PePPO 05302012 - Revision history

Setisadi at 02:07, 27 July 2012

2012-07-27T02:07:56Z

Foretony: /* Data Analysis */

2012-06-12T03:52:36Z

Data Analysis

Foretony: Created page with '=Runlist= {| border="1" |cellpadding="20" cellspacing="0 |- | || Signal channel || HV dac || HV (V) || readback |- | Run No. || Run Time (s) || e- Current (n…'

2012-06-12T00:25:26Z

Created page with '=Runlist= {| border="1" |cellpadding="20" cellspacing="0 |- | || Signal channel || HV dac || HV (V) || readback |- | Run No. || Run Time (s) || e- Current (n…'

New page

=Runlist=
{| border="1" |cellpadding="20" cellspacing="0
|-
| || Signal channel || HV dac || HV (V) || readback
|-
| Run No. || Run Time (s) || e- Current (nA) || Converter Target || Mode || DAQ Rate (Hz) || Chromox Target Position
|-
| 5767 || 1566 || 1 || 1 mm thick W || positron || || In
|-
| 5768 || 1763 || 1 || 1 mm thick W || positron || || Out
|-
| 5774 || || 1 || 1 mm thick W || positron || 75 || IN
|-
| 5775 || || 1 || 0.1 mm thick W || positron || 75 || IN
|-
| 5776 || 1408 || 0.5 || 1 mm thick W || positron || 75 || In
|-
| 5778 || 858 || 0.5 || 1 mm thick W || positron || 50 || Out
|-
| 5779 || 1338 || 0.5 || 0.5 mm thick W || positron || 50 || In
|-
|}

=Data Analysis=

==Target IN/OUT==

===Run 5767 & 5768===

[[Image:r5767TarIn_r5768TarOut.png | 400 px]]

===Run 5776 & 5778===

;Tight TDC cits TDC_A1-TDC_A3 < 5 nsec

==Rates-vs- Converter thickness==

{| border="1" |cellpadding="20" cellspacing="0
| Run No. || Run Time (s) || e- Current (nA) || Converter Target || Mode || Chromox Target Position
|-
| 5774 || 489 || 1 || 1 mm thick W || positron ||IN
|-
| 5775 || 347 || 1 || 0.1 mm thick W || positron || IN
|-
| 5776 || 1408 || 0.5 || 1 mm thick W || positron || In
|-
| 5779 || 1338 || 0.5 || 0.5 mm thick W || positron || In
|-
|}

===Run 5774 & 5775===

Calibration: 60 Ch/keV

[[Image:r5774WTar1mm_r5775WTar0p1mm_A1Compare.png | 400 px]]

===Run 5776 & 5779===

Calibration: 60 Ch/keV

[[Image:r5776WTar1mm_r5779WTar0p5mm_A1Compare.png | 400 px]]

[

← Older revision		Revision as of 02:07, 27 July 2012
Line 124:		Line 124:

