Comparison of elliptical and spherical mirrors for the grasshopper monochromators at SSRL

Journal Article · Sat Jul 01 00:00:00 EDT 1989 · Rev. Sci. Instrum.; (United States)

DOI:https://doi.org/10.1063/1.1140838· OSTI ID:5908720

Waldhauer, A P

A comparison of the performance of a spherical and elliptical mirror in the grasshopper monochromator is presented. The problem was studied by ray tracing and then tested using visible (/lambda/=633 nm) laser light. Calculations using ideal optics yield an improvement in flux by a factor of up to 2.7, while tests with visible light show an increase by a factor of 5 because the old spherical mirror is compared to a new, perfect elliptical one. The FWHM of the measured focus is 90 /mu/m with a spherical mirror, and 25 /mu/m with an elliptical one. Elliptical mirrors have been acquired and are now being installed in the two grasshoppers at SSRL.

• Research Organization: Stanford Synchrotron Radiation Laboratory, P.O. Box 4349, Bin 99, Stanford, California 94309 (US)
• DOE Contract Number: AC03-82ER13000
• OSTI ID: 5908720
• Journal Information: Rev. Sci. Instrum.; (United States), Vol. 60:7
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
MONOCHROMATORS
COMPARATIVE EVALUATIONS
MIRRORS
PERFORMANCE
SYNCHROTRONS
EFFICIENCY
ELLIPTICAL CONFIGURATION
LASER RADIATION
PHOTOEMISSION
SPHERICAL CONFIGURATION
VISIBLE RADIATION
ACCELERATORS
CONFIGURATION
CYCLIC ACCELERATORS
ELECTROMAGNETIC RADIATION
EMISSION
RADIATIONS
SECONDARY EMISSION
430302* - Particle Accelerators- Injection & Extraction Systems