Star-fst-l mailing list

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

0. Follow-up on Action items from previous weeks 
1) Integration: send an email with detailed questions to the list to collect 
information - Rahul/Felix 
2) Document the procedure and requirements of gluing hybrids onto MS for Plan 
A at NTU - Yi/Han-Sheng 
3) Document the procedure and requirements of gluing hybrids onto MS for Plan 
B by AIDC. This is needed before new hybrid production - Yi/Han-Sheng 
-> work on Plan A now and put Plan B on hold
4) Document on how/where the company would measure the surface flatness and 
being parallel between inner-outer sectors, before and after glueing hybrids 
and inner-outer sectors together - Yi/Han-Sheng
5) Look into radiation tolerance test of soft cooling tubes at 
BNL/STAR/Taiwan - Flemming/Yi
-> Flemming: need samples of tubes; Yi: may be able to do it in Taiwan. See 
details below
6) Measuring hybrid flatness, thickness and dimensions - Maowu/Jianing
-> sent the 3 hybrids to the company 
7) UIC send a T-board and cable to NCKU to check if there is any conflict 
with the MS - Zhenyu 
8) Looking into alternative clustering algorithm to improve matching 
efficiency - Xu
9) Tune the timing setting for ADC sampling - Gerard/Xu
10) Studying the tracking performance by varying the Z-locations of FST 
disks, and number of r/phi segments - Krishan/Daniel
11) Looking into FST simulation and track reconstruction to compare 300 vs 
500 micron thick sensors - Shenghui

1. Integration                                                                
by Rahul Sharma/Felix Archampong
-> After last week’s presentation, Rahul and Felix discussed about next 
steps, how to solve problems for installation. Felix has all the inputs and 
working on the model, the details. Within the next couple of weeks, will have 

2. Hybrid                                                                     
        by Maowu Nie, Jianing Dong

3. Prototype Module Assembly and Test                       by Xu Sun
-> tried “simple" and “scan” clustering algorithms from IST on FST. Matching 
efficiency slightly decreased with “scan". Will check what works and what 
not, to improve the “scan” algorithm 

4. Tracking Studies                                                        by 
Krishan Gopal, Daniel Brandenburg 
-> will plot charge mis-ID rate
-> will repeat the same study on slide 5 but for other r segment setting
-> will study phi-segment 
-> use calorimeter matching may help improving the resolution

5. Simulation Studies                                                     by 
Shenghui Zhang
-> will compare Refit success rate between 300 and 500 micron 
-> use PYTHIA, not Hijing, to study secondary particles and photon conversion 

6. Mechanical structure                                                 by Yi 
Yang
-> picked 3 out of 10 sets of MS for assembly. The other 7 is not flat by 
eye. Measured 200 microns RMS of surface flatness for the picked sets. Will 
find out the maximum deviation
-> the 1kG weight is from the pick-up jig, whose height is calculated taking 
into account the thickness of the hybrid, MS etc. After loosing the vacuum, 
the weight of the jig will be laid onto the MS+hybrid, to press them 
together. 
-> have connectors soldered on to hybrids. Will do electrical test as agreed 
previously. Will look for male connectors to plug-unplug and repeat the test. 
-> Testing of soft tubes seem to consistent with Vendor’s info. Look into 
doing the radiation tests with Co-60 source, which might take 1-2 weeks to 
get the full exposure. 

*** Action items ***
1) Integration: send an email with detailed questions to the list to collect 
information - Rahul/Felix 
2) Document the procedure and requirements of gluing hybrids onto MS for Plan 
A at NTU - Yi/Han-Sheng 
3) Look into radiation tolerance test of soft cooling tubes at STAR/Taiwan - 
Flemming/Yi
4) Measuring hybrid flatness, thickness and dimensions - Maowu/Jianing
5)) UIC send a T-board and cable to NCKU to check if there is any conflict 
with the MS - Zhenyu 
6) Looking into alternative clustering algorithm to improve matching 
efficiency - Xu
7) Tune the timing setting for ADC sampling - Gerard/Xu
8) Studying the tracking performance by varying the Z-locations of FST disks, 
and number of r/phi segments - Krishan/Daniel
9) Looking into FST simulation and track reconstruction to compare 300 vs 500 
micron thick sensors - Shenghui

> On May 16, 2020, at 7:25 AM, 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/2020/05/18/star-forward-silicon-tracker-meeting
> 
> Tentative meeting agenda:
> 
> 0. follow-ups on the action items from last week (see *** below)
> 1. Integration                                                              
>         by Rahul Sharma/Felix Archampong
> 2. Hybrid                                                                   
>         by Maowu Nie, Jianing Dong
> 2. Mechanical structure                                                 by 
> Yi Yang
> 3. Prototype Module Assembly and Test                       by Xu Sun
> 4. Tracking Studies                                                        
> by Krishan Gopal, Daniel Brandenburg 
> 5. Simulation Studies                                                     
> by Shenghui Zhang
> 
> *** Action items from previous weeks ***
> 
> 1) Integration: send an email with detailed questions to the list to 
> collect information - Rahul/Felix 
> 2) Document the procedure and requirements of gluing hybrids onto MS for 
> Plan A at NTU - Yi/Han-Sheng 
> 3) Document the procedure and requirements of gluing hybrids onto MS for 
> Plan B by AIDC. This is needed before new hybrid production - Yi/Han-Sheng 
> 4) Document on how/where the company would measure the surface flatness and 
> being parallel between inner-outer sectors, before and after glueing 
> hybrids and inner-outer sectors together - Yi/Han-Sheng
> 5) Look into radiation tolerance test of soft cooling tubes at 
> BNL/STAR/Taiwan - Flemming/Yi
> 6) Measuring hybrid flatness, thickness and dimensions - Maowu/Jianing
> 7) UIC send a T-board and cable to NCKU to check if there is any conflict 
> with the MS - Zhenyu 
> 8) Looking into alternative clustering algorithm to improve matching 
> efficiency - Xu
> 9) Tune the timing setting for ADC sampling - Gerard/Xu
> 10) Studying the tracking performance by varying the Z-locations of FST 
> disks, and number of r/phi segments - Krishan/Daniel
> 11) Looking into FST simulation and track reconstruction to compare 300 vs 
> 500 micron thick sensors - Shenghui
> 
> Best,
> Zhenyu
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