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Analysis of Drift Time in Cross-Section Space Points for Particle Detectors

This study involves analyzing drift time data of Λ and Σ0 cross-section space points using Gaussian and quadratic functions to determine FWHM for event cross-section measurements. The research focuses on addressing stripe and longer drift time issues, with insights into VP flux impact.

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Analysis of Drift Time in Cross-Section Space Points for Particle Detectors

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  1. HES HKS meeting T.Gogami 8/25/2010 肉焼き装置 院試打ち上げ(8/24/2010) @ 青葉山憩いの森

  2. Content • drift time • no change • drift time KDC1 and 2 • Λ,Σ0cross section

  3. Space point testpoint combo spacepoint h_choose_single_hit.f number of combo of combo space point (X,Y) ID number of hit layer

  4. h_tof_pre.f drift_time(hit)

  5. h_tof_pre.f //initialize ==> flag on for(int i=0;i<space_points_tot) timeflag[hit] = 1 ; for (int i=0;i<space_points_tot){ hit = hspace_point_hits[isp][i+1+2] ; if(timeflag[hit] != 0 ){ drift_time[hit] = -starttime +dfrift_time[hit] ; timeflag[hit] = 0; // flag off } } やっぱり　足が欲しい drift_time_sp[isp][hit] = -starttime +dfrift_time[hit] ;

  6. initialization no change in “h_tof_pre.f”

  7. Drift time (KDC1 and KDC2) KDC1 (x wire) KDC2 (x wire)

  8. Λ and Σ0 cross section rev.415 • fitting Gaussian function + quadratic function • integral fitted function • number of event • cross section FWHM ~ 4.7 [MeV/c2] () Shichijo’s thesis

  9. Summary and to do • Summary • drift time • no advance • Λ( 270 [nb/sr ] ) , Σ0( 66 [nb/sr] ) • depend on VP flux • to do • drift time • stripe problem • longer drift time problem • VP flux estimation • Prague • presentation • insurance single residual χ2 Wirecoord drift time

  10. END 唐揚げ定食 (880円) @朱華飯店 8/23/2010

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