Difference between revisions of "IAC LeadFlourideCherenkovCrystalTests 5-09"

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Line 87: Line 87:
 
-------------------------------------------------------------------------------------------------------------------------------------------------------
 
-------------------------------------------------------------------------------------------------------------------------------------------------------
  
−
3) Irradiation batch 1:4 old ``reference'' blocks -Blocks 15, 27, 109 and 89.
+
3) Irradiation batch 1:4 old blocks -Blocks 15, 27, 109 and 89. Here is the transmission before irradiation:
 +
 
 +
[[Image:B15averagebeforeexp.jpg | 200 px]] [[Image:B39averagebeforeexp.jpg | 200 px]] [[Image:B109averagebeforeexp.jpg | 200 px]][[Image:B27averagemay11beforeexp.jpg | 200 px]]
  
 
;Accelerator Settings
 
;Accelerator Settings
Line 109: Line 111:
  
 
Blocks 200, 201, 202, 203.
 
Blocks 200, 201, 202, 203.
 +
 +
Here is the transmission before irradiation -
 +
 +
[[Image:B200averagebeforeexp.jpg | 200 px]] [[Image:B201averagebeforeexp.jpg | 200 px]] [[Image:B202averagebeforeexp.jpg | 200 px]] [[Image:B203averagebeforeexp.jpg | 200 px]]
  
 
Beam on: 9:15 AM
 
Beam on: 9:15 AM
Line 126: Line 132:
 
o Beam off at 1:00 PM.
 
o Beam off at 1:00 PM.
  
−
o Block 100 will be used as a reference for transmission measurements for the rest of the week.
+
o Pulse count: 1412543
 +
 
 +
o Block 100 will be used as a reference for transmission measurements for the rest of the week. Here is its transmission:
 +
 
 +
[[Image:B100averagebeforeexp.jpg | 200 px]]
  
 
o O-scope data: C:\My Computer\Current Normalization Data\20090512\_2-Ch1-0001.dat-_2-Ch1-0843.dat
 
o O-scope data: C:\My Computer\Current Normalization Data\20090512\_2-Ch1-0001.dat-_2-Ch1-0843.dat
−
 
+
--------------------------------------------------------------------------------------------------------------------------------------
 
2) Irradiation batch 1 (Blocks 15, 27, 109 and 89) removed from hall (7:45 AM) and transmission measured.
 
2) Irradiation batch 1 (Blocks 15, 27, 109 and 89) removed from hall (7:45 AM) and transmission measured.
  
Line 140: Line 150:
 
Axis 3 - -111750 (Vertical)
 
Axis 3 - -111750 (Vertical)
  
−
Bleaching of batch 2: 29 hours
+
-------------------------------------------------------------------------------------------------------------------------------------
−
 
+
3) Irradiation batch 3:4 new blocks -Blocks 204, 205, 206, 207.
−
3) Irradiation batch 3:4 new blocks
 
  
 
;Accelerator Settings
 
;Accelerator Settings
Line 158: Line 167:
 
o Beam on 1:09 PM
 
o Beam on 1:09 PM
  
 +
o 2:19 PM -no optical bleach yet.  Block 89 shows gains in transmission after 2.5 hour irradiation.
  
−
Irradiation batch \#4:&4 new blocks
+
o Beam off at 2:23 PM
  
−
Irradiation batch \#5:&4 new blocks
+
Pulse count: 455378.
  
