Open AccessPerformance of the VUV beamline 4.1 at the SRS, Daresbury Laboratory
Author(s) -
Dhanak V. R.,
Shard A. G.,
Muryn C. A.,
Wincott P. L.,
Thornton G.
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/s090904959701296x
Subject(s) - monochromator , beamline , optics , photodiode , grating , physics , beam (structure) , wavelength
The performance of a recently commissioned beamline, designated BL4.1, at the SRS, Daresbury Laboratory, is described. This beamline covers the energy range 15 ≥ h υ≥ 200 eV, using a spherical grating monochromator, and is equipped with a UHV surface‐science endstation containing a Scienta SES200 and an HA54 angle‐resolving electron‐energy analyser. Design parameters and optical specifications are tabulated. Monochromator resolution has been determined by measuring the Fermi edge of a Pt foil cooled to 40 K and these values are compared with the calculated resolution. The flux delivered to the endstation has been measured directly using a calibrated photodiode. The performance of the beamline is further illustrated by reference to a study of the angular distribution of photoemitted intensity from a band‐gap state on a TiO 2 (110) 1 × 2 surface.