Proton Calorimetry/Experimental Runs/2022/MayLED

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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

Run Description Graph
1 D27, CMOS on, 350pC

Run001.png

2 D27, CMOS on, 12.5pC

Run002.png

3 D27, CMOS off, 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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