Proton Calorimetry/Experimental Runs/2022/MayLED

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*Fibres used: 25 and 29 (25 used for single injection tests).
*Fibres used: 25 and 29 (25 used for single injection tests).
*Sheets used: 84, 82, 81, 80, 79, 78, 77, 76, 75
*Sheets used: 84, 82, 81, 80, 79, 78, 77, 76, 75
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*Materials tested: none, white paper (0.01 mm thick), black card (0.02 mm thick), mylar foil (0.0012 mm thick). Materials cut into 10 cm x 10 cm layers and placed in-between sheets.
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*Materials tested: none, white paper (0.01 mm thick), black card (0.02 mm thick), mylar foil (0.006 mm thick). Materials cut into 10 cm x 10 cm layers and placed in-between sheets.
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Revision as of 11:14, 16 May 2022

Optical isolation tests using LED fibre in D27.

Aim: Investigate optimal material to use to optically isolate unpainted sheets and whether single layers of material provide sufficient isolation.

Notes

  • DDC232 settings: 170us integration time and measured 10000 samples per run.
  • Signal Generator settings: 0 ps delay, 500 kHz, 300 ns width, 5 ns leading edge and trailing edge, 6V high, 0V low.
  • Fibres used: 25 and 29 (25 used for single injection tests).
  • Sheets used: 84, 82, 81, 80, 79, 78, 77, 76, 75
  • Materials tested: none, white paper (0.01 mm thick), black card (0.02 mm thick), mylar foil (0.006 mm thick). Materials cut into 10 cm x 10 cm layers and placed in-between sheets.
Run Description Graph
1 No material dark noise test, 12.5pC

Run001.png

2 No material cross-talk test, 12.5pC

Run002.png

3 No material light level test sheet 1, 350pC

Run003.png

4 D27, CMOS off, 12.5pC

Run004.png

5 D109, CMOS on, 350pC

Run005.png

6 D109, CMOS on, 12.5pC

Run006.png

7 D109, CMOS off, 350pC

Run007.png

8 D109, CMOS off, 12.5pC

Run008.png

9 D109, CMOS on, 12.5pC. Detector housing grounded using ground pin of FPGA. Grounded using optical breadboard inside detector.

Run009.png

10 D109, CMOS on, 12.5pC. Previous grounding seemed ineffective. Now grounded by attaching clip to metal on outside face of detector enclosure.

Run010.png

11 D109, CMOS off, 12.5pC, grounded.

Run011.png

12 D27, CMOS off, 12.5pC, grounded.

Run012.png

13 D27, CMOS off, 12.5pC

Run013.png

14 D27, CMOS off, 12.5pC, grounded, LED. LED pulse of 1MHz, 6V height and 500ns width. Injected into single scintillator sheet coupled to photodiode 16.

Run014.png

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