Kenneth P. Gall,Gerrit Townsend Zwart,Jan Van der Laan,Charles D. O'Neal, III,Ken Yoshiki Franzen,Charles D. ONeal, III
申请号：
US14039752
公开号：
US20140094641A1
申请日:
2013.09.27
申请国别(地区):
US
年份:
2014
代理人:
摘要：
An example particle accelerator includes the following: a resonant cavity in which particles are accelerated, where the resonant cavity has a background magnetic field having a first shape； and an extraction channel for receiving particles output from the resonant cavity. The extraction channel comprises a series of focusing regions to focus a beam of received particles. At least one of the focusing regions is a focusing element configured to alter a shape of the background magnetic field to a second shape that is substantially opposite to the first shape in the presence of a magnetic field gradient resulting from reduction of the background magnetic field from the resonant cavity to the extraction channel.