−
Irradiation {\bf batch \#2}:&4 new blocks
+
O-scope data: C:\My Computer\Current Normalization Data\20090512\_2-Ch1-0845.dat-0853.dat
  
−
Bleaching of batch \#2:&24 hours
+
o Beam on 2:28 PM
 +
 
 +
o Beam off 5:00 PM
 +
 
 +
Pulse count: 1379080
 +
 
 +
O-scope data: C:\My Computer\Current Normalization Data\20090512\_2-Ch1-0854.dat -0862.dat
 +
 
 +
4) Bleach blocks 200, 201, 202, 203 5:15 PM.
 +
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 +
Transmission Measurements:
  
 
==Day 3==
 
==Day 3==
 +
 +
1) Irradiate blocks 208, 209, 210, 211 (new blocks)
 +
 +
;Accelerator Settings
 +
{| border="1"
 +
| beam energy || 20 MeV
 +
|-
 +
| Rep Rate: ||  100 Hz
 +
|-
 +
| I_peak:    || 111 mA/pulse
 +
|-
 +
| pulse width:|| 0.1 <math>\mu</math>s (100 ns)
 +
|-
 +
|}
 +
 +
o Beam on 7:00 AM
 +
 +
o Beam off 10:30 AM
 +
 +
Count: 1144922 Pulses.
 +
 +
 +
2) Irradiate new blocks 212, 213, 214, 215.
 +
  
 
;Accelerator Settings
 
;Accelerator Settings
Line 173: Line 217:
 
| beam energy || 20 MeV
 
| beam energy || 20 MeV
 
|-
 
|-
−
| Rep Rate: ||  30 Hz
+
| Rep Rate: ||  100 Hz
 
|-
 
|-
−
| I_peak:    || 60 mA/pulse
+
| I_peak:    || 111 mA/pulse
 
|-
 
|-
 
| pulse width:|| 0.1 <math>\mu</math>s (100 ns)
 
| pulse width:|| 0.1 <math>\mu</math>s (100 ns)
Line 181: Line 225:
 
|}
 
|}
  
 +
o Beam on 10:40
 +
 +
o Beam off 11:30 -Suspicion of misaligned beam.
 +
 +
3) Beam scan 12:35 PM
 +
 +
 +
O-scope data: C:\My Computer\Current Normalization Data\20090513\_2-Ch1-0863.dat - _2-Ch1-1105.dat
  
−
1.) Irradiate Silicon detector for 2-3 hours
+
o Beam back on 1:10 PM
  
−
Minimum ionizing particles deposit 0.19 MeV of energy <math>(3\cdot
+
4) Remove blocks 200, 201, 202, 203 from blue light. 11:00 AM.
−
10^{-14}</math>/,J). If we want to irradiate <math>10^9/20</math> particles/s, that makes
 
−
<math>1.5\cdot 10^{-6}</math>J/s. Taking into account the strip size and the heat
 
−
capacity of Si (19.8 J/mol/K), this makes a temperature variation of 0.045
 
−
K/min (negligeable).
 
  
 +
5) Bleach blocks 204, 405, 206, 207 8:55 AM.
  
−
2.) Irradiation PB crystal batch \#2 then Bleaching of batch #2 for 38 hours
+
o 1:46 PM -Green Pick-up Loop was not tracking before this time.  Was previously set to 1 M-ohm input as well.  Is now on 50-ohm.  O-scope online & recording pulse data.  Invert off.
 +
 
 +
o Beam off 5:05 PM
 +
 
 +
Count: 1057765.
 +
 
 +
Oscope data: C:\My Computer\Current Normalization Data\_2-Ch1-1106.dat -3068.dat
 +
 
 +
6) Bleach blocks 208 - 215 3:15
 +
7) Bleach blocks 89, 15, 27, 109 4:25
 +
8) Bleach blocks 200-203 5:35 PM
  
 
== Day 4 ==
 
== Day 4 ==
−
Irradiation batch \#6:&4 new blocks\\
+
1) Irradiate silicon detector at z = 16 cm
−
Irradiation batch \#7:&4 new blocks\\
+
 
−
Irradiation batch \#8:&4 new blocks\\
+
;Accelerator Settings
 +
{| border="1"
 +
| beam energy || 20 MeV
 +
|-
 +
| Rep Rate: ||  100 Hz
 +
|-
 +
| I_peak:    || 111 mA/pulse
 +
|-
 +
| pulse width:|| 0.1 <math>\mu</math>s (100 ns)
 +
|-
 +
|}
 +
 
