TWiki> BL4S Web>BL4S2018>PhotomultiplierSER (revision 7)EditAttachPDF

Measurements

Measurements of the Single Electron Response (SER) of the photomultipliers. For a full list of the available photomultipliers, see PhotomultiplierInventory2018.

ID LED HV Timebase Scale Int Min Int Max Result Comments
Sune 1.470 2150 10 ns/div 20 mV/div 2 7 PMSune_2150.png  
1.470 2198 10 ns/div 20 mV/div 2 7 PMSune_2198.png  
1.470 2250 10 ns/div 20 mV/div 2 7 PMSune_2250.png  
8919 1.445 2490 10 ns/div 20 mV/div 3.5 7 PM8919_2490.png No separation
7481 1.435 2496 10 ns/div 20 mV/div 3.5 8 PM7481_2496.png No separation
7497 1.420 2300 10 ns/div 20 mV/div 4 8 PM7497_2300.png Weird results:
  • We do see a peak moving with the HV, but there is some kind of underlying structure. What is it?
  • The larger pulses also seem to always come accompanied by a second smaller pulse.
7980 1.420 2200 10 ns/div 20 mV/div 1.5 5 PM7980_2200.png Best separaton so far in our photomultipliers
1.420 2250 10 ns/div 20 mV/div 1 4 PM7980_2250.png
6810 1.390 2350 10 ns/div 20 mV/div 1.5 5 PM6810_2350.png Not the best separation and operating close to maximum voltage
7337 1.420 2300 10 ns/div 20 mV/div 5 7.5 PM7337_2300.png Similar to PM 7497
17248 1.420 2200 10 ns/div 20 mV/div 2 5.5 PM17248_2200.png OK
8885 1.420 2200 10 ns/div 20 mV/div 4.5 9 PM8885_2200.png Peak was broad and not well defined
15598 1.480 2300 10 ns/div 20 mV/div 4 8 PM15598_2300.png Comment
8141 1.430 2350 10 ns/div 20 mV/div 2 7 PM8141_2350.png Comment
17208 1.530 2375 10 ns/div 20 mV/div 2 7 PM17208_2375.png Separation practically missing
         

-- CristovaoDaCruzESilva - 2018-06-11

Topic attachments
I Attachment History Action Size Date Who Comment
PNGpng PM15598_2300.png r1 manage 10.8 K 2018-06-13 - 11:11 CristovaoDaCruzESilva Single electron response for PM 15598 @ 2300V
PNGpng PM17208_2375.png r1 manage 10.5 K 2018-06-15 - 08:52 GianfrancoMorello Single electron response for PM 17208 @ 2375V
PNGpng PM17248_2200.png r1 manage 10.1 K 2018-06-13 - 11:07 CristovaoDaCruzESilva Single electron response for PM 17248 @ 2200V
PNGpng PM6810_2350.png r1 manage 10.2 K 2018-06-13 - 10:23 CristovaoDaCruzESilva Single electron response for PM 6810 @ 2350V
PNGpng PM7337_2300.png r1 manage 10.7 K 2018-06-13 - 10:24 CristovaoDaCruzESilva Single electron response for PM 7337 @ 2300V
PNGpng PM7481_2496.png r1 manage 10.7 K 2018-06-12 - 17:36 CristovaoDaCruzESilva Single electron response for PM 7481 @ 2496V
PNGpng PM7497_2300.png r1 manage 10.9 K 2018-06-12 - 17:39 CristovaoDaCruzESilva Single electron response for PM 7497 @ 2300V
PNGpng PM7980_2200.png r1 manage 10.2 K 2018-06-13 - 10:21 CristovaoDaCruzESilva Single electron response for PM 7980 @ 2200V
PNGpng PM7980_2250.png r1 manage 10.5 K 2018-06-13 - 10:21 CristovaoDaCruzESilva Single electron response for PM 7980 @ 2250V
PNGpng PM8141_2350.png r1 manage 10.4 K 2018-06-14 - 15:09 GianfrancoMorello Single electron response for PM 8141 @ 2350V
PNGpng PM8885_2200.png r1 manage 10.5 K 2018-06-13 - 11:09 CristovaoDaCruzESilva Single electron response for PM 8885 @ 2200V
PNGpng PM8919_2490.png r1 manage 10.7 K 2018-06-12 - 17:23 CristovaoDaCruzESilva Single electron response for PM 8919 @ 2490V
PNGpng PMSune_2150.png r1 manage 9.9 K 2018-06-12 - 17:12 CristovaoDaCruzESilva Single electron response for PM Sune @ 2150V
PNGpng PMSune_2198.png r1 manage 9.7 K 2018-06-12 - 17:18 CristovaoDaCruzESilva Single electron response for PM Sune @ 2198V
PNGpng PMSune_2250.png r1 manage 9.8 K 2018-06-12 - 17:18 CristovaoDaCruzESilva Single electron response for PM Sune @ 2250V
Edit | Attach | Watch | Print version | History: r15 | r9 < r8 < r7 < r6 | Backlinks | Raw View | Raw edit | More topic actions...
Topic revision: r7 - 2018-06-15 - GianfrancoMorello
 
    • Cern Search Icon Cern Search
    • TWiki Search Icon TWiki Search
    • Google Search Icon Google Search

    BL4S All webs login

This site is powered by the TWiki collaboration platform Powered by PerlCopyright & 2008-2019 by the contributing authors. All material on this collaboration platform is the property of the contributing authors.
Ideas, requests, problems regarding TWiki? Send feedback