Comparison of Tevatron C0 and F0 Lambertson beam impedance

Fellenz, James L Crisp and Brian

Fermi National Accelerator Laboratory

关键词: 43 Particle Accelerators;    Impedance;    Fermilab Tevatron;    Apertures;   

DOI  :  10.2172/809814
RP-ID  :  FERMILAB-TM-2205
RP-ID  :  AC02-76CH03000
RP-ID  :  809814

美国|英语

来源: UNT Digital Library

【 摘 要 】

Both the longitudinal and transverse beam impedance measurements for the Tevatron C0 and F0 lambertsons are presented. The C0 lambertsons were designed for circulating beam to travel through the 1 inch high by 6 inch wide field region. In the F0 lambertsons, circulating beam passes through the 2.5 inch high by 4 in ch wide field free region. The more recently designed F0 lambertsons have significantly less impedance than the older C0 lambertsons. Transverse impedance scales as one over the diameter of the aperture cubed. The three C0 style lambertsons were recently removed from the Tevatron. Four of the F0 lambertsons remain. Nine of the F0 style lambertsons are in the Main Injector and three more are required for Numi.