Difference between revisions of "PePPO 03242012"

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{| border="1"  |cellpadding="20" cellspacing="0  
 
{| border="1"  |cellpadding="20" cellspacing="0  
 
|-
 
|-
−
|[[Image:03242012_V895_DoublPuls.png | 200 px]]
+
|[[Image:03242012_V895_DoublPuls.png | 200 px]] || [[Image:Run2905_400Puls.png | 200 px]]
 
|-
 
|-
−
|  The V895 "Maj" output is shown on Ch1 along with the NaI signal which was discriminated by it
+
|  The V895 "Maj" output is shown on Ch1 along with the NaI signal which was discriminated by it || You can see some pulses are measured after the pulse peak because of multiple hits out of the discriminator
 
|}
 
|}
  
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{| border="1"  |cellpadding="20" cellspacing="0  
 
{| border="1"  |cellpadding="20" cellspacing="0  
 
|-
 
|-
−
|[[Image:03242012_V895_LongrPuls.png | 200 px]]
+
|[[Image:03242012_V895_LongrPuls.png | 200 px]] || [[Image:Run4079_1000Puls.png | 200 px]]
 
|-
 
|-
−
|  I took the "MAJ" output and used a Phillips Gate Generator to extend the pulse length in order to stop multiple triggers
+
|  I took the "MAJ" output and used a Phillips Gate Generator to extend the pulse length in order to stop multiple triggers ||  Extending thepulse length out of the discriminstor by adding a gate generator removes triggers that happened after the pulse output began.
 
|}
 
|}
 +
 +
 +
[[Image:Run4086_1000Puls.png | 200 px]]
  
 
=Run list=
 
=Run list=
Line 95: Line 98:
 
  T->MakeClass();
 
  T->MakeClass();
  
−
==Run analysis==
+
==Calibration runs==
 +
 
 +
{| border="1"  |cellpadding="20" cellspacing="0
 +
|-
 +
| Run#|| run mode|| Run length (sec)||Source||Trig Logic||  VME discriminator Threshold (mV)|| HV1 (setting/V) A1|| HV2 (setting/V) A3|| PL (setting/ns)|| PTW (setting/ns)
 +
|-
 +
|  4087  || sample  ||  || Co-60 ||  (Det1 OR Det2) ||                      50      ||  2.4/0.888    ||    3.0/1.2      ||      ||
 +
|-
 +
|  4088  || sample  ||  || Na-22 (0.1 uCi)||    (Det1 OR Det2) ||                      50      ||  2.4/0.888    ||    3.0/1.2      ||      ||
 +
|-
 +
|  4089  || sample  ||  || Na-22 (10 uCi)||    (Det1 OR Det2) ||                      50      ||  2.4/0.888    ||    3.0/1.2      ||      ||
 +
|-
 +
|  4090  || sample  ||  || Na-22 (10 uCi)||    (Det1 AND Det2) ||                      50      ||  2.4/0.888    ||    3.0/1.2      ||      ||
 +
|-
 +
|  4090  || sample  ||  || Na-22 (10 uCi)||    (Det1 AND Det2) ||                      50      ||  2.4/0.888    ||    3.0/1.2      ||      ||
 +
|-
 +
|  4092  || sample  ||  || Na-22 (10 uCi)||    (Det1 OR Det2) ||                      50      ||  2.2/0.888    ||    3.0/1.2      ||      ||
 +
|-
 +
|  4093  || sample  ||  || Co-60 (10 uCi)||    (Det1 OR Det2) ||                      50      ||  2.2/0.888    ||    3.0/1.2      ||      ||
 +
|-
 +
|  4094  || sample  ||  || Na-22 (10 uCi)||    (Det1AND Det2) ||                      50      ||  2.2/0.888    ||    3.0/1.2      ||      ||
 +
|}
 +
 
 +
==Deadtime==
  
  
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|  4086  ||  0.05  || 1454 ||  (Det1 AND Det2)  ||    128247/128246
 
