HRRL 03-15-2011

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

[math]\epsilon_{nor} = \epsilon_{geo} \times \gamma\lt math\gt ==Scan_Quad1 == ===163mA=== [[File:HRRL_05-15-3011-Scan_Q1_163mA_Par_Fit_x.png | 300px]] [[File:HRRL_05-15-3011-Scan_Q1_163mA_Par_Fit_x_Quad_Current.png | 300px]] 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 [[File:HRRL_05-15-3011-Scan_Q1_163mA_Par_Fit_y.png | 300px]] [[File:HRRL_05-15-3011-Scan_Q1_163mA_Par_Fit_y_Quad_Current.png | 300px]] 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=== [[File:HRRL_05-15-3011-Scan_Q1_80mA_Par_Fit_x.png | 300px]] [[File:HRRL_05-15-3011-Scan_Q1_80mA_Par_Fit_x_Quad_Current.png | 300px]] 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 [[File:HRRL_05-15-3011-Scan_Q1_80mA_Par_Fit_y.png | 300px]] [[File:HRRL_05-15-3011-Scan_Q1_80mA_Par_Fit_y_Quad_Current.png | 300px]] 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=== [[File:HRRL_05-15-3011-Scan_Q1_40mA_Par_Fit_x.png | 300px]] [[File:HRRL_05-15-3011-Scan_Q1_40mA_Par_Fit_x_Quad_Current.png | 300px]] 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 [[File:HRRL_05-15-3011-Scan_Q1_40mA_Par_Fit_y.png | 300px]] [[File:HRRL_05-15-3011-Scan_Q1_40mA_Par_Fit_y_Quad_Current.png | 300px]] 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=== [[File:HRRL_05-15-3011-Scan_Q1_20mA_Par_Fit_x.png | 300px]] [[File:HRRL_05-15-3011-Scan_Q1_20mA_Par_Fit_x_Quad_Current.png | 300px]] 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 [[File:HRRL_05-15-3011-Scan_Q1_20mA_Par_Fit_y.png | 300px]] [[File:HRRL_05-15-3011-Scan_Q1_20mA_Par_Fit_y_Quad_Current.png | 300px]] 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 =Summary= {| border="3" cellpadding="20" cellspacing="0" |Peak Beam current||\lt math\gt \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