Absolute energy calibration for plane grating monochromators

Authors
Weiss, MR Follath, R Sawhney, KJS Zeschke, T
Citation
Mr. Weiss et al., Absolute energy calibration for plane grating monochromators, NUCL INST A, 467, 2001, pp. 482-484
Citations number
3
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences","Instrumentation & Measurement
Journal title
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
ISSN journal
01689002 → ACNP
Volume
467
Year of publication
2001
Part
1
Pages
482 - 484
Database
ISI
SICI code
0168-9002(20010721)467:<482:AECFPG>2.0.ZU;2-F
Abstract
This report describes a new method for monochromator energy calibration, wh ich is based on the freedom to change the fix focus constant c(ff) in the p lane grating monochromator at BESSY. If the monochromator is not perfectly aligned, spectra taken at different c(ff)-values show energy shifts (of 1-2 %). These can be attributed to offsets in the grating angles. Measuring spe ctra at different c(ff)-values, one can determine these offsets by employin g a fitting procedure. If these offsets are inserted, c(ff) variation measu rements lead to relative energy scale changes of less than a few 10(-4). (C ) 2001 Published by Elsevier Science B.V.