Title :
Beam breakup in a microtron
Author :
Yunn, Byung C. ; Merminga, Lia
Author_Institution :
Thomas Jefferson Nat. Accel. Facility, Newport News, VA, USA
Abstract :
In a microtron, the path length change from pass to pass is a fixed multiple of the RF wavelength, and the accelerating system can be reasonably well approximated as a single cavity. Under such circumstances it is possible to derive an analytical formula for the multipass beam breakup threshold current. The threshold current determined by numerical simulations agrees very well with the formula for a machine with a small number of passes. The analytic formula can serve as a useful guide in examining optics designs to improve the BBU threshold
Keywords :
accelerator cavities; microtrons; numerical analysis; particle optics; BBU threshold; accelerating system; analytical formula; beam breakup; microtron; multipass beam breakup threshold; numerical simulations; optics designs; path length change; single cavity; threshold current; Acceleration; Computer simulation; Eigenvalues and eigenfunctions; Equations; Impedance; Linear accelerators; Numerical simulation; Q factor; Radio frequency; Threshold current;
Conference_Titel :
Particle Accelerator Conference, 1997. Proceedings of the 1997
Conference_Location :
Vancouver, BC
Print_ISBN :
0-7803-4376-X
DOI :
10.1109/PAC.1997.750804
