05-1-2017

go_back

Electronics map for the two auxiliary scintillators

Phi Angle (Degrees)	PMT distance	Signal cable label	HV cable label	HV channel on Lecroy Mainframe	CFD CH	VNIM-ECL channel	ROOT variable
~282	m	102B1.2	shv1.2	5:L1.2	1	(left) B-0	evt.TDC[1][25]
~282	m	282T1.7	shv1.7	5:L1.7	2	(left) B-1	evt.TDC[1][26]

run list

He-3 timing is in patch panel 223A16, & energy is 223A17.

High voltage & discriminator settings:

30T: 1450;30 , 30B:1450;30 , 54T: 1500;30 , 54B: 1500;30 , 78T:1500;30 , 78B: 1525;30 , 126T: 1500;30 , 126B: 1500;30 , 150T: 1500;40 , 150B: 1500;40 , 210T: 1500;40 , 210B: 1500;40 , 234T: 1500;30 , 234B: 1500;30 , 258T: 1350;30, 258B: 1450;30 , 306T: 1400;30 , 306B: 1400;30 , 330T: 1450;30 , 330B: 1500;30

Radiator 1.5" Al.

Slits currently at 500 => 19 mm, at 75 =0, at 1000=38 mm, readback number is linear with slit width.

Small aux. scintillators have a CFD threshold of 0.550 V for run 6274 and later.

Run #	Charge/pulse	Target	Configuration	Individual histos + rates	overlayed histos	All PMT's no coinc.
6272	18 pV*s	D2O	7.5 MeV , 3 ns FWHM pulse width , 1.3 A Peak , 180.4 Hz ,
6273	21 pV*s	Th	7.5 MeV , 3 ns FWHM pulse width , 1.3 A Peak , 180.4 Hz , small Scint at .725 m and 1.45 m, teed off Beam current monitor changing pulse size from 21 pV*s to 14 pV*s , inserted beam current into PADC ch 6 20 minutes into run
6274	12 pV*s	Th	, 7.0 MeV , 3 ns FWHM pulse width , 1.3 A Peak , 180.4 Hz , small Scint at .725 m and 1.45 m,
6275	pV*s	Al	, 7.0 MeV , 3 ns FWHM pulse width , 1.3 A Peak , 180.4 Hz , small Scint at .725 m and 1.45 m,

go_back