Started testing detector 4 again.

Fake stop time

Found some double pulsing out of the discriminator that was 100 ns later in time causing a second peak other than the expected one at 400 ns.

Below is a picture of a double pulse

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

Terminators in

Discriminator at 20 mv

PMT detector #4 HV at -1000 Volts