Experimental characterization of ALS undulator radiation

Journal Article · Tue Jan 31 23:00:00 EST 1995 · Review of Scientific Instruments; (United States)

DOI:https://doi.org/10.1063/1.1145814· OSTI ID:6598916

Heimann, P; Mossessian, D; Warwick, A; Wang, C; Marks, S; Padmore, H; Kincaid, B ^[1]; Gullikson, E M ^[2]

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1. Advanced Light Source, Accelerator and Fusion Research Division, Lawrence Berkeley Laboratory, Berkeley, California 94720 (United States)
2. Center for X-Ray Optics, Materials Sciences Division, Lawrence Berkeley Laboratory, Berkeley, California 94720 (United States)

The radiation from the 5 cm period undulator at the Advanced Light Source (ALS) has been characterized using a transmission grating spectrometer. Spectral and angular distributions of radiation were measured for deflection parameter [ital K] values between 0.45 and 2.12 at low storage ring current (0.1--0.5 mA). From the calibration of the spectrometer, the absolute flux density of the undulator harmonics has been determined together with the spectral linewidth. The electron-beam emittance was determined by analyzing the angular distribution of the redshifted fundamental. Comparison has been made with radiation calculations based upon the measured magnetic-field data of the undulator. Including field errors, electron-beam emittance, and energy spread, good agreement is found between theoretically and experimentally determined harmonic widths and peak brightness.

• DOE Contract Number: AC03-76SF00098
• OSTI ID: 6598916
• Journal Information: Review of Scientific Instruments; (United States), Journal Name: Review of Scientific Instruments; (United States) Vol. 66:2; ISSN 0034-6748; ISSN RSINAK
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
430303* -- Particle Accelerators-- Experimental Facilities & Equipment
ADVANCED LIGHT SOURCE
ANGULAR DISTRIBUTION
BEAM EMITTANCE
BEAMS
BREMSSTRAHLUNG
DISTRIBUTION
ELECTROMAGNETIC RADIATION
ELECTRON BEAMS
ENERGY SPECTRA
HARMONICS
LEPTON BEAMS
LINE WIDTHS
MAGNETIC FIELDS
ONDULATOR RADIATION
OSCILLATIONS
PARTICLE BEAMS
RADIATION SOURCES
RADIATIONS
SPECTRA
SYNCHROTRON RADIATION SOURCES