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Detection efficiency measurement of the trigger counters for MuSIC beam tests
Izyan Hazwani Hashim D1 Kunolab 19 December 2011
Outline
- Introduction
- Experimental setup
- Trigger logic
- Results:
- Summary
Detection efficiency measurement of the trigger counters for MuSIC - - PowerPoint PPT Presentation
Detection efficiency measurement of the trigger counters for MuSIC - - PowerPoint PPT Presentation
Detection efficiency measurement of the trigger counters for MuSIC beam tests Izyan Hazwani Hashim D1 Kunolab 19 December 2011 Outline - Introduction - Experimental setup - Trigger logic - Results: - Summary Introduction MuSIC
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Introduction
- MuSIC facility was constructed in RCNP,
Osaka University.
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Muon yield estimation
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Number of µ+/µ- produced by can be measure by:
- Lifetime measurement
– Trigger counter, Mg
target
- Muonic X-ray
measurement
- Trigger counter, Mg
target, Ge detector.
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- The purpose of this study is to determine the
efficiency and position dependence of the detector that is used in MuSIC beam test.
- Why?
– Precise estimation of solid angle – Detection efficiency of counters in
particular position dependence.
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Experimental Setup
PS1 PS1 PS3 PS2 PMT1 PMT2 MuSIC trigger counter
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Possible hits
1 2 3
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Trigger Logic
PMT PS 1 Plastic Scintillator PS 2 PS 3 PS 4 coincidence Input Output Register G.G VETO QDC TDC Stop Start
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Results
- Current status: only attached PMT, Strip
Scintillator & top counter.
- Efficiency of the detector can be calculated:
- No. of hits PS1/PS2/PS3/PS4
Total hits on Trigger Counter Efficiency = X 100%
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Cosmic Ray
QDC 1 QDC 4 QDC 3 QDC 2 QDC 6 QDC 7 QDC 8 QDC 9 QDC 10 QDC 5
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No of hits PS 4 No of hits PS 3 No of hits PS 2 No of hits PS 1
No of hit corresponds to each PS
- Hit on PS
- Hit on both PS & TC
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Efficiency
Hit on PS Hit on PS & TC Efficiency (%) PS1 1139 278 27.7 PS2 6796 156 28.5 PS3 3043 843 16.5 PS4 607 168 24.8
# Since the size of PS and MuSIC Trigger counter is different, the efficiency is low.
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Summary
- A new high intensity muon beam line is
under construction at Osaka University, and is expected to provide 108 muons/sec (both µ+ and µ-).
- The detector efficiency should be uniform
to get better and efficient number of muon yield.
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Next To Do
- Take data with 4 counters
- Improve efficiency of detector
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