UHV compatible compact double-crystal monochromator at BEPC diffraction and scattering beamline 4B9A

Journal Article · Sat Jul 01 00:00:00 EDT 1989 · Rev. Sci. Instrum.; (United States)

DOI:https://doi.org/10.1063/1.1140875· OSTI ID:5831858

Shu, D; Wang, M; Liu, W; Xie, Q; Wang, W; Cong, Z; Zhang, Y; Liu, J; He, W

A UHV compatible compact double-crystal monochromator was designed and constructed for BEPC diffraction and the scattering beamline 4B9A. It is a compact device with a 325 /times/250/times/250 mm/sup 3/ vacuum chamber. A T-structure mechanism has been designed for allowing the monochromator to have a Bragg angle range from 5/degree/ to 70/degree/ and keep the exit beam position and direction fixed during wavelength tuning. The first crystal is cooled by a heat-pipe cooling system and a pair of PZT drivers provide a two-dimensional adjustment to optimize the alignment between two crystals. The design and operating principles are described in this paper.

• Research Organization: Institute of High Energy Physics, Academia Sinica, P.O. Box 918, Beijing, China (CN)
• OSTI ID: 5831858
• Journal Information: Rev. Sci. Instrum.; (United States), Vol. 60:7
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
MONOCHROMATORS
FABRICATION
SYNCHROTRON RADIATION
FOCUSING
X-RAY EQUIPMENT
BEAM BENDING MAGNETS
BRAGG REFLECTION
COOLING
CRYSTALS
DESIGN
HEAT PIPES
OPERATION
OPTIMIZATION
RESOLUTION
ULTRAHIGH VACUUM
BREMSSTRAHLUNG
ELECTRICAL EQUIPMENT
ELECTROMAGNETIC RADIATION
ELECTROMAGNETS
EQUIPMENT
MAGNETS
RADIATIONS
REFLECTION
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