	[		[
		+	= Run Conditions=
		+
		+	==5775==
		+
		+	Run_type=Annihilation
		+
		+	DAQ_type=Sample
		+
		+	target_type=0.1 mm Tungsten
		+
		+	beam_p0=7.9
		+
		+	beam_current=0.001
		+
		+	spect_p=4.0
		+
		+	HWP_type=IN
		+
		+	jaw_jawL=13
		+
		+	jaw_jawR=-1
		+	spect_current=160
		+
		+	mag_current=+60A
		+
		+	comment_text=Annihilation test in positron mode Thr =30mV AND, 1 nA, Chomox target in
		+
		+
		+	-----
		+
		+	-----
		+
		+	CODA Config : Annih_Sample
		+
		+	Run Number : 5775
		+
		+	==5774==
		+	Run_type=Annihilation
		+
		+	DAQ_type=Sample
		+
		+	target_type=1 mm Tungsten
		+
		+	beam_p0=7.9
		+
		+	beam_current=0.001
		+
		+	spect_p=4.0
		+
		+	HWP_type=IN
		+
		+	jaw_jawL=13
		+
		+	jaw_jawR=-1
		+
		+	spect_current=160
		+
		+	mag_current=+60A
		+
		+	comment_text=Annihilation test in positron mode Thr =30mV AND, 1 nA, Chomox target in
		+
		+
		+	-----
		+
		+	-----
		+
		+	CODA Config : Annih_Sample
		+
		+	Run Number : 5774
		+
		+	==5776==
		+
		+
		+	Run_type=Annihilation
		+
		+	DAQ_type=Sample
		+
		+	target_type=1 mm Tungsten
		+
		+	beam_p0=7.9
		+
		+	beam_current=0.0005
		+
		+	spect_p=4.0
		+
		+	HWP_type=IN
		+
		+	jaw_jawL=13
		+
		+	jaw_jawR=-1
		+
		+	spect_current=160
		+
		+	mag_current=+60A
		+
		+	comment_text=Annihilation test in positron mode Thr =30mV AND, 0.05 nA, Chomox target in
		+
		+
		+
		+
		+	-----
		+
		+	-----
		+
		+	CODA Config : Annih_Sample
		+
		+	Run Number : 5776
		+
		+
		+	== 5779 ==
		+
		+	Run_type=Annihilation
		+
		+	DAQ_type=Sample
		+
		+	target_type=0.5 mm Tungsten
		+
		+	beam_p0=7.9
		+
		+	beam_current=0.0005
		+
		+	spect_p=4.0
		+
		+	HWP_type=IN
		+
		+	jaw_jawL=13
		+
		+	jaw_jawR=-1
		+
		+	spect_current=160
		+
		+	mag_current=+60A
		+
		+	comment_text=Annihilation test in positron mode Thr =30mV AND, 0.05 nA, Chomox target out
		+
		+
		+
		+
		+	-----
		+
		+	-----
		+
		+	CODA Config : Annih_Sample
		+
		+	Run Number : 5779

← Older revision		Revision as of 03:52, 12 June 2012
Line 23:		Line 23:

	=Data Analysis=		=Data Analysis=
		+
		+	==Calibration==
		+
		+
		+	https://positron.jlab.org/wiki/index.php/05232012_AnnihCntr_Calibration#Results
		+
		+
		+	The calibration constants appear to have changed from
		+
		+	511/22230 for Annihlation Detector A1 to 511/29588 (ped subtracted)
		+
		+	511/18192 for Annihlation Detector A3 to 511/13706 (ped subtracted)
		+
		+
		+	Fits to the peaks in run 5440 and 5441 gave the following results
		+
		+	{\| border="1" \|cellpadding="20" cellspacing="0
		+	\|-
		+	\| Energy \|\| A1 Channel \|\| A3 Channel
		+	\|-
		+	\| 0 \|\| 40002 \|\|41709.5
		+	\|-
		+	\| 511 \|\| 69655.5 \|\| 55603.8
		+	\|-
		+	\| 1170 \|\| 100127 \|\| 71544.4
		+	\|-
		+	\| 1270 \|\| 104293 \|\| 74165.3
		+	\|-
		+	\| 1330 \|\| 106243 \|\| 75307.7
		+	\|}
		+
		+
		+	The high energy points overweight the linear fit for that energy region so I removed the 1179 and 1270 line from the fit.
		+	For A1 :
		+
		+	<pre>
		+	slope=50.1811 +/- 2.10455
		+	y-intercept=41498.3 +/- 1894.94
		+	coerrelation coefficient=0.998246
		+	</pre>
		+	For A3:
		+	<pre>
		+	slope=25.3515 +/- 0.488128
		+	y-intercept=42052.6 +/- 439.513
		+	coerrelation coefficient=0.999628
		+	</pre>
		+
		+	A fit biased by including three 1 MeV lines is
		+	;For A1
		+	<pre>
		+	slope=45.8536 +/- 0.50289
		+	y-intercept=46253.9 +/- 522.854
		+	coerrelation coefficient=0.999941
		+	</pre>
		+	;For A3
		+	<pre>
		+	slope=24.3591 +/- 0.219479
		+	y-intercept=43143.2 +/- 228.192
		+	coerrelation coefficient=0.999961
		+	</pre>
		+

	==Target IN/OUT==		==Target IN/OUT==