Difference between revisions of "04-20-2015"
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| Line 2: | Line 2: | ||
=Fake stop time= | =Fake stop time= | ||
| − | Discriminator width was decreased from 40 ns to | + | Discriminator width was decreased from 40 ns (255 on discriminator display) to 6.3 ns (10 on discriminator display) |
| − | + | Discriminator threshold is set to 100 mv | |
The delay for the fake stop is set to 800 ns | The delay for the fake stop is set to 800 ns | ||
Revision as of 17:37, 20 April 2015
Started testing detector 4 again.
Fake stop time
Discriminator width was decreased from 40 ns (255 on discriminator display) to 6.3 ns (10 on discriminator display)
Discriminator threshold is set to 100 mv
The delay for the fake stop is set to 800 ns
Below is a picture of the typical 400 ns fake stop pulse that should appear as a second hit in the Multihit TDC.
CODA/CODAreader/ROOT_V5.30/R1DC/evio2nt -fr4516.dat > /dev/null
R1DC->Draw("(evt.TDC1190[1][6]-evt.TDC1190[2][6])/10>>(4096,-4096,4096)");
Run 4534
Now increase delay of fake stop to 800 ns
Terminator test
r4534
Terminators in
Discriminator at 20 mv
PMT detector #4 HV at -1000 Volts