 +
o Beam on 8:30 AM
 +
o Beam off 11:00 AM
 +
 
 +
2) Irradiate 4 blocks. 200, 201, 208, 211.
 +
 
 +
;Accelerator Settings
 +
{| border="1"
 +
| beam energy || 20 MeV
 +
|-
 +
| Rep Rate: ||  100 Hz
 +
|-
 +
| I_peak:    || 111 mA/pulse
 +
|-
 +
| pulse width:|| 0.1 <math>\mu</math>s (100 ns)
 +
|-
 +
|}
 +
 
 +
o Beam on 11:10 AM
 +
 
 +
o Beam off 2:20 PM
 +
 
 +
Count: 1159068.
 +
 
 +
O-scope data: C:\My Computer\Current Normalization Data|20090514\_2-Ch1-3742.dat - _2-Ch1-3761.dat
 +
 
 +
3) Irradiate four blocks. 216, 217, 218, 219.
 +
 
 +
;Accelerator Settings
 +
{| border="1"
 +
| beam energy || 20 MeV
 +
|-
 +
| Rep Rate: ||  100 Hz
 +
|-
 +
| I_peak:    || 111 mA/pulse
 +
|-
 +
| pulse width:|| 0.1 <math>\mu</math>s (100 ns)
 +
|-
 +
|}
 +
 
 +
o Beam on 2:29 PM.
 +
 
 +
o Beam off 5:01 PM
 +
 
 +
Count: 909618
 +
 
 +
O-scope data: C:\My Computer\Current Normalization Data\20090514\_2-Ch1-3762.dat -_2-Ch1-3791.dat
  
 
== Day 5 ==
 
== Day 5 ==
  
−
Irradiation {\bf batch \#2}\\
+
1) Irradiate four blocks. 200, 201, 209, 210.
−
\multicolumn{2}{l}{Silicon test}\\
+
 
−
Day 6 -- Bleaching of batch \#2:&24h\\
+
;Accelerator Settings
 +
{| border="1"
 +
| beam energy || 20 MeV
 +
|-
 +
| Rep Rate: ||  100 Hz
 +
|-
 +
| I_peak:    || 111 mA/pulse
 +
|-
 +
| pulse width:|| 0.1 <math>\mu</math>s (100 ns)
 +
|-
 +
|}
 +
 
 +
o Beam on 7:30 AM
 +
 
 +
o Beam off 10:20 AM
 +
 
 +
O-scope data: C:\My Computer\Current Normalization Data\20090515\_2-Ch1-3937.dat - 3983.dat
 +
 
 +
2) Irradiate 212, 213, 214, 215.
 +
 
 +
;Accelerator Settings
 +
{| border="1"
 +
| beam energy || 20 MeV
 +
|-
 +
| Rep Rate: ||  100 Hz
 +
|-
 +
| I_peak:    || 111 mA/pulse
 +
|-
 +
| pulse width:|| 0.1 <math>\mu</math>s (100 ns)
 +
|-
 +
|}
 +
 
 +
o Beam on 11:10 AM
  
 
=5/11/09=
 
=5/11/09=

Latest revision as of 17:44, 15 May 2009

http://clasweb.jlab.org/wiki/index.php/Hall_A_IAC_Tests


Previous Tests: IAC_LeadFlourideCherenkovCrystalTests

Run Plan

Summary

Task Time Budget
Beam setup 0.5 days
Testing 20 new blocks 2.5 days
Silicon test 1.0 day
Bleaching/Re-irradiation test 0.5-1 day
Testing old blocks 12 blocks/day


Accelerator Settings
beam energy 20 MeV
Rep Rate: 30 Hz
I_peak: 60 mA/pulse
pulse width: 0.1 [math]\mu[/math]s (100 ns)

Day 0

Experiment Set-up Tasks:

1) Translator table -positioned in front of 0 degree exit port and manual operation (50,000/inch).

