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Measurement of hole Size & Position of the Extruded Naked strip

Measurement of hole Size & Position of the Extruded Naked strip. Adil Khan. Hole Position Distribution. Entries 69 Mean 4.833 RMS 0.0479. Measurement of hole position from either side. Entries 69 Mean 5.247 RMS 0.0567. 5.247. 4.833. Peak Loupe. Hole Size Distribution.

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Measurement of hole Size & Position of the Extruded Naked strip

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  1. Measurement of holeSize & Positionof the Extruded Naked strip Adil Khan

  2. Hole Position Distribution Entries 69 Mean 4.833 RMS 0.0479 Measurement of hole position from either side Entries 69 Mean 5.247 RMS 0.0567 5.247 4.833 Peak Loupe

  3. Hole Size Distribution

  4. Scintillator hole - MPPC Alignment • Problem - Scintillator hole is not matched to MPPC • Idea – Scintillator hole is not at center, but • hole is shifted to only one side consistently (~0.2 mm) • Procedure for hole-MPPC Alignment • Random selection of scintillator and polish • Randomly stack together • Flip scintillator side  shows hole position at one line • Move FPC to match MPPC with hole

  5. Procedure for hole-MPPC Alignment • Random selection of scintillator and polish • Randomly stack together • Flip scintillator side •  shows hole position at one line • Move FPC to match MPPC with hole New Strip Flip side New Strip

  6. Procedure for hole-MPPC Alignment -1 Ideal Case (hole-MPPC good matching) Good Uniformity Linearity Resolution Our Case (Problem) (hole-MPPC bad matching) Bad Uniformity Linearity Resolution

  7. Procedure for hole-MPPC Alignment -2 • Procedure for hole-MPPC Alignment • Random selection of scintillator and polish • Randomly stack together • Flip scintillator side •  shows hole position at one line • Move FPC to match MPPC with hole Making Alignment for MPPC position  Shifting Flexable Printed Circuit(FPC).  Good match hole-MPPC

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