大学 activity: 粒子識別. 森 隆志 ( 名古屋大学 ) 関西中部地方 B 中間子の物理実験研究会 @ 奈良女子大学 2009 年 11 月 5 日. Contents. Introduction R&D of TOP counter components Performance test of prototype R&D of HAPD for A-RICH counter Summary. 1. INTRODUCTION. 1 . Our Motivation. Upgrade of Belle PID system - PowerPoint PPT Presentation
Citation preview
activity: () B@2009115
B@
TOP group, N-lab
ContentsIntroductionR&D of TOP counter componentsPerformance
test of prototypeR&D of HAPD for A-RICH counterSummary*B@Nov 5,
2009
B@
TOP group, N-lab
1. INTRODUCTION*B@Nov 5, 2009
B@
TOP group, N-lab
1. Our MotivationUpgrade of Belle PID systemCurrent PID system
of Belle/K separation power : 3Barrel: TOF + ACCEnd cap:
ACC*B@Target Performance 3 4 (0.6 < p < 4 GeV/c)Upgrade(ACC:
Threshold type Aerogel Cherenkov Counter)Barrel: TOP counter End
cap: Aerogel RICHBelle-IICurrent systemNov 5, 2009
B@
TOP group, N-lab
2. Principle of TOP counter (1)DIRC(Detection of Internally
Reflected Cherenkov light) technique Cherenkov radiator + screen
(photo-detector matrix)Cherenkov light propagate to terminal of
quartz with total reflection Ring image is detect as parabola
*B@Imaging with quartzRequire large screenNov 5, 2009
B@
TOP group, N-lab
2. Principle of TOP counter (2)*B@TOP(Time Of Propagation)
counterCherenkov radiator + time sensitive screenPosition (x, y)
Position + time (x, t)Very compact & simpleTOP counter
measuresTOF + RICHHigh performance expected!time includes TOF
informationTOFTOPNov 5, 2009zyx
B@
TOP group, N-lab
3. Expected Performance in Belle-II/K separation power