2) Faraday Cup - positioned at z = 30 cm, clipped (alligator to BNC & grounded), connected to cable C6, terminated into Channel 1 on the scope.

3) Green pick-up loop -Sits freely atop poly blocks in front of exit window with poly spacers between loop and exit window to prevent grounding, connected to cable C7, terminated into channel 3 (?) on scope (re-check this on morning of Day 1).

4) Fluke multimeter & camera set-up for real-time temperature monitoring - camera positioned and focused, connected via cable C5 to DAQ monitor.

5) Glass plate -unable to locate small size plate on Day 0, will look again morning of Day 1. Beam spot size measurement not crucial given properly operating beam scan software.

6) Beam scan -Brian is troubleshooting this software, will show Adrianne how to use the morning of Day 1.


Day 1

Beam setup & 2-3 hours

11:25 AM -

Beamscan9.6x9.6.5.09.JPG

12:00 PM -

Beamscan9.6x9.6cm.JPG


1) Shoot glass plate at 30cm from exit port

2) Temperature test with 1 old block

Accelerator Settings
beam energy 20 MeV
Rep Rate: 100 Hz
I_peak: 111 mA/pulse
pulse width: 0.1 [math]\mu[/math]s (100 ns)

23 deg C at start 33 max at finish -1 hour 40 min beam on.

Total count on Ortec counter -361931

Oscope data: C:\My Computer\Current Normalization\20090511\pbf2irradtemprun-Ch1-003.dat - pbf2irradtemprun-int.meas

3) Irradiation batch 1:4 old blocks -Blocks 15, 27, 109 and 89. Here is the transmission before irradiation:

B15averagebeforeexp.jpg B39averagebeforeexp.jpg B109averagebeforeexp.jpgB27averagemay11beforeexp.jpg

Accelerator Settings
beam energy 20 MeV
Rep Rate: 100 Hz
I_peak: 111 mA/pulse
pulse width: 0.1 [math]\mu[/math]s (100 ns)

2.5 hours beam on.

O-scope data: C:\My Computer\Current Normalization\20090511\pbf2irrad1strunday1_1-Ch1.meas-9999.dat

Day 2

1) Irradiation batch 2:4 new blocks

Blocks 200, 201, 202, 203.

Here is the transmission before irradiation -

B200averagebeforeexp.jpg B201averagebeforeexp.jpg B202averagebeforeexp.jpg B203averagebeforeexp.jpg

Beam on: 9:15 AM

Accelerator Settings
beam energy 20 MeV
Rep Rate: 100 Hz
I_peak: 111 mA/pulse
pulse width: 0.1 [math]\mu[/math]s (100 ns)

o Beam off at 1:00 PM.

o Pulse count: 1412543

o Block 100 will be used as a reference for transmission measurements for the rest of the week. Here is its transmission:

B100averagebeforeexp.jpg

o O-scope data: C:\My Computer\Current Normalization Data\20090512\_2-Ch1-0001.dat-_2-Ch1-0843.dat

2) Irradiation batch 1 (Blocks 15, 27, 109 and 89) removed from hall (7:45 AM) and transmission measured.

Translator table origin @ exit window:

Axis 1 - 0 (beamline)

Axis 2 - -14925 (Horizontal)

Axis 3 - -111750 (Vertical)

3) Irradiation batch 3:4 new blocks -Blocks 204, 205, 206, 207.

Accelerator Settings
beam energy 20 MeV
Rep Rate: 100 Hz
I_peak: 111 mA/pulse
pulse width: 0.1 [math]\mu[/math]s (100 ns)

o Beam on 1:09 PM

o 2:19 PM -no optical bleach yet. Block 89 shows gains in transmission after 2.5 hour irradiation.

o Beam off at 2:23 PM

Pulse count: 455378.

