X-ray instrumentation for protein crystallography with SR (abstract)

Journal Article · Wed Jan 01 04:00:00 EST 1992 · Review of Scientific Instruments; (United States)

DOI:https://doi.org/10.1063/1.1143190· OSTI ID:5645488

Popov, A N; Kheiker, D M; Harutunyan, E G ^[1]

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1. Institute of Crystallography of the USSR Academy of Sciences, Leninsky Prospect 59, Moscow, 117333 (USSR)

The station is intended for x-ray analysis of single crystals, primarily that of proteins with the beam of synchrotron radiation from the superconducting wiggler of a special storage ring {ital E}=2.0 GeV, {ital I}=0.3 A in the town of Zelenograd (TNK).{sup 1} The dimensions of the radiation source are 2.35{sup 2} {sigma}{sub {ital x}}{center dot}{sigma}{sub {ital z}}=1.5{times}0.05 mm{sup 2}, the brightness for {lambda}=1.5 A is 10{sup 15} photon/(s mm{sup 2} mrad.{sup 2} 0.1% ({Delta}{lambda}/{lambda})). The station comprises the device forming the monochromatized primary beam ({lambda}=0.5--2.2 A, {Delta}{lambda}/{lambda}{sup {minus}3}{similar to}10{sup {minus}4}) that consists of an asymmetric focusing monochromator with triangular-shaped Si or Ge crystal curved as a round cylinder,{sup 2} a segmented mirror of total external reflection placed behind the monochromator on a rotating bench consisting of 8 flat glass 200{times}50{times}25 mm{sup 2} segments that form a surface imitating an elliptical cylinder, three pairs of horizontal and vertical slits, monitor--ionization chamber, four-circle diffractometer with scintillation counter and horizontal main axis placed on the adjustable carriage that can turn about the monochromator axis; position-sensitive proportional chamber with spherical drift space, 512{times}512 elements of space resolution and time resolution of 10{sup 6} photons per second that can be vertically shifted and bent around the holder horizontal axis. The monochromator goniometer as well as the crystal bend and the mirror segments are driven by the multiple-turn potientiometers by the computer and CAMAC interface.

• OSTI ID: 5645488
• 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

Related Subjects

440101* -- Radiation Instrumentation-- General Detectors or Monitors & Radiometric Instruments
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
BREMSSTRAHLUNG
CRYSTALLOGRAPHY
DESIGN
DIFFRACTOMETERS
ELECTROMAGNETIC RADIATION
MEASURING INSTRUMENTS
ORGANIC COMPOUNDS
PERFORMANCE
POSITION SENSITIVE DETECTORS
PROTEINS
RADIATION DETECTORS
RADIATION SOURCES
RADIATIONS
STORAGE RINGS
SYNCHROTRON RADIATION
SYNCHROTRON RADIATION SOURCES
X-RAY DIFFRACTOMETERS