Silver bonded, internally water-cooled monochromators for CHESS wiggler beamlines

Journal Article · Tue Jul 01 04:00:00 EDT 1997 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.54628· OSTI ID:21179544

Smolenski, Karl W; Qun, Shen; Doing, Park ^[1]

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1. Cornell High Energy Synchrotron Source (CHESS), Cornell University, Ithaca, New York 14853 (United States)

Intense synchrotron radiation from high power wiggler sources has long been a difficult high-heat-load problem to the design of properly cooled x-ray optics. Large, high power and very intense beams thermally distort crystal optics, reducing throughput and broadening rocking curves. An internally cooled silicon monochromator has been fabricated which demonstrated the capability of diffracting wiggler radiation of unprecedented power without significant degradation of the beam. Cooling water flows through rectangular cooling channels 1 mm wide, 1 mm below the diffracting surface, fed by a manifold bonded to the underside of the diffracting crystal. A novel silver diffusion bond was used to ensure leak-tight UHV performance. Recent test results at wiggler station F2 show a linear behavior of the x-ray flux with increasing storage ring current up to a total power of 3 kW and a peak surface power density of 5 W/mm{sup 2}. The improved monochromator has led to an increase of x-ray flux by a factor of six over previous contact-cooled designs and shows that internal water-cooling can be an effective solution to high-heat-load problems at high power wiggler stations.

• OSTI ID: 21179544
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 417; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
BEAM COOLING
BEAM CURRENTS
BEAM OPTICS
CRYSTALS
DESIGN
ELECTRON BEAMS
HEATING LOAD
MONOCHROMATORS
PERFORMANCE
SILICON
SILVER
STORAGE RINGS
SYNCHROTRON RADIATION
WIGGLER MAGNETS
X RADIATION
X-RAY DIFFRACTION