O-scope data: C:\My Computer\Current Normalization Data\20090512\_2-Ch1-0845.dat-0853.dat

o Beam on 2:28 PM

o Beam off 5:00 PM

Pulse count: 1379080

O-scope data: C:\My Computer\Current Normalization Data\20090512\_2-Ch1-0854.dat -0862.dat

4) Bleach blocks 200, 201, 202, 203 5:15 PM.

Transmission Measurements:

Day 3

1) Irradiate blocks 208, 209, 210, 211 (new blocks)

Accelerator Settings
beam energy 20 MeV
Rep Rate: 100 Hz
I_peak: 111 mA/pulse
pulse width: 0.1 [math]\mu[/math]s (100 ns)

o Beam on 7:00 AM

o Beam off 10:30 AM

Count: 1144922 Pulses.


2) Irradiate new blocks 212, 213, 214, 215.


Accelerator Settings
beam energy 20 MeV
Rep Rate: 100 Hz
I_peak: 111 mA/pulse
pulse width: 0.1 [math]\mu[/math]s (100 ns)

o Beam on 10:40

o Beam off 11:30 -Suspicion of misaligned beam.

3) Beam scan 12:35 PM


O-scope data: C:\My Computer\Current Normalization Data\20090513\_2-Ch1-0863.dat - _2-Ch1-1105.dat

o Beam back on 1:10 PM

4) Remove blocks 200, 201, 202, 203 from blue light. 11:00 AM.

5) Bleach blocks 204, 405, 206, 207 8:55 AM.

o 1:46 PM -Green Pick-up Loop was not tracking before this time. Was previously set to 1 M-ohm input as well. Is now on 50-ohm. O-scope online & recording pulse data. Invert off.

o Beam off 5:05 PM

Count: 1057765.

Oscope data: C:\My Computer\Current Normalization Data\_2-Ch1-1106.dat -3068.dat

6) Bleach blocks 208 - 215 3:15 7) Bleach blocks 89, 15, 27, 109 4:25 8) Bleach blocks 200-203 5:35 PM

Day 4

1) Irradiate silicon detector at z = 16 cm

Accelerator Settings
beam energy 20 MeV
Rep Rate: 100 Hz
I_peak: 111 mA/pulse
pulse width: 0.1 [math]\mu[/math]s (100 ns)

o Beam on 8:30 AM o Beam off 11:00 AM

2) Irradiate 4 blocks. 200, 201, 208, 211.

Accelerator Settings
beam energy 20 MeV
Rep Rate: 100 Hz
I_peak: 111 mA/pulse
pulse width: 0.1 [math]\mu[/math]s (100 ns)

o Beam on 11:10 AM

o Beam off 2:20 PM

Count: 1159068.

O-scope data: C:\My Computer\Current Normalization Data|20090514\_2-Ch1-3742.dat - _2-Ch1-3761.dat

3) Irradiate four blocks. 216, 217, 218, 219.

Accelerator Settings
beam energy 20 MeV
Rep Rate: 100 Hz
I_peak: 111 mA/pulse
pulse width: 0.1 [math]\mu[/math]s (100 ns)

o Beam on 2:29 PM.

o Beam off 5:01 PM

Count: 909618

O-scope data: C:\My Computer\Current Normalization Data\20090514\_2-Ch1-3762.dat -_2-Ch1-3791.dat

Day 5

1) Irradiate four blocks. 200, 201, 209, 210.

Accelerator Settings
beam energy 20 MeV
Rep Rate: 100 Hz
I_peak: 111 mA/pulse
pulse width: 0.1 [math]\mu[/math]s (100 ns)

o Beam on 7:30 AM

o Beam off 10:20 AM

O-scope data: C:\My Computer\Current Normalization Data\20090515\_2-Ch1-3937.dat - 3983.dat

2) Irradiate 212, 213, 214, 215.

Accelerator Settings
beam energy 20 MeV
Rep Rate: 100 Hz
I_peak: 111 mA/pulse
pulse width: 0.1 [math]\mu[/math]s (100 ns)

o Beam on 11:10 AM

5/11/09

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