Open AccessA new high‐speed beam chopper for time‐resolved X‐ray studies
Author(s) -
McPherson Armon,
Wang Jin,
Lee Peter L.,
Mills Dennis M.
Publication year - 2000
Publication title -
journal of synchrotron radiation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.172
H-Index - 99
ISSN - 1600-5775
DOI - 10.1107/s0909049599014582
Subject(s) - chopper , beam (structure) , optics , physics , materials science , quantum mechanics , voltage
A new high‐speed X‐ray beam chopper, which can be phase locked to the temporal structure of the Advanced Photon Source (APS) storage ring, has been developed and tested. The open window time of the chopper is 2450 ns, which corresponds to ∼67% of the revolution time of the APS storage ring. By phase locking the rotation of the beam chopper to the storage‐ring orbital frequency, any portion of the storage‐ring fill pattern can be positioned within the beam‐chopper transmission‐time window.