HRRL 03-17-2011: Difference between revisions

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[[File:HRRL 03-17-2011_Results_Q1_42mA_Pos_SupGau_Y.png | 300 px]]
[[File:HRRL 03-17-2011_Results_Q1_42mA_Pos_SupGau_Y.png | 300 px]]


=== 20 mA, Positive Current, X projection ===
=== 20 mA, Positive Current, X projection ===
Line 86: Line 91:
[[File:HRRL 03-17-2011_Results_Q1_20mA_Pos_SupGau_X.png | 300 px]]
[[File:HRRL 03-17-2011_Results_Q1_20mA_Pos_SupGau_X.png | 300 px]]


emit=0.447 +- 0.001 mm*mrad, emit_norm=12.255 +- 0.040 mm*mrad
beta=1.31512 +- 0.00000, alpha=1.0949 +-0.0007




Line 94: Line 96:




emit=0.231 +- 0.001 mm*mrad, emit_norm=6.334 +- 0.020 mm*mrad
beta=0.661930 +- 0.000000, alpha=0.06386 +-0.00034


=== 10 mA, Positive Current, X projection ===
=== 10 mA, Positive Current, X projection ===
Line 102: Line 101:
[[File:HRRL 03-17-2011_Results_Q1_10mA_Pos_SupGau_X.png | 300 px]]
[[File:HRRL 03-17-2011_Results_Q1_10mA_Pos_SupGau_X.png | 300 px]]


emit=0.489 +- 0.002 mm*mrad, emit_norm=13.408 +- 0.043 mm*mrad
beta=1.30289 +- 0.00000, alpha=1.1231 +-0.0007




Line 118: Line 114:


[[File:HRRL 03-17-2011_Results_Q1_5mA_Pos_SupGau_X.png | 300 px]]
[[File:HRRL 03-17-2011_Results_Q1_5mA_Pos_SupGau_X.png | 300 px]]
emit=0.556 +- 0.002 mm*mrad, emit_norm=15.230 +- 0.049 mm*mrad
beta=1.36924 +- 0.00000, alpha=1.1625 +-0.0007




[[File:HRRL 03-17-2011_Results_Q1_5mA_Pos_SupGau_Y.png | 300 px]]
[[File:HRRL 03-17-2011_Results_Q1_5mA_Pos_SupGau_Y.png | 300 px]]
emit=0.537 +- 0.002 mm*mrad, emit_norm=14.705 +- 0.047 mm*mrad
beta=1.859428 +- 0.000000, alpha=0.21834 +-0.00097




Line 144: Line 132:


x-projection:
x-projection:
emit=0.156 +- 0.001 mm*mrad, emit_norm=4.280 +- 0.014 mm*mrad
beta=0.75384 +- 0.00000, alpha=1.1587 +-0.0004




Line 154: Line 138:
y-projection:
y-projection:


emit=0.110 +- 0.000 mm*mrad, emit_norm=3.000 +- 0.010 mm*mrad
beta=0.914334 +- 0.000000, alpha=-0.33329 +-0.00048




[[HRRL_Emittance_Measurements_March14-18-2011]]
[[HRRL_Emittance_Measurements_March14-18-2011]]

Revision as of 04:05, 10 May 2011

Accelerator Tuning

Good Tune Used for good Scan

By Dr. Kim

Solenoid 1 6.8 A
Solenoid 2 10.4 A
Gun Ver -0.2 A
Gun Hor +0.4 A
Output Hor -1.4A
Output Ver -0.5 A
Gun HV +9.75 (Knob Setting)
Gun Grid Voltage 5.25 (Knob Setting)
RF frequency 2855.816 MHz
Modulator HV Power Supply 4.42 (Knob Setting)
RF macro Pulse Length (FWHM) 200 ns
Peak Current on FC 37.2 mAmps
Scope on FC
e- Beam Energy 14 MeV



Calibration

image OTR image cal_h (mm/px) cal_v (mm/px)
0.04308 0.04204
0.04320 0.04228
0.04349 0.04181
0.04323 0.04196
0.04337 0.04212
mean (mm/px) mean (mm/px)
[math]\displaystyle{ 0.04327 \pm 0.00016 }[/math] [math]\displaystyle{ 0.04204 \pm 0.00018 }[/math]


Results

Q1

At lower current background subtraction gets worse, because singal/noise drops.

42 mA, Positive Current, X projection

emit=0.388 +- 0.008 mm*mrad, emit_norm=10.64 +- 0.22 mm*mrad

beta=1.285 +- 0.024, alpha=0.94 +-0.03

42 mA, Negative Current, Y projection

emit=0.266 +- 0.018 mm*mrad, emit_norm=7.30 +- 0.50 mm*mrad

beta=0.918 +- 0.068, alpha=0.19 +-0.06




20 mA, Positive Current, X projection



10 mA, Positive Current, X projection



emit=0.325 +- 0.001 mm*mrad, emit_norm=8.896 +- 0.029 mm*mrad

beta=1.319524 +- 0.000000, alpha=-0.05069 +-0.00069


5 mA, Positive Current, X projection



Q4

42 mA All Other Quads off

Haven't reach minimum.

42 mA Q1_at_-2A, Q2_at_+8A, Q3_at_-6A

x-projection:


y-projection:


HRRL_Emittance_Measurements_March14-18-2011

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