HRRL 4-13-09 - Revision history

Oborn: /* 4/16/09 */

2009-06-10T22:19:42Z

4/16/09

2009-06-10T22:18:52Z

4/16/09

2009-06-10T21:39:12Z

4/16/09

2009-06-10T21:37:04Z

4/16/09

2009-06-10T21:35:48Z

4/16/09

2009-06-10T21:35:06Z

4/16/09

2009-05-08T16:29:24Z

DC efficiency

2009-05-08T16:23:05Z

DC efficiency

2009-05-08T16:22:03Z

ADC Results

2009-05-01T00:54:28Z

ADC Results

@@ Line 144: / Line 144: @@
 [[Image:ODU_R1eff-vs-HV.png|300 px]]
-Our plateaus near a sense wire HV of 1400 Volts and ODU saw a plateau near a Sense-Field high voltage of 2250 => Sense HV around 1400 volts like ours.
+Our baby chamber measurements suggests a plateau near a sense wire HV of 1400 Volts and ODU saw a plateau near a Sense-Field high voltage of 2250 => Sense HV around 1400 volts like ours.
 ==DC + FSC1 Coinc==

@@ Line 144: / Line 144: @@
 [[Image:ODU_R1eff-vs-HV.png|300 px]]
-Our plateaus near a sense wire HV of 1400 Volts and ODU saw a plateau near a Sense-Field high voltage of 220 => Sense HV around 1400 volts like ours.
+Our plateaus near a sense wire HV of 1400 Volts and ODU saw a plateau near a Sense-Field high voltage of 2250 => Sense HV around 1400 volts like ours.
 ==DC + FSC1 Coinc==

← Older revision		Revision as of 21:39, 10 June 2009
Line 143:		Line 143:

	[[Image:ODU_R1eff-vs-HV.png\|300 px]]		[[Image:ODU_R1eff-vs-HV.png\|300 px]]
		+
		+	Our plateaus near a sense wire HV of 1400 Volts and ODU saw a plateau near a Sense-Field high voltage of 220 => Sense HV around 1400 volts like ours.

	==DC + FSC1 Coinc==		==DC + FSC1 Coinc==

@@ Line 140: / Line 140: @@
 ;Plateau Curve  [[Image:Forest_IoniztionChamberOperatingRegions.jpg|300px]]
-ODU Efficiency curve
+ODU Efficiency curve.  HV = Sense - Field
 [[Image:ODU_R1eff-vs-HV.png|300 px]]

@@ Line 140: / Line 140: @@
 ;Plateau Curve  [[Image:Forest_IoniztionChamberOperatingRegions.jpg|300px]]
-ODu Efficiency curve
+ODU Efficiency curve
-[[Image:ODU_R1eff-vs-HV.png]]
+[[Image:ODU_R1eff-vs-HV.png|300 px]]
 ==DC + FSC1 Coinc==

← Older revision		Revision as of 21:35, 10 June 2009
Line 140:		Line 140:
	;Plateau Curve [[Image:Forest_IoniztionChamberOperatingRegions.jpg\|300px]]		;Plateau Curve [[Image:Forest_IoniztionChamberOperatingRegions.jpg\|300px]]

		+	ODu Efficiency curve
		+
		+	[[Image:ODU_R1eff-vs-HV.png]]

	==DC + FSC1 Coinc==		==DC + FSC1 Coinc==

← Older revision		Revision as of 16:29, 8 May 2009
Line 618:		Line 618:

	<math>\sigma _{\bar{X}} = \sqrt{\frac{1}{\Sigma _i \sigma_i^{-2}}} = \sqrt{\frac{1}{(\frac{1}{\sqrt{17642}})^{-2} + (\frac{1}{\sqrt{17679}})^{-2} + (\frac{1}{\sqrt{17631}})^{-2}}} = 0.4 %</math>		<math>\sigma _{\bar{X}} = \sqrt{\frac{1}{\Sigma _i \sigma_i^{-2}}} = \sqrt{\frac{1}{(\frac{1}{\sqrt{17642}})^{-2} + (\frac{1}{\sqrt{17679}})^{-2} + (\frac{1}{\sqrt{17631}})^{-2}}} = 0.4 %</math>
		+
		+
		+	Puts cuts on ADC data until rate is the same as with scaler data then overlay position measurements plots

	====DC efficiency====		====DC efficiency====

← Older revision		Revision as of 16:23, 8 May 2009
Line 620:		Line 620:

	====DC efficiency====		====DC efficiency====
		+
		+	Plot histogram for all runs to check if pedestal is in same location.

	Some ADC runs had 3 scintillators in coincidence. Use this to check DC efficiency. plot as function of HV the ratio of DC hits to coincidences. use the ADC value for the wire output to do several different signal thresholds.		Some ADC runs had 3 scintillators in coincidence. Use this to check DC efficiency. plot as function of HV the ratio of DC hits to coincidences. use the ADC value for the wire output to do several different signal thresholds.

← Older revision		Revision as of 16:22, 8 May 2009
Line 618:		Line 618:

	<math>\sigma _{\bar{X}} = \sqrt{\frac{1}{\Sigma _i \sigma_i^{-2}}} = \sqrt{\frac{1}{(\frac{1}{\sqrt{17642}})^{-2} + (\frac{1}{\sqrt{17679}})^{-2} + (\frac{1}{\sqrt{17631}})^{-2}}} = 0.4 %</math>		<math>\sigma _{\bar{X}} = \sqrt{\frac{1}{\Sigma _i \sigma_i^{-2}}} = \sqrt{\frac{1}{(\frac{1}{\sqrt{17642}})^{-2} + (\frac{1}{\sqrt{17679}})^{-2} + (\frac{1}{\sqrt{17631}})^{-2}}} = 0.4 %</math>
		+
		+	====DC efficiency====
		+
		+	Some ADC runs had 3 scintillators in coincidence. Use this to check DC efficiency. plot as function of HV the ratio of DC hits to coincidences. use the ADC value for the wire output to do several different signal thresholds.
		+
		+
		+

	[http://wiki.iac.isu.edu/index.php/Qweak Go Back] [[Qweak]]		[http://wiki.iac.isu.edu/index.php/Qweak Go Back] [[Qweak]]

@@ Line 617: / Line 617: @@
 ;Example Calculating Weighted Error
-<math>\sigma _{\bar{X}} = \sqrt{\frac{1}{\Sigma _i \sigma_i^{-2}}} = \sqrt{\frac{1}{(\frac{1}{\sqrt{17642}})^{-2} + (\frac{1}{\sqrt{17679}})^{-2} + (\frac{1}{\sqrt{17631}})^{-2}}}</math>
+<math>\sigma _{\bar{X}} = \sqrt{\frac{1}{\Sigma _i \sigma_i^{-2}}} = \sqrt{\frac{1}{(\frac{1}{\sqrt{17642}})^{-2} + (\frac{1}{\sqrt{17679}})^{-2} + (\frac{1}{\sqrt{17631}})^{-2}}} = 0.4 %</math>
 [http://wiki.iac.isu.edu/index.php/Qweak Go Back] [[Qweak]]