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Title: An elliptical wiggler beamline for the ALS

A beamline for circularly polarized radiation produced by an elliptical wiggler has been designed at the ALS covering the broad energy range from 50 eV to 2000 eV. The rigorous theory of grating diffraction efficiency has been used to maximize transmitted flux. The nature of the elliptical wiggler insertion device creates a challenging optical problem due to the large source size in the vertical and horizontal directions. The requirement of high resolving power, combined with the broad tuning range and high heat loads complicate the design. These problems have been solved by using a variable included angle monochromator of the ``constant length`` type with high demagnification onto its entrance slit, and cooled optics.
Authors:
 [1] ; ;  [2]
  1. Lawrence Berkeley Lab., CA (United States)|[Inst. of Microelectronics Technology, Chernogolovka (Russia)
  2. Lawrence Berkeley Lab., CA (United States)
Publication Date:
OSTI Identifier:
197802
Report Number(s):
LBL-37815; LSBL-289; CONF-9510119-7
ON: DE96004325; TRN: 96:008277
DOE Contract Number:
AC03-76SF00098
Resource Type:
Conference
Resource Relation:
Conference: SRI `95: synchrotron radiation instrumentation symposium and the 7. users meeting for the advanced photon source (APS), Argonne, IL (United States), 16-20 Oct 1995; Other Information: PBD: Oct 1995
Research Org:
Lawrence Berkeley Lab., CA (United States)
Sponsoring Org:
USDOE, Washington, DC (United States)
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; WIGGLER MAGNETS; DESIGN; ADVANCED LIGHT SOURCE; BEAM OPTICS; CIRCULAR CONFIGURATION; POLARIZATION; MONOCHROMATORS