Difference between revisions of "HRRL 03-15-2011"

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=Scan Results=
 
=Scan Results=
 +
 +
(Normalized Emittance)=(Relativistic Factor) *(beta) * (Geometrical Emittance)
 +
 +
<math>\epsilon_{nor} = \gamma_{rel} \beta \epsilon_{geo}  </math>
 +
 +
<math>\beta=v/c  </math> is almost one for 10 MeV
 +
 
==Scan_Quad1 ==
 
==Scan_Quad1 ==
 
===163mA===
 
===163mA===
Line 119: Line 126:
  
  
 +
==Scan_Quad4 ==
 +
 +
===176 mA===
 +
 +
[[File:HRRL_05-15-3011-Scan_Q4_176mA_Par_Fit_x.png | 300px]]
 +
 +
x-projection:
 +
 +
emit=0.110 +- 0.001 mm*mrad, emit_norm=2.158 +- 0.014 mm*mrad
 +
 +
beta=0.439 +- 0.001, alpha=0.985 +-0.004
 +
 +
[[File:HRRL_05-15-3011-Scan_Q4_176mA_Par_Fit_y.png | 300px]]
 +
 +
y-projection:
 +
 +
emit=0.161 +- 0.001 mm*mrad, emit_norm=3.150 +- 0.012 mm*mrad
 +
 +
beta=0.734 +- 0.001, alpha=-0.607 +-0.002
 +
 +
===88 mA===
 +
 +
[[File:HRRL_05-15-3011-Scan_Q4_88mA_Par_Fit_x.png | 300px]]
 +
 +
 +
 +
[[File:HRRL_05-15-3011-Scan_Q4_88mA_Par_Fit_y.png | 300px]]
 +
 +
 +
 +
===44mA===
 +
 +
[[File:HRRL_05-15-3011-Scan_Q4_44mA_Par_Fit_x.png | 300px]]
 +
 +
 +
 +
[[File:HRRL_05-15-3011-Scan_Q4_44mA_Par_Fit_y.png | 300px]]
 +
 +
y-projection:
 +
 +
emit=0.920 +- 0.023 mm*mrad, emit_norm=17.998 +- 0.442 mm*mrad
 +
 +
beta=0.630 +- 0.010, alpha=-1.956 +-0.031
 +
 +
===22 mA===
 +
 +
[[File:HRRL_05-15-3011-Scan_Q4_22mA_Par_Fit_x.png | 300px]]
 +
 +
 +
 +
[[File:HRRL_05-15-3011-Scan_Q4_22mA_Par_Fit_y.png | 300px]]
 +
 +
===11 mA===
 +
 +
[[File:HRRL_05-15-3011-Scan_Q4_11mA_Par_Fit_x.png | 300px]]
 +
 +
 +
 +
[[File:HRRL_05-15-3011-Scan_Q4_11mA_Par_Fit_y.png | 300px]]
 +
 +
y-projection:
 +
 +
emit=0.085 +- 0.005 mm*mrad, emit_norm=1.656 +- 0.098 mm*mrad
 +
 +
beta=0.321 +- 0.006, alpha=-1.349 +-0.029
  
 
=Summary=
 
=Summary=
 +
 +
(Normalized Emittance)=(Relativistic Factor) *(beta) * (Geometrical Emittance)
 +
 +
<math>\epsilon_{x}^{\mbox{Norm}} = \gamma_{rel} \beta \epsilon_{x}^{\mbox{geom}}  </math>
 +
 +
<math>\beta=v/c  </math> is almost one for 10 MeV
 +
  
 
{| border="3"  cellpadding="20" cellspacing="0"
 
{| border="3"  cellpadding="20" cellspacing="0"
 
|Peak Beam current||<math> \epsilon_{nx}</math> || <math>\epsilon_{ny}</math>
 
|Peak Beam current||<math> \epsilon_{nx}</math> || <math>\epsilon_{ny}</math>
 
|-
 
|-
−
|(mA)|| (mm*mrad) || (mm*mrad)
+
|(mA)|| (mm*mrad) || mm*mrad
 
|-
 
|-
 
| 0.102 ||29  || 72
 
| 0.102 ||29  || 72
Line 137: Line 216:
 
| 163 ||4.6  || 5.8
 
| 163 ||4.6  || 5.8
 
|}
 
|}
−
 
−
If there is a space charge effect, shouldn't emittance increase with beam current?
 
−
A:Yes, it should. (Sadiq)
 
−
 
  
 
[[HRRL_Emittance_Measurements_March14-18-2011]]
 
[[HRRL_Emittance_Measurements_March14-18-2011]]

Latest revision as of 04:40, 18 March 2011

Quad scan

1.) deliver 165 mA peak current to FC with all Quads off Ouput corrector off (H2=0,V2=0) 2.) Use Q1-Q3 to make smallest spot on the OTR

3.) Use Output corrector to center beam spot onto OTR. Record transmission.

