title: Design of a subnanometer resolution beam position monitor for dielectric laser accelerators.
abstract: We present a new concept for a beam position monitor with the unique ability to map particle beam position to a measurable wavelength. Coupled with an optical spectrograph, this beam position monitor is capable of subnanometer resolution. We describe one possible design, and through finite-element frequency-domain simulations, we show a resolution of 0.7 nm. Because of its high precision and ultracompact form factor, this device is ideal for future x-ray sources and laser-driven particle accelerators "on a chip."
authors.affiliation: Department of Applied Physics, Stanford University, Stanford, California 94305, USA. KenSoong@SLAC.Stanford.edu
authors.forename: Ken
authors.initials: K
authors.lastname: Soong
authors.forename: Robert L
authors.initials: RL
authors.lastname: Byer