SURF III: the next-generation radiometric storage ring facility at NIST

Thomas R. O'Brian

doi:10.1117/12.257200

8 November 1996 SURF III: the next-generation radiometric storage ring facility at NIST

Thomas R. O'Brian

Proceedings Volume 2831, Ultraviolet Atmospheric and Space Remote Sensing: Methods and Instrumentation; (1996) https://doi.org/10.1117/12.257200
Event: SPIE's 1996 International Symposium on Optical Science, Engineering, and Instrumentation, 1996, Denver, CO, United States

Abstract

The National Institute of Standards and Technology in Gaithersburg, MD is upgrading the Synchrotron Ultraviolet Radiation Facility (SURF II) electron storage ring to serve as an absolute radiometric standard of unprecedented accuracy spanning the soft x-ray through infrared spectral regions. Major upgrades in the storage ring magnet system will substantially improve the uniformity of the magnetic field accelerating the stored electrons, and permit the new facility (SURF III) to operate at higher electron energies, extending the useful spectral range to at least 600 eV (about 2 nm). Parallel improvements in radiometric measurement of stored electron current will reduce the absolute spectral irradiance uncertainty in SURF III to about 0.5% or less from the infrared through far ultraviolet spectral range. A recently completed cryogenic electrical substitution radiometer will be used for high accuracy radiometry (0.1% order absolute uncertainty) exploiting SURF as a bright ultraviolet source. These developments will reduce the uncertainty in SURF-based ultraviolet radiometry by a factor of two to five, depending on wavelength and application. We will review the current states of ultraviolet radiometry at SURF II, discuss the SURF III storage ring upgrade, and outline the new radiometry programs planned for SURF III.

Citation Download Citation

Thomas R. O'Brian "SURF III: the next-generation radiometric storage ring facility at NIST", Proc. SPIE 2831, Ultraviolet Atmospheric and Space Remote Sensing: Methods and Instrumentation, (8 November 1996); https://doi.org/10.1117/12.257200

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available