Quad scan using Q4

Do quick quad scan with analog camera


Install digital and shielding

Quad current STOR image
200 px

Scan Results

(Normalized Emittance)=(Relativistic Factor) *(beta) * (Geometrical Emittance)

[math]\epsilon_{nor} = \gamma_{rel} \beta \epsilon_{geo} [/math]

[math]\beta=v/c [/math] is almost one for 10 MeV

Scan_Quad1

163mA

HRRL 05-15-3011-Scan Q1 163mA Par Fit x.png HRRL 05-15-3011-Scan Q1 163mA Par Fit x Quad Current.png


x-projection:

emit=0.236 +- 0.001 mm*mrad, emit_norm=4.622 +- 0.018 mm*mrad

beta=0.574 +- 0.001, alpha=0.895 +-0.002

HRRL 05-15-3011-Scan Q1 163mA Par Fit y.png HRRL 05-15-3011-Scan Q1 163mA Par Fit y Quad Current.png


y-projection:

emit=0.299 +- 0.003 mm*mrad, emit_norm=5.846 +- 0.054 mm*mrad

beta=0.315 +- 0.001, alpha=-0.742 +-0.004

80mA

HRRL 05-15-3011-Scan Q1 80mA Par Fit x.png HRRL 05-15-3011-Scan Q1 80mA Par Fit x Quad Current.png


x-projection:

emit=0.110 +- 0.001 mm*mrad, emit_norm=2.151 +- 0.014 mm*mrad

beta=0.378 +- 0.001, alpha=0.957 +-0.003


HRRL 05-15-3011-Scan Q1 80mA Par Fit y.png HRRL 05-15-3011-Scan Q1 80mA Par Fit y Quad Current.png


y-projection:

emit=0.281 +- 0.002 mm*mrad, emit_norm=5.491 +- 0.030 mm*mrad

beta=0.546 +- 0.001, alpha=-0.873 +-0.003


40mA

HRRL 05-15-3011-Scan Q1 40mA Par Fit x.png HRRL 05-15-3011-Scan Q1 40mA Par Fit x Quad Current.png


x-projection:

emit=0.267 +- 0.002 mm*mrad, emit_norm=5.224 +- 0.033 mm*mrad

beta=0.449 +- 0.001, alpha=1.142 +-0.004



HRRL 05-15-3011-Scan Q1 40mA Par Fit y.png HRRL 05-15-3011-Scan Q1 40mA Par Fit y Quad Current.png


y-projection:

emit=0.731 +- 0.004 mm*mrad, emit_norm=14.303 +- 0.076 mm*mrad

beta=0.382 +- 0.001, alpha=-0.613 +-0.002


20mA

HRRL 05-15-3011-Scan Q1 20mA Par Fit x.png HRRL 05-15-3011-Scan Q1 20mA Par Fit x Quad Current.png


x-projection:

emit=0.245 +- 0.002 mm*mrad, emit_norm=4.804 +- 0.031 mm*mrad

beta=0.463 +- 0.001, alpha=1.139 +-0.004


HRRL 05-15-3011-Scan Q1 20mA Par Fit y.png HRRL 05-15-3011-Scan Q1 20mA Par Fit y Quad Current.png


y-projection:

emit=0.699 +- 0.003 mm*mrad, emit_norm=13.673 +- 0.063 mm*mrad

beta=0.459 +- 0.001, alpha=-0.601 +-0.002



Scan_Quad4

176 mA

HRRL 05-15-3011-Scan Q4 176mA Par Fit x.png

x-projection:

emit=0.110 +- 0.001 mm*mrad, emit_norm=2.158 +- 0.014 mm*mrad

beta=0.439 +- 0.001, alpha=0.985 +-0.004

HRRL 05-15-3011-Scan Q4 176mA Par Fit y.png

y-projection:

emit=0.161 +- 0.001 mm*mrad, emit_norm=3.150 +- 0.012 mm*mrad

beta=0.734 +- 0.001, alpha=-0.607 +-0.002

88 mA

HRRL 05-15-3011-Scan Q4 88mA Par Fit x.png


HRRL 05-15-3011-Scan Q4 88mA Par Fit y.png


44mA

HRRL 05-15-3011-Scan Q4 44mA Par Fit x.png


HRRL 05-15-3011-Scan Q4 44mA Par Fit y.png

y-projection:

emit=0.920 +- 0.023 mm*mrad, emit_norm=17.998 +- 0.442 mm*mrad

beta=0.630 +- 0.010, alpha=-1.956 +-0.031

22 mA

HRRL 05-15-3011-Scan Q4 22mA Par Fit x.png


HRRL 05-15-3011-Scan Q4 22mA Par Fit y.png

11 mA

HRRL 05-15-3011-Scan Q4 11mA Par Fit x.png


HRRL 05-15-3011-Scan Q4 11mA Par Fit y.png

y-projection:

emit=0.085 +- 0.005 mm*mrad, emit_norm=1.656 +- 0.098 mm*mrad

beta=0.321 +- 0.006, alpha=-1.349 +-0.029

Summary

(Normalized Emittance)=(Relativistic Factor) *(beta) * (Geometrical Emittance)

[math]\epsilon_{x}^{\mbox{Norm}} = \gamma_{rel} \beta \epsilon_{x}^{\mbox{geom}} [/math]

[math]\beta=v/c [/math] is almost one for 10 MeV


Peak Beam current [math] \epsilon_{nx}[/math] [math]\epsilon_{ny}[/math]
(mA) (mm*mrad) mm*mrad
0.102 29 72
20 4.8 13.7
40 5.2 14.3
80 2.2 5.5
163 4.6 5.8

HRRL_Emittance_Measurements_March14-18-2011

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