An ultra-high-vacuum multiple grating chamber and scan drive with improved grating change

Conference · Sun Jan 01 00:00:00 EST 1989

OSTI ID:5549204

Hulbert, S L; Holly, D J; Middleton, F H; Wallace, D J ^[1]

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1. Brookhaven National Lab., Upton, NY (USA)

We describe a new grating chamber and scan drive which has been designed, built, and tested by Physical Sciences Laboratory of the University of Wisconsin for the new high flux, high-resolution spectroscopy branch line of the TOK hybrid wiggler/undulator on the NSLS VUV ring. The chamber will contain spherical gratings to be used in the Spherical Grating Monochromator (SGM) configuration introduced by Chen and Sette. The grating chamber houses five 180 mm {times} 35 mm {times} 30 mm gratings capable of scanning a range of 12{degree} ({minus}14{degree} to +8{degree} with respect to the incoming beam direction) for VUV and soft X-ray diffraction. The gratings can be switched and precisely indexed while under ultra-high vacuum (UHV) at any scan angle and are mechanically isolated from the vacuum chamber to prevent inaccuracies due to chamber distortions. The gratings can separately be adjusted for height, yaw, pitch, and roll, with the latter three performed while in vacuo. The scan drive provides a resolution of 0.03 arc sec with linearity over the 12{degree} range of {approx}1.5 arc sec and absolute reproducibility of 1 arc sec. 5 refs., 5 figs.

• Research Organization: Brookhaven National Lab., Upton, NY (USA)
• Sponsoring Organization: DOE/ER
• DOE Contract Number: AC02-76CH00016
• OSTI ID: 5549204
• Report Number(s): BNL-43337; CONF-890802-10; ON: DE90001554; TRN: 89-027818
• Resource Relation: Conference: 7. synchrotron radiation instrumentation (SRI) national conference, Berkeley, CA (USA), 6-10 Aug 1989
• Country of Publication: United States
• Language: English

Related Subjects

47 OTHER INSTRUMENTATION
43 PARTICLE ACCELERATORS
DIFFRACTION GRATINGS
DESIGN
ENGINEERING
BEAM OPTICS
MECHANICAL PROPERTIES
MONOCHROMATORS
NSLS
SOFT X RADIATION
SPHERICAL CONFIGURATION
ACCELERATORS
CONFIGURATION
CYCLIC ACCELERATORS
ELECTROMAGNETIC RADIATION
GRATINGS
IONIZING RADIATIONS
RADIATION SOURCES
RADIATIONS
SYNCHROTRON RADIATION SOURCES
SYNCHROTRONS
X RADIATION
440300* - Miscellaneous Instruments- (-1989)
430200 - Particle Accelerators- Beam Dynamics
Field Calculations
& Ion Optics