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Title: Photon beam position monitor

A photon beam position monitor is disclosed for use in the front end of a beamline of a high heat flux and high energy photon source such as a synchrotron radiation storage ring detects and measures the position and, when a pair of such monitors are used in tandem, the slope of a photon beam emanating from an insertion device such as a wiggler or an undulator inserted in the straight sections of the ring. The photon beam position monitor includes a plurality of spaced blades for precisely locating the photon beam, with each blade comprised of chemical vapor deposition (CVD) diamond with an outer metal coating of a photon sensitive metal such as tungsten, molybdenum, etc., which combination emits electrons when a high energy photon beam is incident upon the blade. Two such monitors are contemplated for use in the front end of the beamline, with the two monitors having vertically and horizontally offset detector blades to avoid blade ''shadowing''. Provision is made for aligning the detector blades with the photon beam and limiting detector blade temperature during operation. 18 figs.
Inventors:
;
Issue Date:
OSTI Identifier:
6580022
Assignee:
Univ. of Chicago, IL (United States) PTO; EDB-95-037408
Patent Number(s):
US 5387795; A
Application Number:
PPN: US 8-097276
Contract Number:
W-31109-ENG-38
Resource Relation:
Patent File Date: 26 Jul 1993
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; ACCELERATOR FACILITIES; BEAM MONITORS; DESIGN; PHOTON BEAMS; BEAM POSITION; ALIGNMENT; SYNCHROTRON RADIATION SOURCES; WIGGLER MAGNETS; BEAMS; ELECTRICAL EQUIPMENT; ELECTROMAGNETS; EQUIPMENT; MAGNETS; MEASURING INSTRUMENTS; MONITORS; RADIATION SOURCES 430303* -- Particle Accelerators-- Experimental Facilities & Equipment