|  4086  ||  0.05  || 1454 ||  (Det1 AND Det2)  ||    128247/128246
 
|}
 
|}
 +
 +
==Energy Spectra -vs- Beam current==
 +
 +
 +
 +
{| border="1"  |cellpadding="20" cellspacing="0
 +
|-
 +
| Run#|| Current || Run length (sec) ||Trig Logic||  Integrated Rate Det 1||  Integrated Rate Det 2
 +
|-
 +
|  4082  ||  0.3 || 1421 ||  (Det1 AND Det2 AND SYNC) ||  [[File:r4082_Int15.png | 200 px]] || [[File:r4082_Int16.png | 200 px]]
 +
|-
 +
|  4080  || 1  || 929 ||(Det1 AND Det2 AND SYNC)|| [[File:r4080_Int15.png | 200 px]] || [[File:r4080_Int16.png | 200 px]]
 +
|-
 +
|  4081  || 3  || 523 ||(Det1 AND Det2 AND SYNC)||  [[File:r4081_Int15.png | 200 px]] || [[File:r4081_Int16.png | 200 px]]
 +
|}
 +
 +
 +
I get higher energy photons in the energy spectra as the beam current goes down?
 +
 +
==Integral pics==
 +
 +
 +
 +
{| border="1"  |cellpadding="20" cellspacing="0
 +
|-
 +
| Run#|| Current || Run length (sec) ||Trig Logic||  Integrated Rate Det 1||  Integrated Rate Det 2
 +
|-
 +
|  4073  || 0 || 263||  (Det1 OR Det2) ||       
 +
|-
 +
|  4078  ||  0.3 ||  166 ||  (Det1 AND Det2 AND SYNC)|| 
 +
|-
 +
|  4079  || 0.3 || 309  ||(Det1 AND Det2) ||   
 +
|-
 +
|  4080  || 1  || 929 ||(Det1 AND Det2 AND SYNC)|| [[File:r4080_Int15.png | 200 px]] || [[File:r4080_Int16.png | 200 px]]
 +
|-
 +
|  4081  || 3  || 523 ||(Det1 AND Det2 AND SYNC)||  [[File:r4081_Int15.png | 200 px]] || [[File:r4081_Int16.png | 200 px]]
 +
|-
 +
|  4082  ||  0.3 || 1421 ||  (Det1 AND Det2 AND SYNC) ||  [[File:r4082_Int15.png | 200 px]] || [[File:r4082_Int16.png | 200 px]]
 +
|-
 +
|  4083  || 0.3 ||500 || (Det1 AND Det2)  || 
 +
|-
 +
|  4084  || 0.15 ||448 ||  (Det1 AND Det2)  ||               
 +
|-
 +
|  4085  || 0.15 || 1215 ||  (Det1 AND Det2 AND SYNC)  ||   
 +
|-
 +
|  4086  ||  0.05  || 1454 ||  (Det1 AND Det2)  ||   
 +
|}
 +
 +
 +
[[Positrons]]

Latest revision as of 16:44, 3 April 2012

Oportunistic Beam studies

Trigger Setup

1.) The V895 was double pulsing and its output pulse maxed out at 40 ns



03242012 V895 DoublPuls.png Run2905 400Puls.png
The V895 "Maj" output is shown on Ch1 along with the NaI signal which was discriminated by it You can see some pulses are measured after the pulse peak because of multiple hits out of the discriminator


2.) inserted a gate delay generator to change the V895 output pulse to a microsecond

03242012 V895 LongrPuls.png Run4079 1000Puls.png
I took the "MAJ" output and used a Phillips Gate Generator to extend the pulse length in order to stop multiple triggers Extending thepulse length out of the discriminstor by adding a gate generator removes triggers that happened after the pulse output began.


Run4086 1000Puls.png

Run list

Run# run mode Run length (sec) Beam Target Trig Logic VME discriminator Threshold (mV) HV1 (setting/V) A1 HV2 (setting/V) A3 PL (setting/ns) PTW (setting/ns)
4073 sample 240 off empty (Det1 OR Det2) 200 2.0/0.888 2.7/1.2
4074 sample off/tuning empty (Det1 AND Det2) 50 2.2/0.888 3.0/1.2
4075 sample off/tuning Chromox (Det1 AND Det2 AND SYNC) 50 2.2/0.888 3.0/1.2
4078 sample e+ (0.3 nA) Chromox (Det1 AND Det2 AND SYNC)** 50 2.2/0.888 3.0/1.2
4079 sample e+ (0.3nA) Chromox (Det1 AND Det2)** 50 2.2/0.888 3.0/1.2
4080 sample e+(1 na) Chromox (Det1 AND Det2 AND SYNC)** 50 2.2/0.888 3.0/1.2
4081 sample 540 sec e+(3 na) Chromox (Det1 AND Det2 AND SYNC)** 50 2.2/0.888 3.0/1.2
4082 sample 23 min e+(0.3 na) Chromox (Det1 AND Det2 AND SYNC)** 50 2.2/0.888 3.0/1.2
4083 sample sec e+(0.3 na) Chromox (Det1 AND Det2) 50 2.2/0.888 3.0/1.2
4084 sample sec e+(0.150 na) Chromox (Det1 AND Det2) 50 2.2/0.888 3.0/1.2 Changed discriminator to 50 mv for both channels it was at 20 the scalers will count differently now but the trigger theshold is still the same 100 mV
4085 sample sec e+(0.15 na) Chromox (Det1 AND Det2 AND SYNC) 50 2.2/0.888 3.0/1.2
4086 sample sec e+(0.05 na) Chromox (Det1 AND Det2) 50 2.2/0.888 3.0/1.2


