HRRL 03-15-2011: Difference between revisions

From New IAC Wiki
Jump to navigation Jump to search
Setisadi (talk | contribs)
Setisadi (talk | contribs)
Line 20: Line 20:


=Scan Results=
=Scan Results=
<math>\epsilon_{nor} = \epsilon_{geo} \times \gamma<math>
 
<math>\epsilon_{nor} = \epsilon_{geo} \times \gamma</math>


==Scan_Quad1 ==
==Scan_Quad1 ==
Line 117: Line 118:


beta=0.459 +- 0.001, alpha=-0.601 +-0.002
beta=0.459 +- 0.001, alpha=-0.601 +-0.002
=Summary=
{| border="3"  cellpadding="20" cellspacing="0"
|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
|}
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]]

Revision as of 04:19, 16 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
File:Image.png

Scan Results

[math]\displaystyle{ \epsilon_{nor} = \epsilon_{geo} \times \gamma }[/math]

Scan_Quad1

163mA


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


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


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



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


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




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


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



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