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MVD Simulations with Digitizer
Christian Trageser1, Michael Deveaux1,3, Christina Dritsa1,2,3
IKF Frankfurt1, GSI Darmstadt2, IPHC Strasbourg3
Outline• Motivation• Simulation Setup• Results• Summary and Conclusion
Our results show few preferences for a specific detector design (yet)
Conclusion: Shrinking MVD tracking efficiency is an issue.Substantial room for optimization, needs interaction with tracking experts
Next steps:• Repeat study with higher statistics• Study detector layouts in a systematic way• Estimate SvZ-Resolution• Start a study on open charm reconstruction• Optimize hit finding
Thank you for your attention!
Cluster merging as function of pile-up
> 80% of all merged clusters are in the delta electron region
Digitizer: Simulated vs. measured resolution
18.4 µm pitch1 bit readoutThreshold = threshold N
3,5 4,0 4,5 5,0 5,5 6,0 6,5 7,0 7,50
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Res
olut
ion
[µm
]
Threshold [S/N]
Simulation - X Simulation - Y Experiment
IP Resolution as a function of Pile-up
3 Stations
preliminary
Same trend for
Running conditions of the MVD
The occupancy is dominated by delta electrons generated in the target.Handling them needs detector with very high granularity
Hits
/eve
nt
distance between station and target[cm]
Motivation
Good track finding is essential for open charm reconstruction.
• To find a optimized Geometry for the MVD– Check Tracking Efficiency– Check Efficiency of the cuts– Different pile up scenarios