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Title: Bending Magnet Synchrotron Radiation Imaging with Large Orbital Collection Angles

Journal Article · · Physical Review Letters
ORCiD logo [1];  [2];  [3];  [1];  [3]
  1. Synchrotron SOLEIL (France)
  2. Brookhaven National Laboratory (BNL), Upton, NY (United States)
  3. MAX IV Laboratory (Sweden)
+ Show Author Affiliations

Synchrotron radiation (SR) from bending magnets, wigglers, and undulators is now extensively produced for users at storage ring based light sources, with unique properties in terms of average brightness and stability. Here, we present a profound study of bending magnet SR intensity distribution in the image plane of a focusing optical system. Measurements of this intensity distribution at the MAX-IV low emittance storage ring are compared to theoretical predictions, and found to be in excellent agreement. This work shows upon the possibility of performing high resolution emittance diagnostics with visible or near-visible SR on upcoming low-emittance storage ring based light sources. As a byproduct of our study, we derive a closed analytical expression for the intensity distribution from a zero-emittance beam, in the limiting case of wide orbital collection angles. This expression finally allows us to demonstrate the meeting between classical electrodynamics applied to SR emission and focusing, and the Landau and Lifshitz prediction of radiation intensity distribution nearby a caustic.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0012704
OSTI ID:
2217093
Report Number(s):
BNL-225006-2023-JAAM; TRN: US2407182
Journal Information:
Physical Review Letters, Vol. 131, Issue 18; ISSN 0031-9007
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

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36 MATERIALS SCIENCE
beam diagnostics
classical electromagnetism
electromagnetic field calculations