Author: Mayes, C.E.
Paper Title Page
SUPAG04
 Lightsource Unified Modeling Environment (LUME), a Start-to-End Simulation Framework for Electrons and Photons  
 
  • C.E. Mayes
    Cornell University (CLASSE), Cornell Laboratory for Accelerator-Based Sciences and Education, Ithaca, New York, USA
  
  Since first light at LCLS, there has been con­tin­u­ous in­ven­tion of new op­er­at­ing modes, in­tro­duc­tion of new op­ti­cal el­e­ments, and apid im­prove­ment in de­tec­tors. While these im­prove­ments have led to new ex­per­i­ments with much greater sci­en­tific im­pacts, their trans­fer to user op­er­a­tions has often taken sev­eral ex­per­i­men­tal runs (many months to years). The in­te­gra­tion of these tech­ni­cal ad­vances into sci­en­tific pro­grams would be greatly ac­cel­er­ated by a mod­el­ing tool that al­lowed for quan­ti­ta­tive as­sess­ment of the im­pact on sci­en­tific pro­grams of fa­cil­ity im­prove­ments. To this end, SLAC is de­vel­op­ing the Light­source Uni­fied Mod­el­ing En­vi­ron­ment (LUME) for uni­fied mod­el­ing of X-ray free elec­tron laser (XFEL) per­for­mance. This mod­el­ing tool will be built in sev­eral stages with an ini­tial focus on quan­ti­ta­tive pre­dic­tion of crit­i­cal pa­ra­me­ters of the X-ray pulses de­liv­ered to ex­per­i­men­tal sta­tions. This ini­tial de­vel­op­ment will be fol­lowed by in­cor­po­ra­tion of X-ray-sam­ple in­ter­ac­tion and de­tec­tor per­for­mance. This pro­ject will take a holis­tic ap­proach start­ing with the sim­u­la­tion of the elec­tron beams, to the pro­duc­tion of the pho­ton pulses and their trans­port through the op­ti­cal com­po­nents of the beam­line, their in­ter­ac­tion with the sam­ples and the sim­u­la­tion of the de­tec­tors, fol­lowed by the analy­sis of sim­u­lated data. LUME will lever­age ex­ist­ing, well-es­tab­lished codes [Astra, Bmad, El­e­gant, Gen­e­sis, Im­pact for elec­trons, Gen­e­sis 1.3 for FEL sim­u­la­tion, and the "Syn­chro­tron Ra­di­a­tion Work­shop" (SRW) for X-ray op­tics] that will be dri­ven and con­fig­ured by a co­her­ent high-level frame­work. The high-level frame­work will build on the Simex plat­form being de­vel­oped by the Eu­ro­pean Clus­ter of Ad­vanced Laser Light Sources (EU­CALL). The plat­form will be built with an open, well-doc­u­mented ar­chi­tec­ture so that sci­ence groups around the world can con­tribute spe­cific ex­per­i­men­tal de­signs and soft­ware mod­ules, ad­vanc­ing both their sci­en­tific in­ter­ests and a broader knowl­edge of the  
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