Author: Brumund, P.
Paper Title Page
WEPPP004 High Heat Load Transfocator for the New ID14 ESRF Beamline 158
 
  • L. Eybert, P. Brumund, J. Reyes-Herrera
    ESRF, Grenoble, France
 
  X ray re­frac­tive lenses (CRL) are pow­er­ful in-line op­tics for fo­cus­ing x-rays. They offer many ad­van­tages such as com­pact­ness, a com­fort­able work­ing dis­tance, ro­bust­ness, and are suit­able for use in a wide range of en­ergy. In the scope of the new nu­clear res­o­nance ID14 beam­line at ESRF, a new trans­fo­ca­tor was de­vel­oped. This trans­fo­ca­tor ben­e­fits from the pre­vi­ous ex­pe­ri­ence of ESRF’s trans­fo­ca­tors to with­stand the high power den­si­ties (645W/mm2) and total power (405W) gen­er­ated by the fu­ture CP­MU18 and the high po­si­tion­ing tol­er­ance re­quired = <± 20µm within the same LCR as­sem­bly and be­tween dif­fer­ent as­sem­blies. A ther­mal load analy­sis was car­ried out to op­ti­mize the cool­ing de­sign for both 1D and 2D Beryl­lium lenses unit as­sem­bly. The tight align­ment spec­i­fi­ca­tions was achieved thanks a good ma­chin­ing of both lenses unit me­chan­i­cal as­sem­bly and ref­er­ence V shaped rail. High po­si­tion­ing re­peata­bil­ity of CRLs ac­tu­a­tor is as­sured by an op­ti­mized flexor and a good align­ment pro­ce­dure. The trans­fo­ca­tor ves­sel is in­stalled on a gran­ite and a 4-DOF align­ment table.  
DOI • reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-WEPPP004  
About • Received ※ 27 October 2023 — Revised ※ 06 November 2023 — Accepted ※ 10 November 2023 — Issued ※ 18 January 2024
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