Difference between revisions of "Beam Test Jul 12 2012"

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Line 14: Line 14:
  
 
= tune 3 MeV electrons to the 90 degree line=
 
= tune 3 MeV electrons to the 90 degree line=
 +
  
 
==tune to 0 degree line==
 
==tune to 0 degree line==
Line 20: Line 21:
  
 
Take a picture of the beam spot on the YaG and FC1
 
Take a picture of the beam spot on the YaG and FC1
 +
 +
 +
{| border="1"
 +
| Energy Switch || Out (High En Range)
 +
|-
 +
| Solenoid 1    || 7.8  A 
 +
|-
 +
| Solenoid 2      || 3.9    A
 +
|-
 +
| Gun Hor        ||  0.1  A
 +
|-
 +
| Gun Ver        || 0 A
 +
|-
 +
|Output Hor      ||  0.3 A
 +
|-
 +
| Output Ver    || 0.3  A
 +
|-
 +
| Rep Rate    || 6
 +
|-
 +
|  Gun HV  ||  10 (Knob Setting)
 +
|-
 +
|  Gun Grid Voltage  ||  10(Knob Setting)
 +
|-
 +
|  RF frequency  ||2856.268 MHz
 +
|-
 +
|  Modulator HV Power Supply  || 3.66 (Knob Setting)
 +
|-
 +
|  RF macro Pulse Length (FWHM)  || 200 ns
 +
|- 
 +
|Q1  (A)||0
 +
|- 
 +
|Q2  (A)|| 0
 +
|- 
 +
|Q3  (A)|| 0
 +
|- 
 +
|Q4  (A)|| 0
 +
|- 
 +
|Q5  (A)|| 0
 +
|- 
 +
|Q6  (A)|| 0
 +
|-
 +
|}
 +
 +
[[File:hrrl_pos_12jul2012_3MeV_FC0_1.png | 100 px]]
 +
[[File:hrrl_pos_12jul2012_3MeV_FC0_2.png | 100 px]]
 +
[[File:hrrl_pos_12jul2012_3MeV_FC0_3.png | 100 px]]
 +
[[File:hrrl_pos_12jul2012_3MeV_FC0_4.png | 100 px]]
 +
[[File:hrrl_pos_12jul2012_3MeV_FC0_5.png | 100 px]]
 +
[[File:hrrl_pos_12jul2012_3MeV_FC0_6.png | 100 px]]
 +
 +
[[File:hrrl_pos_12jul2012_3MeV_YAG_1.png | 100 px]]
 +
[[File:hrrl_pos_12jul2012_3MeV_YAG_2.png | 100 px]]
 +
[[File:hrrl_pos_12jul2012_3MeV_YAG_3.png | 100 px]]
 +
[[File:hrrl_pos_12jul2012_3MeV_YAG_4.png | 100 px]]
 +
[[File:hrrl_pos_12jul2012_3MeV_YAG_5.png | 100 px]]
 +
[[File:hrrl_pos_12jul2012_3MeV_YAG_6.png | 100 px]]
  
 
== tune to 45 degree line==
 
== tune to 45 degree line==
  
−
Optimize the current to FC2 using Quad 7 and the energy slots
+
Optimize the current to FC2 using Quad 7 and the energy slits
 +
 
 +
Q7 did not help to increase beam current at FC45
 +
 
 +
document the magnet element settings and current to FC2.
 +
 
 +
Transmission from zero Line to 45 degree line is about 4%.
 +
 
 +
=== Increased Reprate to 17 Hz and Minor tune change ===
 +
 
 +
When reprate was at 6 Hz, the current was too low. So, the reprate was increased. to 17 Hz.
  
−
document the settings and current oFC2
 
  
  
 +
{| border="1"
 +
| Energy Switch || Out (High En Range)
 +
|-
 +
| Solenoid 1    || 6.1  A 
 +
|-
 +
| Solenoid 2      || 2.7    A
 +
|-
 +
| Gun Hor        ||  0.1  A
 +
|-
 +
| Gun Ver        || 0 A
 +
|-
 +
|Output Hor      ||  0.4 A
 +
|-
 +
| Output Ver    || 0.4  A
 +
|-
 +
| Rep Rate    || 17
 +
|-
 +
|  Gun HV  ||  10 (Knob Setting)
 +
|-
 +
|  Gun Grid Voltage  ||  10(Knob Setting)
 +
|-
 +
|  RF frequency  ||2856.817 MHz
 +
|-
 +
|  Modulator HV Power Supply  || 3.66 (Knob Setting)
 +
|-
 +
|  RF macro Pulse Length (FWHM)  || 200 ns
 +
|- 
 +
|Q1  (A)||0
 +
|- 
 +
|Q2  (A)|| 0
 +
|- 
 +
|Q3  (A)|| 0
 +
|- 
 +
|Q4  (A)|| 0
 +
|- 
 +
|Q5  (A)|| 0
 +
|- 
 +
|Q6  (A)|| 0
 +
|-
 +
|}
  
