Diagnostic beam line for a third generation storage ring
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 device and monochromators. Berkeley's Advanced Light Source (ALS) has a natural emittance of 3.4 {times} 10{sup {minus}9} m-rad, and has beam sizes {sigma}{sub h} and {sigma}{sub v} (assuming a 10% emittance ratio into the vertical direction) in bending magnet 1 (BM1) of 44 {mu}m 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 CCD, and the associated electronics necessary to read the CCD. The design of the imaging system of the diagnostic beam line for ALS and the detection system will be discussed with a view toward applications in other third generation SR sources. 6 refs.
- Research Organization:
- Lawrence Berkeley Lab., CA (United States)
- Sponsoring Organization:
- DOE; USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC03-76SF00098
- OSTI ID:
- 6060810
- Report Number(s):
- LBL-30457; ON: DE92003969
- Country of Publication:
- United States
- Language:
- English
Similar Records
Diagnostic beamline for a third generation storage ring
The planned photon diagnostics beamlines at the Advanced Photon Source
Related Subjects
430303 -- Particle Accelerators-- Experimental Facilities & Equipment
430400* -- Particle Accelerators-- Storage Rings
BEAM OPTICS
BEAMS
BREMSSTRAHLUNG
CAMERAS
COMPUTER CODES
ELECTROMAGNETIC RADIATION
ELECTRON BEAMS
FOCUSING
IMAGES
LEPTON BEAMS
MEASURING INSTRUMENTS
MIRRORS
OPTICAL SYSTEMS
OPTICS
PARTICLE BEAMS
RADIATION DETECTORS
RADIATIONS
S CODES
STORAGE RINGS
STREAK CAMERAS
SYNCHROTRON RADIATION