EXPERIMENTAL STATION 5-4

CURRENT STATUS: Open
SUPPORTED TECHNIQUES: Very High Energy Resolution; Photoemission
Angle-Resolved Photoelectron Spectroscopy
MAIN SCIENTIFIC DISCIPLINES: Materials
% TIME GENERAL USE: 100%
SCHEDULING: Proposal Submittal and Scheduling Procedures
Current SPEAR and Beam Line Schedules
SOURCE: 10-period undulator, maximum field 0.61 T
BEAM LINE SPECIFICATIONS:
  energy range grating type resolution
DE/E
spot size flux angular
acceptance
focused


7-40 eV


1700 l/mm: 7-18 eV, E/DE > 10000
2800 l/mm: 16-32 eV, E/DE> 10000
3600 l/mm: 20-40 eV, E/DE> 10000
≥1 x 10-4


0.5 x  0.6 mm2


~1011


>1.5 mrad


OPTICS: M0: horizontal deflecting, flat, water-cooled
M1: vertical focusing 10:1, elliptically cylinder
M3: horizontal refocusing 1:1, cylinder
M4: vertical refocusing 1:1, cylinder
MONOCHROMATOR: Normal Incidence Monochromator (NIM)
ABSORPTION: NA
INSTRUMENTATION: SCIENTA R4000 Electron Analyzer
Low-temperature Manipulator
Low Energy Electron Diffraction
DATA ACQUISITION AND ANALYSIS: BL5-4 Precautions, Paramaters, Manipulations and Instruction links
SCIENTA
RESPONSIBLE STAFF: Donghui Lu, 650-926-3026
Hashimoto Makoto, 650-926-5126
BEAM LINE PHONE NUMBER: 650-926-5254
On-site Users: Contact the Duty Operator at 9-926-4040
GENERAL DESCRIPTION: The BL5-4 station is a normal incidence monochromator beam line optimized for high-resolution angle-resolved photoemission spectroscopy (ARPES) in the photon energy range of 10-40 eV. The dedicated experimental end station is equipped with a SCIENTA R4000 electron spectrometer operating in the parallel multi-angle recording mode. In conjunction with the normal incidence monochromator, this system is capable of performing ARPES experiments with a total energy resolution of a few meV and an angular resolution of 0.3°. The experimental end station consists of two chambers: a sample preparation chamber together with LEED and a spectroscopy analysis chamber. Both chambers are kept under UHV throughout the experiments with a base pressure better than 3x10-11 torr. It is also equipped with a low-temperature sample manipulator with two degree of freedom of rotation, which can be cooled down to 10 K.
See video on the role of aluminum foil in vacuum chamber 'bakeouts.'
SCIENTIFIC APPLICATIONS /
SELECTED RESULTS:
ENGINEERING NOTES: March 18, 2010: Taming the Superconductor   
http://www-ssrl.slac.stanford.edu/beamlines/BL5-4/BL5-4_engr_notes.pdf
http://www-ssrl.slac.stanford.edu/safety/beamlines/bl5/

SSRL | Beamlines | User Admin | Safety

Last Updated: 28 JAN 2011
Content Owner: Donghui Lu
Page Editor: Nikola Stojanovic