 
==tune to 90 degree==
 
==tune to 90 degree==
Line 41: Line 147:
  
 
Do this by transporting beam to each several times.
 
Do this by transporting beam to each several times.
 +
 +
= OTR and YAG comparison =
 +
 +
Beam Tuned to 10 MeV
 +
 +
 +
{| border="1"
 +
| Energy Switch || In (Low En Range)
 +
|-
 +
| Solenoid 1    || 5  A 
 +
|-
 +
| Solenoid 2      || 5.7    A
 +
|-
 +
| Gun Hor        || - 0.1  A
 +
|-
 +
| Gun Ver        || 0 A
 +
|-
 +
|Output Hor      ||  0 A
 +
|-
 +
| Output Ver    || 0  A
 +
|-
 +
| Rep Rate    || 29
 +
|-
 +
|  Gun HV  ||  10 (Knob Setting)
 +
|-
 +
|  Gun Grid Voltage  ||  10 (Knob Setting)
 +
|-
 +
|  RF frequency  ||2856.297 MHz
 +
|-
 +
|  Modulator HV Power Supply  || 4.13 (Knob Setting)
 +
|-
 +
|  RF macro Pulse Length (FWHM)  || 200 ns
 +
|- 
 +
|Q1  (A)|| 1
 +
|- 
 +
|Q2  (A)|| 1
 +
|- 
 +
|Q3  (A)|| 2
 +
|- 
 +
|Q4  (A)|| 0
 +
|- 
 +
|Q5  (A)|| 0
 +
|- 
 +
|Q6  (A)|| 0
 +
|-
 +
|}
 +
 +
We were not be able to see the beam spot. So, we tuned energy up to see the beam.
 +
 +
  I think the reason is becase the pulse length is short. It is 200 ns.
 +
 +
 +
= 11~15 Mev =
 +
 +
We were not be able to see the beam spot. So, we tuned energy up to see the beam. RF power nub was at 4.32, we are not about the energy.
 +
 +
 +
{| border="1"
 +
| Energy Switch || In (Low En Range)
 +
|-
 +
| Solenoid 1    || 8.8  A 
 +
|-
 +
| Solenoid 2      || 5.7    A
 +
|-
 +
| Gun Hor        ||  0  A
 +
|-
 +
| Gun Ver        || 0 A
 +
|-
 +
|Output Hor      ||  0 A
 +
|-
 +
| Output Ver    || 0.4  A
 +
|-
 +
| Rep Rate    || 20
 +
|-
 +
|  Gun HV  ||  10 (Knob Setting)
 +
|-
 +
|  Gun Grid Voltage  ||  10(Knob Setting)
 +
|-
 +
|  RF frequency  ||2856.297 MHz
 +
|-
 +
|  Modulator HV Power Supply  || 4.32 (Knob Setting)
 +
|-
 +
|  RF macro Pulse Length (FWHM)  || 200 ns
 +
|- 
 +
|Q1  (A)||-0.9
 +
|- 
 +
|Q2  (A)|| 0
 +
|- 
 +
|Q3  (A)|| -0.1
 +
|- 
 +
|Q4  (A)|| +0.9
 +
|- 
 +
|Q5  (A)|| 0
 +
|- 
 +
|Q6  (A)||-0.5
 +
|-
 +
|}

Latest revision as of 23:30, 12 July 2012

JAI Camera Triggering

The fall of the TTL pulse triggers the camera.

Camera trigger should arrive at lest 30 micro-second earlier than RF pulse to get the beam image on the OTR.

To do this the first RF pulse trigger should be delayed to trigger the camera for the next RF pulse.

Camera Trig Timing.png


Note
RF not would trigger the camera. We added a ground strap to the double shielded BNC cable and covered some unshielded cables with tin foil. This stopped the RF from triggering the camera.

tune 3 MeV electrons to the 90 degree line

tune to 0 degree line

Determine the magnet settings needed to optimize the current to FC1.

