Gerard
> > 
> > 
> > On 8/17/2020 10:40 AM, Ye, Zhenyu wrote:
> >> Minutes:
> >> Integration:
> >> 1) Design and fabricate light-tight box for the DAQ integration test at 
> >> BNL - Rahul/Flemming
> >> -> Found a dark Box made of thick plastics. Will drill holes for cables 
> >> and decide how to fix the FST storage box in Nov.
> >> 2) Design the cooling lines, and cable trays between disks and cooling 
> >> manifold - Felix/Rahul
> >> -> Expect a presentation next week.
> >> 3) Cooling rack refurbishment and test - Rahul
> >> -> Flew NOVEC last Monday, but the system started tripping on Tuesday 
> >> but no interlock dropped. Will investigate.
> >> Mechanical structure:
> >> 1) Document the proposed changes to the mechanical structure - Yi
> >> -> Will do this week
> >> 2) Test and examine the new assembly procedure - Yi
> >> -> New jigs needed some changes. Done last Friday. May have the results 
> >> this week
> >> Hybrid/T-board/Inner Signal Cable/Patch Panel Board/Back of Crate Board:
> >> 2) Check how T-board would mount onto MS, and fix cables - 
> >> Jianing/Maowu/Mike/Gerard
> >> -> Rahul/Felix will give a presentation on cable fixing next week. Will 
> >> decide whether to keep or remove the four cable-tie holes on the T-board
> >> -> Maowu will follow up with Yi to see how to change the holes on the 
> >> corners of the T-board to slots
> >>  Production Module assembly:
> >> 1) Get updated quote from Hamamatsu - Zhenyu
> >> -> Done. Hamamatsu final quote and spec for production sensors.
> >> -> Flemming: request has been submitted to BNL procurement.
> >> -> Elke: Don't see why the order can not be placed this Month. Need 
> >> constant follow-up
> >> 2) Discuss with Fermilab about production module assembly schedule - 
> >> Zhenyu/Xu
> >> -> Zhenyu will provide the contact person info to Elke so that she can 
> >> ask for and understand the spendings on prototypes, and estimates for 
> >> the production
> >> Prototype Module test:
> >> 1) Gavin: compared different hit reconstruction threshold and time bin 
> >> requirements using data taking with FST03 (both inner and outer). Found 
> >> consistent results as FST01 (outer sensor only)
> >> Software:
> >> 1) Develop FST slow simulator to study tracking performance - 
> >> Gavin/Shenghui/Daniel
> >> -> Shenghui: no statistically significant difference in pT resolution 
> >> between fast and slow simulators. Will further check.
> >> 2) Prepare FST fast simulator code for Review - Shenghui
> >> -> Done.
> >> **** Action items ****
> >> Integration:
> >> 1) Design the cooling lines, and cable trays between disks and cooling 
> >> manifold - Felix/Rahul
> >> 2) Cooling rack refurbishment and test - Rahul
> >> 3) Installation procedure and tolerance requirements - Rahul/Yi/Zhenyu
> >> 4) Survey procedure and requirements - Rahul
> >> 5) Prepare documents for prelim safety review with C-AD - all
> >> Mechanical structure:
> >> 1) Document the proposed changes to the mechanical structure - Yi
> >> 2) Test and examine the new assembly procedure - Yi
> >> 3) Use thermal camera to check air bubbles for hybrid mounting - Yi
> >> 4) Add flux-cleaning step in the document - Yi
> >> 5) Document the mechanical structure and hybrid assembly QC criteria - Yi
> >> Hybrid/T-board/Inner Signal Cable/Patch Panel Board/Back of Crate Board:
> >> 1) Update the T-board design to avoid the conflict with Mechanical 
> >> structure - Jianing/Maowu/Gerard
> >> 2) Check how T-board would mount onto MS, and fix cables - 
> >> Jianing/Maowu/Mike/Gerard
> >> 3) Look into splitting the inner and outer sensor HV bias - 
> >> Mike/Gerard/Christian
> >> 4) Send the problematic prototype cable-T-board assembly to Mike for 
> >> investigation - Zhenyu/Mike
> >> 5) Develop the QC procedure for Inner cable and T-board assembly - 
> >> Mike/Maowu
> >> Production Module assembly:
> >> 1) Discuss with Fermilab about production module assembly schedule - 
> >> Zhenyu/Xu
> >> 2) Design and fabricate module storage boxes for production at UIC - 
> >> Xu/Andres
> >> 3) Duplicate the module assembly tooling at UIC - Xu/Zhenyu
> >> Prototype Module test:
> >> 1) Look into the overall large CMN noise, and the abnormal noise of few 
> >> channels first appear in the readout - Gerard/Xu
> >> 2) Check the FST noise performance at high readout rate - Xu
> >> 3) Use the laser test stand to characterize prototype module performance 
> >> - Andres/Zhenyu
> >> 4) Test stand setup at BNL - Prithwish/Hu
> >> Software:
> >> 1) Prepare FST offline software - Shenghui/Xu
> >> 2) Detector slow control - Xu
> >> 3) Cooling system slow control - Prithwish/Hu
> >>> On Aug 14, 2020, at 9:42 PM, Ye, Zhenyu <yezhenyu AT uic.edu> wrote:
> >>> 
> >>> Dear all,
> >>> 
> >>> We will have the Weekly FST meeting on Monday starting at 9am EST (BNL 
> >>> local time).
> >>> 
> >>> Bluejeans Meeting URL https://bluejeans.com/101020434
> >>> Meeting ID: 101 020 434
> >>> 
> >>> https://drupal.star.bnl.gov/STAR/event/2020/08/17/star-forward-silicon-tracker-meeting
> >>> 
> >>> 0. follow-ups on review and action items *
> >>> 1. Integration                                                          
> >>>           by Rahul Sharma, Felix Archampong
> >>> 2. Hybrid, T-board                                                      
> >>>   by Maowu Nie, Gerard Visser
> >>> 3. Patch panel boards and ABC boards                       by Mike 
> >>> Capotosto, Gerard Visser
> >>> 4. Simulation Studies                                                   
> >>>  by Shenghui Zhang
> >>> 5. Prototype Module Test                                              
> >>> by Xu Sun, Gavin Wilks
> >>> 6. Mechanical structure                                                 
> >>> by Yi Yang
> >>> 
> >>> * 
> >>> https://drupal.star.bnl.gov/STAR/event/2020/08/17/star-forward-silicon-tracker-meeting/follow-review-and-action-items
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