Qweak GEM installation log book - Revision history

Foretony: /* Fe-55 Source use */

2013-03-14T15:48:00Z

Fe-55 Source use

2013-03-14T15:47:31Z

Fe-55 Source use

2011-02-07T22:04:47Z

GEM work summary

2011-02-07T22:02:12Z

V1495 Monitor Pin Out

2011-01-07T20:25:17Z

GEM efficiency measurements on 1/2010

2011-01-07T20:23:27Z

GEM efficiency measurements on 1/2010

2011-01-07T20:23:09Z

GEM efficiency measurements on 1/2010

2011-01-07T20:21:53Z

GEM Scintillators

2011-01-01T22:42:25Z

Urim Readout Card Map

2010-12-20T15:31:49Z

Threshold setting -vs- HV

@@ Line 454: / Line 454: @@
 TORI Data (1999)
 Gammas from 55Fe (2.73 y 3)
 Eg (keV)    	Ig (%)    	Decay mode
@@ Line 479: / Line 481: @@
 .539  	8.5E-08 5  	Mn Kb4

← Older revision		Revision as of 15:47, 14 March 2013
Line 434:		Line 434:
	==Fe-55 Source use==		==Fe-55 Source use==

		+
		+	Iron-55 decays via electron capture to manganese-55 with a half-life of 2.737 years.
		+	60% of the time an Auger electron is emitted.
		+	8.2% of the time a 5.9 keV photon is emitted
		+	2.9% of the time a 6.5 keV photon is emitted
		+
		+	A 126 keV photon comes off with a relative intensity of 1E-7.

	Activity of Gamma, x-ray source. <math>300 \mu C \times \left ( 3.7 \times 10^{10} decays/sec \right ) = 1.1 \times 10^7 decays/sec = A_0</math> as of 6/24/04.		Activity of Gamma, x-ray source. <math>300 \mu C \times \left ( 3.7 \times 10^{10} decays/sec \right ) = 1.1 \times 10^7 decays/sec = A_0</math> as of 6/24/04.

← Older revision		Revision as of 22:04, 7 February 2011
Line 2,033:		Line 2,033:

	11/14/10: Return to repair Urim , started sparking when Armenian group turned it on		11/14/10: Return to repair Urim , started sparking when Armenian group turned it on
		+
	11/22/10: Repaired Urim takes bem and is sensitive to background radiation in Hall C near the G0 patch panel		11/22/10: Repaired Urim takes bem and is sensitive to background radiation in Hall C near the G0 patch panel

← Older revision		Revision as of 22:02, 7 February 2011
Line 2,018:		Line 2,018:

	[[File:V1495MonitorPinOuts.png\| 200 px]]		[[File:V1495MonitorPinOuts.png\| 200 px]]
		+
		+
		+	=GEM work summary=
		+
		+	5/12/10 : One detector in doghouse with signals, one detector was mounted to double check rotation clearance by hand rotation (break board might hit bolts)
		+
		+	8/19/10: Nauvoo damaged either by beam or mishap on charge collector, charge collector sags more than Urim now
		+
		+	8/24/10: expected cosmic rate measured using Urim
		+
		+	8/30/10 nauvoo working.
		+
		+	9/29/10: Return to find Nauvoo sparking and Urim working
		+
		+	11/14/10: Return to repair Urim , started sparking when Armenian group turned it on
		+	11/22/10: Repaired Urim takes bem and is sensitive to background radiation in Hall C near the G0 patch panel
		+
		+	12/13/10: gas not flowing on Urim but it was working after flowing for 1 day, Nauvoo returned to ISU to fix damage to charge collector

	[[Qweak_Installation#Installation_Progress_Daily_Log]]		[[Qweak_Installation#Installation_Progress_Daily_Log]]

@@ Line 1,756: / Line 1,756: @@
 [[File:LDSExpSetUp.jpg|350px]]
-[[File:TwoPMTsandGEMCoincidence29-03-2010.png|250px]][[File:TwoPMTsandGEMCoincidence29-03-2010_1.png|250px]]
+[[File:TwoPMTsandGEMCoincidence29-03-2010Gate.png|250px]][[File:TwoPMTsandGEMCoincidence29-03-2010GateandTimingFilterAmp.png|250px]]
-[[File:Efficiency_of_detectors_PMTCoincidenceRate_23-01-2010.jpg | 200 px]]
+[[File:Efficiency_of_detectors_PMTCoincidenceRate_23-01-2010.jpg | 200 px]][[File:Efficiency_of_GEM_to_respect_of_DC_Rate_23-01-2010.jpg | 200px]]
 =Run plan for next time with beam=

@@ Line 1,758: / Line 1,758: @@
 [[File:TwoPMTsandGEMCoincidence29-03-2010.png|250px]][[File:TwoPMTsandGEMCoincidence29-03-2010_1.png|250px]]
-https://wiki.iac.isu.edu/index.php/File:Efficiency_of_detectors_PMTCoincidenceRate_23-01-2010.jpg
+[[File:File:Efficiency_of_detectors_PMTCoincidenceRate_23-01-2010.jpg | 200 px]]
-https://wiki.iac.isu.edu/index.php/File:Efficiency_of_GEM_to_respect_of_DC_Rate_23-01-2010.jpg
+[[File:File:Efficiency_of_GEM_to_respect_of_DC_Rate_23-01-2010.jpg | 200px]]
 =Run plan for next time with beam=

← Older revision		Revision as of 20:21, 7 January 2011
Line 1,751:		Line 1,751:

	The GEM HV power supply channels HV0 and HV1 go to Scint2 and Scint3 respectively. Scint 3 is the downstream scintillator		The GEM HV power supply channels HV0 and HV1 go to Scint2 and Scint3 respectively. Scint 3 is the downstream scintillator
		+
		+	=GEM efficiency measurements on 1/2010=
		+
		+	[[File:LDSExpSetUp.jpg\|350px]]
		+
		+	[[File:TwoPMTsandGEMCoincidence29-03-2010.png\|250px]][[File:TwoPMTsandGEMCoincidence29-03-2010_1.png\|250px]]
		+
		+	https://wiki.iac.isu.edu/index.php/File:Efficiency_of_detectors_PMTCoincidenceRate_23-01-2010.jpg
		+
		+	https://wiki.iac.isu.edu/index.php/File:Efficiency_of_GEM_to_respect_of_DC_Rate_23-01-2010.jpg

	=Run plan for next time with beam=		=Run plan for next time with beam=

@@ Line 2,006: / Line 2,006: @@
 | 6 || A || 83 || 6a || 98 || 16
 |}
 [[Qweak_Installation#Installation_Progress_Daily_Log]]