Open AccessBeam‐position monitors in the X‐ray undulator beamline at PETRA
Author(s) -
Hahn U.,
Brefeld W.,
Hesse M.,
Schneider J. R.,
SchulteSchrepping H.,
Seebach M.,
Werner M.
Publication year - 1998
Publication title -
journal of synchrotron radiation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.172
H-Index - 99
ISSN - 1600-5775
DOI - 10.1107/s0909049597013940
Subject(s) - beamline , undulator , storage ring , beam (structure) , physics , synchrotron radiation , optics , advanced photon source , synchrotron , particle accelerator , photon
At the 12 GeV storage ring PETRA, the first synchrotron radiation beamline uses a 4 m‐long undulator. The beamline, with a length of 130 m between source and sample, delivers hard X‐ray photons usable up to 300 keV. The photon beam has a total power of 7 kW. Combined with the high brilliance, the powerful beam is very critical for all beamline components. Copper, located at a distance of 26 m, hit by the full undulator beam, melts within 20 ms. Different monitors are described for stable, safe and reliable operation of beam and experiments.