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Inventory Update on RD-50 Silicon Sensors

Inventory Update on RD-50 Silicon Sensors. Jeff Wiseman 6-15-09. Sets of Sensors. 37 Total Boxes Last year 23 Boxes (22 at SU, 1 at FNAL) All boxes at SU had IV tests 19 of 22 boxes at SU had CV tests This year 14 New Boxes 7 N on N Boxes (No IV tests done yet)

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Inventory Update on RD-50 Silicon Sensors

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  1. Inventory Update on RD-50 Silicon Sensors Jeff Wiseman 6-15-09

  2. Sets of Sensors • 37 Total Boxes • Last year • 23 Boxes (22 at SU, 1 at FNAL) • All boxes at SU had IV tests • 19 of 22 boxes at SU had CV tests • This year • 14 New Boxes • 7 N on N Boxes (No IV tests done yet) • 7 N on P Boxes (5 Boxes of IV tests done) • A completed box in this case will be a box that has had the IV test done on it, all new boxes have not had CV test done on them

  3. Inventory by Growth Method • FZ (15 Total) • 12 Boxes Complete • 2 Boxes Incomplete • 1 Box at FNAL • FZN (1 Total) • 1 Box Complete • MCZ (21 Total) • 16 Boxes Complete • 5 Boxes Incomplete

  4. Inventory by Doping Type • P-Type (28 Total) • 18 Boxes Complete • 9 Boxes Incomplete • 1 Box at FNAL • N-Type (9 Total) • 9 Boxes Complete

  5. 2551 (6 Total) 5 Boxes Complete 1 at FNAL 2552 (12 Total) 7 Boxes Complete 5 Boxes Incomplete 2553 (4 Total) 4 Boxes Complete 2535 (6 Total) 6 Boxes Complete 2615 (2 Total) 2 Boxes Complete 2684 (5 Total) 3 Boxes Complete 2 Boxes Incomplete 2446 (2 Total) 0 Boxes Complete 2 Boxes Incomplete Inventory by Boxes

  6. Vbias Ground IV Measurements • Placement of the high voltage probe is on the bias ring • Placement of the low voltage probe is on the rubber pad Circuit #1 Guard Ring Bias Ring

  7. Old IV Curve

  8. More Recent IV Curve

  9. Depletion Voltages • Depletion voltages are taken from the CV measurements • Not all of the boxes have been tested • Following slides will have histograms of the depletion voltages split up by box, silicon method, and doping • All are scaled to the same voltages, so the comparison between everything can be seen

  10. Plans • Continue testing new sensors with both IV and later CV • Investigate odd readings by testing sensors with and without rubber pad • Start RD-50 Sensor Report, research information as needed

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