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Tracking Analysis for beam test T585

Tracking Analysis for beam test T585. CONTENTS SETUP MAPPING/ FIBER ALIGNMENT DEAD CHANNEL ANALYSIS 2D TRACKING P.E. DISTRIBUTION 3D TRACKING P.E. DISTRIBUTION RECONSTRUCTED EVENT. SETUP. BEAM. #4. #3. #2. #1. 47.5 cm. 32.5 cm. 7.3 cm. -47.5 cm. TOFs. VLPC channels.

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Tracking Analysis for beam test T585

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  1. Tracking Analysis for beam test T585 CONTENTS • SETUP • MAPPING/ FIBER ALIGNMENT • DEAD CHANNEL • ANALYSIS • 2D TRACKING • P.E. DISTRIBUTION • 3D TRACKING • P.E. DISTRIBUTION • RECONSTRUCTED EVENT

  2. SETUP BEAM • #4 • #3 • #2 • #1 • 47.5 cm • 32.5 cm • 7.3 cm • -47.5 cm TOFs

  3. VLPC channels • 512 channel per AFE board -> 2048 ch in total AFE board # 104 # 107 # 106 # 105 LH Cassette RH Cassette

  4. GAIN CALIBRATION • Gain is estimated by gaussian fitting • AFE board #106 • MCM #1 • Channel #1

  5. DEAD CHANNEL • VLPC dead (estimated by LED run) • AFE board# 104: ? channels • # 107: 3 channels • # 106: 4 channels • # 105: 4 channels • “Fiber dead” (estimated by normal run) • NOT YET STUDIED....

  6. SIGNAL of SCIFI Raw signal converted into photo electron after subtracting common mode RUN# 1255 B=0T , Rotation=0deg, w/o diffuser

  7. ANALYSIS • 2D Tracking • Fiber Alignment • P.E. Distribution • 3D Tracking • Reconstructed Event

  8. 2D TRACKING V VIEW W VIEW Y X • HIT • Fibers over 2.5 p.e. • FITTING • Minimum chi-square fit • X view : y position Yx • V view : x position Xuv crossed with X view • W view: x position Xuw crossed with W view X VIEW Yx Xuv Xuw BEAM • #1 • #2 • #3 • #4

  9. MAPPING/ FIBER ALIGNMENT After correction..... Fiber # (station 1) Fiber # (station 2)

  10. MAPPING/ FIBER ALIGNMENT Fiber # (station 2) - Fiber # (station 1) Fiber # (station 1) OFFSET TWIST

  11. CROSSING HIT POSITION X position Xw V VIEW W VIEW X position Xv Yx Xv Xw X VIEW

  12. 3D TRACKING • HIT • Fibers of maximum light yield • FITTING • Circular fitting BEAM • #2 • #3 • #4

  13. RECONSTRUCTED EVENT RUN# 1320 B=1T , Rotation=6deg., w/o diffuser • p by TOF

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