TY  - JOUR
AU  - Sergeev, Ilya
AU  - Doehrmann, Ralph
AU  - Horbach, Jan
AU  - Heuer, Joachim
TI  - Angular vibrations of cryogenically cooled double-crystal monochromators
JO  - Journal of synchrotron radiation
VL  - 23
SN  - 0909-0495
CY  - Chester
PB  - IUCr
M1  - PUBDB-2016-05538
SP  - 1097 - 1103
PY  - 2016
N1  - (c) International Union of Crystallography. Post referee full text in progress.
AB  - The effect of angular vibrations of the crystals in cryogenically cooled monochromators on the beam performance has been studied theoretically and experimentally. A simple relation between amplitude of the vibrations and size of the focused beam is developed. It is shown that the double-crystal monochromator vibrations affect not only the image size but also the image position along the optical axis. Several methods to measure vibrations with theX-ray beam are explained and analyzed. The methods have been applied to systematically study angular crystal vibrations at monochromators installed at the PETRA III light source. Characteristic values of the amplitudes of angular vibrations for different monochromators are presented.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000382299500007
C6  - pmid:27577762
DO  - DOI:10.1107/S1600577516011188
UR  - https://bib-pubdb1.desy.de/record/314993
ER  -