An X-band Linac for Gamma-Ray Production - SLAC Portal
An X-band Linac for Gamma-Ray Production - SLAC Portal
An X-band Linac for Gamma-Ray Production - SLAC Portal
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400 MW 11.424 GHz RF Power• The requirements on rf phase and amplitude stability are very stringent• 1 o rf phase (243 fs), 0.1%• ScandiNova solid-state modulators• <strong>SLAC</strong> XL-4 klystrons + SLED-II
Precision HV from ScandiNova
XL4 Klystron
5.59 Cell X-Band RF Gun• Modified version of Arnold Vliek’s original 5.49 cell X-<strong>band</strong> gun• Cathode electric field: 200 MV/m• Bunch duration: 10 o 2.5 ps• Injection phase: optimized <strong>for</strong> each geometry; 20 o <strong>for</strong> 5.59-cells• Nominal charge: 250 pC• Emittance: as low as 0.18 mm.mrad @ 250 pC• Emittance compensation magnet: anti-Helmoltz pair, 7 kG
5.59 Cell Modification
Optimized Emittance
5.59 Cell X-Band RF Gun
5.59 Cell X-Band RF Gun
Gun Solenoid Magnets
Solenoid Magnet (<strong>An</strong>ti-Helmotlz)
300 o C Bakeable Gun
Low-Energy Beamline
<strong>Linac</strong> Architecture
250 MeV X-Band <strong>Linac</strong>ChicaneT53 <strong>Linac</strong> SectionsX-Band RF GunInteractionRegion
T-53 Section
T-53 X-<strong>band</strong> Section
Sub-Picosecond Timing
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