Recycler short kicker beam impedance

Crisp, Jim ; Fellenz, Brian

Fermi National Accelerator Laboratory

关键词: Kicker Magnets;    43 Particle Accelerators;    Rotation Accelerators;    Meters;    Accelerators;   

DOI  :  10.2172/963777
RP-ID  :  FERMILAB-TM-2437-AD
RP-ID  :  AC02-07CH11359
RP-ID  :  963777

美国|英语

来源: UNT Digital Library

【 摘 要 】

Measured longitudinal and calculated transverse beam impedance is presented for the short kicker magnets being installed in the Fermilab Recycler. Fermi drawing number ME-457159. The longitudinal impedance was measured with a stretched wire and the Panofsky equation was used to estimate the transverse impedance. The impedance of 3319 meters (the Recycler circumference) of stainless vacuum pipe is provided for comparison. Although measurements where done to 3GHz, impedance was negligible above 30MHz. The beam power lost to the kicker impedance is shown for a range of bunch lengths. The measurements are for one kicker assuming a rotation frequency of 90KHz. Seven of these kickers are being installed.