Using coax cable from the tunnel and discriminators in the CH

Last updated 07/07/03

Setup

Cosmic trigger.

Unbalanced splitters are sitting directly on the PMTs.

Signal connections

	Mod	Ch
TDC	17	17	Aggressor 4 MHz
TDC	17	18	Time Calibrator
TDC	17	21	T0P4
TDC	17	26	T0P9
TDC	17	31	Start of the Time Calibrator via Disc 3412
TDC	13	60	L0
ADC	22	52	T0P4
ADC	22	57	T0P9

Run 12581

Calibration pulse. Draw("TDC17[18]

Time Calibrator Start. Draw("TDC17[31]

Draw("TDC17[18]-TDC17[31]+2268

Victim – Start. Much narrower now. Still don’t know why the originals are wide.

Draw("TDC13[60]>>h1")

L0. The RMS of the peak is 4.2.

T0P4 TDC. Draw("TDC17[21]>>h1

T0P9 TDC. Draw("TDC17[26]>>h1

There are no correlations between T0P4 and T0P9

T0P4 ADC. Draw("ADC22[52]]

T0P9 ADC. Draw("ADC22[57]]

ADC, T0P4 vs T0P9

TDC vs ADC for T0P4

TDC vs ADC for T0P9

Draw("(TDC17[21])>>h1","ADC22[52]>1200")

TDC T0P5 with amplitude cut

This is promising. RMS is 5.2 bins = 130 ps provided that RMS of the start is 3 bins

To do

Make the same run but have the delayed start always registered.