Performance of the Daresbury synchrotron radiation source soft x-ray double-crystal monochromator

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

DOI:https://doi.org/10.1063/1.1143059· OSTI ID:5411874

Roper, M D; Buksh, P A; Kirkman, I W; van der Laan, G; Padmore, H A; Smith, A D ^[1]

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1. SERC Daresbury Laboratory, Warrington WA4 4AD (United Kingdom)

The double-crystal monochromator on beam line 3.4 at the Daresbury synchrotron radiation source covers the energy region 0.8--4 keV, routinely using crystal pairs of beryl, quartz, InSb, Ge, and Si. The beam line has a unique system to cut off high-energy radiation. The whole beam line has been built on a swinging arm, which allows the glancing angle on a chromium coated premirror to be varied between 0.5{degree} and 3{degree}. This not only reduces the heat load on fragile crystals, but also reduces the higher order contributions. We have made a thorough study of the alignment problems arising in the double-crystal geometry. Crystal misalignment, Bragg angular offset, as well as heat-load effects, can cause severe beam movements. A beam-position monitor, which has recently been commissioned, is an invaluable diagnostic tool for these beam movements.

• OSTI ID: 5411874
• 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

43 PARTICLE ACCELERATORS
430303* -- Particle Accelerators-- Experimental Facilities & Equipment
DESIGN
ELECTROMAGNETIC RADIATION
ENERGY RANGE
EQUIPMENT
EV RANGE
EV RANGE 100-1000
IONIZING RADIATIONS
KEV RANGE
KEV RANGE 01-10
MONOCHROMATORS
PERFORMANCE
RADIATION SOURCES
RADIATIONS
SOFT X RADIATION
SYNCHROTRON RADIATION SOURCES
X RADIATION
X-RAY EQUIPMENT
X-RAY SOURCES