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Results of 50 SIC Crystals Received in January 2004

This presentation provides an overview of the 50 SIC crystals received in January 2004, detailing the quality control procedures, irradiation methods, and comparison of measured parameters with specifications. The distribution of measured dimensions, transmission properties, and correlation with SIC data are analyzed. The effects of lateral and front irradiation on the crystals are also discussed.

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Results of 50 SIC Crystals Received in January 2004

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  1. Results of the 50 SIC crystals Received in January 2004 E. Auffray, CERN PH-CMA

  2. Introduction What has been done ? • They have all followed the “routine” QC procedure • Identification • Visual Inspection • Accoce2 measurements • 10 have been irradiated in Geneva hospital • lateral irradiation, 350Gy/h, 400Gy • 3 have been irradiated in lab27 • Front irradiation, 0.15Gy/h Presentation • Distribution of all measured parameters (compared to the specifications) • Comparison with SIC data

  3. AF AR BF BR CR CF Lateral Dimension Measured dimensions- Nominal dimensions

  4. Length Measured dimensions- Nominal dimensions

  5. Face1 Face 2 Face5 Face6 Face3 Face4 Planearity

  6. Endcap geometry

  7. Distribution of (measured angle-90deg) Angle 1-3 Angle 1-6 Angle 2-3 Angle 2-6 Problem with the geometry No flat pack (No right angle)

  8. Longitudinal Transmission 360nm 420nm 620nm

  9. Slope

  10. Longitudinal TransmissionComparison with SIC data 360nm 420nm 620nm

  11. Dispersion Gradient of TTO Transversal transmission SIC

  12. LY LY FNUF RNUF

  13. Correlation with SIC data

  14. LY & transmission Correlation with T @360nm No correlation with T@420nm

  15. LY Non Uniformity& transmission No correlation with T420nm but correlation with gradTTO

  16. Decay time Ly in 100ns / Ly in 1000ns (%)

  17. Irradiationlateral irradiation, 350Gy/h, 400Gy

  18. IrradiationFront irradiation, 0.15Gy/h

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