Detection efficiency measurement of the trigger counters for MuSIC - - PowerPoint PPT Presentation

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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


slide-1
SLIDE 1

Detection efficiency measurement of the trigger counters for MuSIC beam tests

Izyan Hazwani Hashim D1 Kunolab 19 December 2011

slide-2
SLIDE 2

Outline

  • Introduction
  • Experimental setup
  • Trigger logic
  • Results:
  • Summary
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SLIDE 3

Introduction

  • MuSIC facility was constructed in RCNP,

Osaka University.

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SLIDE 4

Muon yield estimation

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SLIDE 5

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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SLIDE 6
  • 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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SLIDE 7

Experimental Setup

PS1
 PS1
 PS3
 PS2
 PMT1
 PMT2
 MuSIC
 trigger
 counter


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SLIDE 8

Possible hits

1
 2
 3


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SLIDE 9

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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SLIDE 10

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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SLIDE 11

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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SLIDE 12

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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SLIDE 13

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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SLIDE 14

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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SLIDE 15

Next To Do

  • Take data with 4 counters
  • Improve efficiency of detector
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SLIDE 16

THANK YOU FOR YOUR ATTENTION