Diagnostic beamline for a third generation storage ring

Journal Article · Wed Jan 01 00:00:00 EST 1992 · Review of Scientific Instruments; (United States)

DOI:https://doi.org/10.1063/1.1142700· OSTI ID:5647205

Perera, R C.C.; Melczer, M E; Warwick, A; Jackson, A; Kincaid, B M ^[1]

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1. Advanced Light Source, Lawrence Berkeley Laboratory, Berkeley, California 94720 (United States)

A knowledge of the position, size, and stability of the source and the angle of emission of synchrotron radiation (SR) from the storage ring are essential for optimizing the operation of storage ring, insertion devices and monochromators. Berkeley's Advanced Light Source (ALS) has a natural emittance of 3.4{times}10{sup {minus}9} mrad, and has beam sizes {sigma}{sub {ital h}} and {sigma}{sub {ital v}} (assuming a 10% emittance ratio into the vertical direction) in bending magnet 1 (BM1) of 44 and 83 {mu}m, respectively. Simple diffractive optical calculations show that imaging this beam using visible light optics is not feasible and imaging must be performed using photon energies greater than 50 eV. This will be the same for all third generation low emittance storage rings. The synchrotron radiation diagnostics at ALS will consist of an imaging system for 200 eV photons and a white beam'' port with a streak camera to obtain the timing information. The imaging system will employ two crossed spherical mirrors in a Kirkpatrick--Baez configuration, to eliminate astigmatism. Use of 1:1 imaging will eliminate coma, resulting in an image of the source which is only limited by the residual aberrations of the optics. Real time imaging of the beam is deemed feasible by the use of a high resolution charged coupled device (CCD), and the associated electronics necessary to read the CCD. The design of the imaging system of the diagnostic beamline for ALS and the detection system will be discussed with a view toward applications in other third generation SR sources.

• DOE Contract Number: AC03-76SF00098
• OSTI ID: 5647205
• Journal Information: Review of Scientific Instruments; (United States), Vol. 63:1; ISSN 0034-6748
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
STORAGE RINGS
BEAM EXTRACTION
MONOCHROMATORS
SYNCHROTRON RADIATION SOURCES
BEAM BENDING MAGNETS
BEAM EMITTANCE
CHARGE-COUPLED DEVICES
EV RANGE 100-1000
OPTICAL SYSTEMS
STREAK CAMERAS
CAMERAS
ELECTRICAL EQUIPMENT
ELECTROMAGNETS
ENERGY RANGE
EQUIPMENT
EV RANGE
MAGNETS
MEASURING INSTRUMENTS
RADIATION DETECTORS
RADIATION SOURCES
SEMICONDUCTOR DEVICES
430303* - Particle Accelerators- Experimental Facilities & Equipment