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Prototype photon position monitors for undulator beams at the Advanced Light Source

Journal Article · · Review of Scientific Instruments; (United States)
DOI:https://doi.org/10.1063/1.1142703· OSTI ID:5646908
;  [1];  [2];  [3]
  1. Lawrence Berkeley Laboratory, Berkeley, California 94720 (United States)
  2. Argonne National Laboratory, Argonne, Illinois 60439 (United States)
  3. Brookhaven National Laboratory, Upton, New York 11973 (United States)
Design criteria are described, and test results are presented, for prototype undulator beam position monitors at the Advanced Light Source (ALS). The design is based on monitors presently in use at the National Synchrotron Light Source, Brookhaven National Laboratory, with modifications to account for the widely varying and large {ital K} values of the undulators to be installed at the ALS. In particular, we have modified the design to simplify the thermal engineering and we have explored techniques to suppress the response of the monitors to soft photons, below 100 eV, so that the beam position can be determined by measuring the higher energy photons which are better collimated.
OSTI ID:
5646908
Journal Information:
Review of Scientific Instruments; (United States), Journal Name: Review of Scientific Instruments; (United States) Vol. 63:1; ISSN RSINA; ISSN 0034-6748
Country of Publication:
United States
Language:
English