sPHENIX MAPS tracker discussion

[pengst3 <pengst3 AT mail2.sysu.edu.cn>]

Hi all,

The following is my abstract for Test Beam data analysis.

sPHENIX is a next generation high speed multipurpose detector focused on jet, Upsilon and

open heavy avor programs. MVTX is a fast MAPS-based vertex detector designed for precise

secondary vertex measurement. Our group focuses on the simulation and reconstruction of MVTX

in sPHENIX software. We have been tuning the MVTX cluster size with the 2019 Test Beam Data.

A threshold of deposite energy on pixels need to be introduced to match the simulation result up

with Test Beam Data. Charge diusion will aect the energy deposit, ranging from minimal R to

maximal R. We divide the step in sensor into N segments, then calculate the overlapping area of

circle with pixels to distribute energy deposit in the segment, and sum up all segments to get the

total energy deposit on each pixel. We matched the cluster sizes of simulation result with the one

of TB data, and compared the TB data of 120 GeV protons with simulation result at dierent

angles.

If you have any suggestions, feel free to contact me.

Thank you!

Best,

Sitong