公开(公告)号：US09870891B1

公开(公告)日：2018-01-16

申请号：US15433263

申请日：2017-02-15

Applicant: Euclid Techlabs LLC

Inventor： Sergey Antipov ,  Yingje Li ,  Chunuang Jing ,  Roman Kostin ,  Jiaqu Qiu ,  Dan Wang ,  Paul Schoessow

IPC: H01J37/14 ,  H01J37/26 ,  H01J1/50 ,  H01F7/02

CPC classification number: H01J1/50 ,  H01F7/0221 ,  H01F7/0284 ,  H05H7/04 ,  H05H2007/043

Abstract: The present invention provides a technique for constructing compact, high gradient magnetic lenses for charged particle beam focusing. Methods for adjusting the focusing strength of the lenses are provided, based on thermal control, mechanical motion of the magnetic chips within the yoke. The present invention is a method for designing and fabricating permanent magnet focusing elements that are compact, simple to construct, and having a large, adjustable focusing strength. Applications include beamlines for THz radiation sources, free electron lasers, wakefield accelerators and any other charged particle devices that require a compact beamline.