    • stop using V895 and used a discriminator (Phillips 708 set to ~100 mV) and logic unit (phillips 758)

Scope pict traces for TEK0020 -> TEK00

Ch1(Yellow)=Majority

Ch2(Blue)=Beam SYNC

Ch3(Pink)=Annih. Det. #1

Ch4(Green)=Annih. Det. #2

Data Analysis

Replay

running the decoder using the personal account on the opsmdaq0 failed; perhaps due to problems writing its output to the /data disk

to convert a data file into a rood file I needed to login to opsdaq0 under the username "idaq"

then execute the following command 

 /work1/fanchini/decoder/fadc_decode_Source /data/annihilation/Annihilation_Sample_4086.dat

This created the summary text file and root file for run 4086

MakeClass

Load up the ntuple and click over to the "T" tree

Then onthe command line type 

T->MakeClass();

Calibration runs

Run# run mode Run length (sec) Source Trig Logic VME discriminator Threshold (mV) HV1 (setting/V) A1 HV2 (setting/V) A3 PL (setting/ns) PTW (setting/ns)
4087 sample Co-60 (Det1 OR Det2) 50 2.4/0.888 3.0/1.2
4088 sample Na-22 (0.1 uCi) (Det1 OR Det2) 50 2.4/0.888 3.0/1.2
4089 sample Na-22 (10 uCi) (Det1 OR Det2) 50 2.4/0.888 3.0/1.2
4090 sample Na-22 (10 uCi) (Det1 AND Det2) 50 2.4/0.888 3.0/1.2
4090 sample Na-22 (10 uCi) (Det1 AND Det2) 50 2.4/0.888 3.0/1.2
4092 sample Na-22 (10 uCi) (Det1 OR Det2) 50 2.2/0.888 3.0/1.2
4093 sample Co-60 (10 uCi) (Det1 OR Det2) 50 2.2/0.888 3.0/1.2
4094 sample Na-22 (10 uCi) (Det1AND Det2) 50 2.2/0.888 3.0/1.2

Deadtime

Run# Current Run length (sec) Trig Logic L1A/L1
4073 0 263 (Det1 OR Det2) 33895/33896
4078 0.3 166 (Det1 AND Det2 AND SYNC) 950/950
4079 0.3 309 (Det1 AND Det2) 411867/411851
4080 1 929 (Det1 AND Det2 AND SYNC) 9172/9172
4081 3 523 (Det1 AND Det2 AND SYNC) 4420/4420
4082 0.3 1421 (Det1 AND Det2 AND SYNC) 5184/5185
4083 0.3 500 (Det1 AND Det2) 589251/589231
4084 0.15 448 (Det1 AND Det2) 304192/304187
4085 0.15 1215 (Det1 AND Det2 AND SYNC) 2296/2296
4086 0.05 1454 (Det1 AND Det2) 128247/128246

Energy Spectra -vs- Beam current

Run# Current Run length (sec) Trig Logic Integrated Rate Det 1 Integrated Rate Det 2
4082 0.3 1421 (Det1 AND Det2 AND SYNC) R4082 Int15.png R4082 Int16.png
4080 1 929 (Det1 AND Det2 AND SYNC) R4080 Int15.png R4080 Int16.png
4081 3 523 (Det1 AND Det2 AND SYNC) R4081 Int15.png R4081 Int16.png


I get higher energy photons in the energy spectra as the beam current goes down?

Integral pics

Run# Current Run length (sec) Trig Logic Integrated Rate Det 1 Integrated Rate Det 2
4073 0 263 (Det1 OR Det2)
4078 0.3 166 (Det1 AND Det2 AND SYNC)
4079 0.3 309 (Det1 AND Det2)
4080 1 929 (Det1 AND Det2 AND SYNC) R4080 Int15.png R4080 Int16.png
4081 3 523 (Det1 AND Det2 AND SYNC) R4081 Int15.png R4081 Int16.png
4082 0.3 1421 (Det1 AND Det2 AND SYNC) R4082 Int15.png R4082 Int16.png
4083 0.3 500 (Det1 AND Det2)
4084 0.15 448 (Det1 AND Det2)
4085 0.15 1215 (Det1 AND Det2 AND SYNC)
4086 0.05 1454 (Det1 AND Det2)


Positrons

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