Take a picture of the beam spot on the YaG and FC1


Energy Switch Out (High En Range)
Solenoid 1 7.8 A
Solenoid 2 3.9 A
Gun Hor 0.1 A
Gun Ver 0 A
Output Hor 0.3 A
Output Ver 0.3 A
Rep Rate 6
Gun HV 10 (Knob Setting)
Gun Grid Voltage 10(Knob Setting)
RF frequency 2856.268 MHz
Modulator HV Power Supply 3.66 (Knob Setting)
RF macro Pulse Length (FWHM) 200 ns
Q1 (A) 0
Q2 (A) 0
Q3 (A) 0
Q4 (A) 0
Q5 (A) 0
Q6 (A) 0

Hrrl pos 12jul2012 3MeV FC0 1.png Hrrl pos 12jul2012 3MeV FC0 2.png Hrrl pos 12jul2012 3MeV FC0 3.png Hrrl pos 12jul2012 3MeV FC0 4.png Hrrl pos 12jul2012 3MeV FC0 5.png Hrrl pos 12jul2012 3MeV FC0 6.png

Hrrl pos 12jul2012 3MeV YAG 1.png Hrrl pos 12jul2012 3MeV YAG 2.png Hrrl pos 12jul2012 3MeV YAG 3.png Hrrl pos 12jul2012 3MeV YAG 4.png Hrrl pos 12jul2012 3MeV YAG 5.png 100 px

tune to 45 degree line

Optimize the current to FC2 using Quad 7 and the energy slits 

Q7 did not help to increase beam current at FC45

document the magnet element settings and current to FC2.

Transmission from zero Line to 45 degree line is about 4%.

Increased Reprate to 17 Hz and Minor tune change

When reprate was at 6 Hz, the current was too low. So, the reprate was increased. to 17 Hz.


Energy Switch Out (High En Range)
Solenoid 1 6.1 A
Solenoid 2 2.7 A
Gun Hor 0.1 A
Gun Ver 0 A
Output Hor 0.4 A
Output Ver 0.4 A
Rep Rate 17
Gun HV 10 (Knob Setting)
Gun Grid Voltage 10(Knob Setting)
RF frequency 2856.817 MHz
Modulator HV Power Supply 3.66 (Knob Setting)
RF macro Pulse Length (FWHM) 200 ns
Q1 (A) 0
Q2 (A) 0
Q3 (A) 0
Q4 (A) 0
Q5 (A) 0
Q6 (A) 0

tune to 90 degree

Optimize current to FC3 using last 3 quads


Take scope picture

trasmission

Make several measurements using all three FCs to determine the transmission.

Do this by transporting beam to each several times.

OTR and YAG comparison

Beam Tuned to 10 MeV


Energy Switch In (Low En Range)
Solenoid 1 5 A
Solenoid 2 5.7 A
Gun Hor - 0.1 A
Gun Ver 0 A
Output Hor 0 A
Output Ver 0 A
Rep Rate 29
Gun HV 10 (Knob Setting)
Gun Grid Voltage 10 (Knob Setting)
RF frequency 2856.297 MHz
Modulator HV Power Supply 4.13 (Knob Setting)
RF macro Pulse Length (FWHM) 200 ns
Q1 (A) 1
Q2 (A) 1
Q3 (A) 2
Q4 (A) 0
Q5 (A) 0
Q6 (A) 0

We were not be able to see the beam spot. So, we tuned energy up to see the beam. 

 I think the reason is becase the pulse length is short. It is 200 ns.


11~15 Mev

We were not be able to see the beam spot. So, we tuned energy up to see the beam. RF power nub was at 4.32, we are not about the energy.


Energy Switch In (Low En Range)
Solenoid 1 8.8 A
Solenoid 2 5.7 A
Gun Hor 0 A
Gun Ver 0 A
Output Hor 0 A
Output Ver 0.4 A
Rep Rate 20
Gun HV 10 (Knob Setting)
Gun Grid Voltage 10(Knob Setting)
RF frequency 2856.297 MHz
Modulator HV Power Supply 4.32 (Knob Setting)
RF macro Pulse Length (FWHM) 200 ns
Q1 (A) -0.9
Q2 (A) 0
Q3 (A) -0.1
Q4 (A) +0.9
Q5 (A) 0
Q6 (A) -0.5
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