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Published byJanie Peckham Modified over 2 years ago

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When we simply reduce BC2 energy, Here is a smaller chirper, but with a larger horn (that can be easily reduced with optimization) UNDBEG Energy at BC2= 5GeV; R56@BC2=-24.7mm; final beam energy=3.5GeV Energy at BC2=3. 5GeV; R56@BC2=-27.2mm; final beam energy=3.5GeV E-Jitter 0.076% E-Jitter=0.044%

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Global optimization for SXR L1 Phase -25.72 LX Phase -149 L2 Phase -16 R56 BC2 -56.8 mm LX Voltage 33.8MV R56BC1 -21.6mm L3 Phase -7.8796 BC2 Energy 3GeV Final beam energy 3.5GeV Solution1: E-jitter 0.021%

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optimization with constrains VLX_max=23MV, R56@BC2=50mm solution8 L1 Phase -26.68 LX Phase -159.1 L2 Phase -21.47 R56 BC2 -47.6 mm LX Voltage 23MV R56BC1 -35.1mm L3 Phase -12 E-Jitter=0.026% 40% reductions compared with BC2 energy change only 0.044% Still larger horn compared with nominal ~zero chirper

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Smaller E-jitter with a larger R56 L1 Phase -29.9 LX Phase -162.6 L2 Phase -16 R56 BC2 -71.5 mm LX Voltage 23MV R56BC1 -35.8mm L3 Phase -5 E-Jitter=0.020% Larger R56@BC2

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Energy at BC2 5GeV Ipk=1.7kA L1 Phase -27 LX Phase -160 L2 Phase -22 R56 BC2 -47.1 mm LX Voltage 23MV R56BC1 -36.7mm L3 Phase 0 E-Jitter=0.022% R56@BC2=47.1mm LX Voltage 23MV Final Beam energy=5.5GeV L3 Phase=0

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E@BC2=5GeV, Ebeam 4.0GeV R56BC2_new=50mm L3 phase=-180, Jitter=0.03%

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