LDS HpGe CPAA Apparatus - Revision history

Foretony: /* 6/19/14 */

2014-07-23T16:56:39Z

6/19/14

2014-07-23T16:53:00Z

7/23/14 Signals observed

2014-07-23T16:50:28Z

6/19/14

2014-06-19T22:12:53Z

6/19/14

2014-06-19T22:10:06Z

6/19/14

2014-06-19T22:05:14Z

6/19/14

2014-06-19T22:04:24Z

2014-06-19T22:00:49Z

2014-06-19T22:00:38Z

2014-06-19T22:00:19Z

New page

[[LDS_HpGe_CPAA#Apparatus]]

@@ Line 18: / Line 18: @@
+== Noise Level==
 The noise level increases on Zyad to 25 +/- 5 mV when the HV is turned off while Tareq's is 12 +/- 5 mV.
 [[File:HpGe_LDS_Tareq_Zyad_C6-19-2014.png | 200 px]]
 = 7/23/14 Signals observed=

@@ Line 26: / Line 26: @@
 = 7/23/14 Signals observed=
-After installing the enw ceramic collars on each detector, they were cooled down and the signals below were observed.
+After installing the new ceramic collars on each detector, they were cooled down and the signals below were observed.
 [[File:Zyad_Tareq_07242014.png | 200 px]]

← Older revision		Revision as of 16:50, 23 July 2014
Line 23:		Line 23:
	[[File:HpGe_LDS_Tareq_Zyad_C6-19-2014.png \| 200 px]]		[[File:HpGe_LDS_Tareq_Zyad_C6-19-2014.png \| 200 px]]

		+
		+	= 7/23/14 Signals observed=
		+
		+	After installing the enw ceramic collars on each detector, they were cooled down and the signals below were observed.
		+
		+	[[File:Zyad_Tareq_07242014.png \| 200 px]]
		+
		+	I noticed there are offsets on the signal coming from output 1 on each detector. Zyad's has a +50 mV offset and Tareq has a -40 mV offset.

	[[LDS_HpGe_CPAA#Apparatus]]		[[LDS_HpGe_CPAA#Apparatus]]

← Older revision		Revision as of 22:12, 19 June 2014
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−	Below are 2 scope ~~picture~~ of the signal coming directly out of the detectors	+	Below are 2 scope pictures of the signal coming directly out of the detectors

	[[File:HpGe_LDS_Tareq_Zyad_6-19-2014.png \| 200 px]][[File:HpGe_LDS_Tareq_Zyad_B6-19-2014.png \| 200 px]]		[[File:HpGe_LDS_Tareq_Zyad_6-19-2014.png \| 200 px]][[File:HpGe_LDS_Tareq_Zyad_B6-19-2014.png \| 200 px]]

← Older revision		Revision as of 22:10, 19 June 2014
Line 19:		Line 19:


−	The noise level increases on Zyad ~~increases~~ to 30 mV when the HV is turned off.	+	The noise level increases on Zyad to 25 +/- 5 mV when the HV is turned off while Tareq's is 12 +/- 5 mV.

	[[File:HpGe_LDS_Tareq_Zyad_C6-19-2014.png \| 200 px]]		[[File:HpGe_LDS_Tareq_Zyad_C6-19-2014.png \| 200 px]]

@@ Line 12: / Line 12: @@
 The HV on both was set to 2200 by slowing increasing the voltage from zero while keeping the detector output DC offset from exceeding 100 mV.  Zyad's DC output is very sensitive in the first 500 Volts or so.  Ortec's suggested operating voltage for Zyad +3500 Volts and for Tareq +3000 Volts.
-[[File:HpGe_LDS_Tareq_Zyad_B6-19-2014.png | 200 px]]
+[[File:HpGe_LDS_Tareq_Zyad_6-19-2014.png | 200 px]][[File:HpGe_LDS_Tareq_Zyad_B6-19-2014.png | 200 px]]
-Noise level increases on Zyad when HV is zero
 [[File:HpGe_LDS_Tareq_Zyad_C6-19-2014.png | 200 px]]

← Older revision		Revision as of 22:04, 19 June 2014
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		+	= Setup=

		+	==6/19/14==

−	HV=2200	+	Looked at the raw output of both HpGe detectors setup in the LDS.
		+
		+	Their names are Zyad and Tareq.
		+
		+	Zyad is a 90+% efficiency HpGe detector.
		+
		+	The HV on both was set to 2200 by slowing increasing the voltage from zero while keeping the detector output DC offset from exceeding 100 mV. Zyad's DC output is very sensitive in the first 500 Volts or so. Ortec's suggested operating voltage for Zyad +3500 Volts and for Tareq +3000 Volts.

	[[File:HpGe_LDS_Tareq_Zyad_6-19-2014.png \| 200 px]]		[[File:HpGe_LDS_Tareq_Zyad_6-19-2014.png \| 200 px]]

← Older revision		Revision as of 22:00, 19 June 2014
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−
−	~~Coincidence Photon Activation Analysis in the LDS~~