<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><div class="">Dear All,</div><div class=""><br class=""></div>we would like to announce a document summarizing a study how measurements at the EIC will be influenced by various accelerator and beam effects, i.e. the crossing angle, <div class="">the crabbing rotation, the beam energy spread, the angular beam divergence, and the bunch length. <br class="">The accelerator and beam effects studied in the note need to be included in physics and detector simulations for the EIC. They can have profound consequences of the measurement capabilities of the EIC and the design and layout of the detectors. Of particular interest are, e.g., analysis of azimuthal modulations in the cross section that reveal insights on GPDs or TMDs and the possible fake asymmetries being caused by the accelerator and beam effects.<br class=""><br class="">We provide code how to integrate these effect on generator level or as after burner, as well as a movie illustrating the electron and proton bunch movement during their interaction. <div class="">The visualization is for an electron-proton collision at 18x275 GeV and based on the transport model described in the note.<div class=""><br class=""></div><div class="">You can find the note and movie at <a href="https://urldefense.proofpoint.com/v2/url?u=https-3A__eic.github.io_resources_simulations.html&d=DwMFaQ&c=CJqEzB1piLOyyvZjb8YUQw&r=aRyZltrEySmLlrFU4Ems83mNJ2sRhhXIX_v6ViWLNFQ&m=dAvbBg_XEZtapCinHrfIVsQ46F1LIwxW-KYqIV8okVo&s=R7fGizGJ0VE7NVZQKZiGG4ivYSD-VjIIiPrHzw4ap84&e=" class="">https://eic.github.io/resources/simulations.html</a> and <a href="https://urldefense.proofpoint.com/v2/url?u=http-3A__www.eicug.org_web_documents_public&d=DwMFaQ&c=CJqEzB1piLOyyvZjb8YUQw&r=aRyZltrEySmLlrFU4Ems83mNJ2sRhhXIX_v6ViWLNFQ&m=dAvbBg_XEZtapCinHrfIVsQ46F1LIwxW-KYqIV8okVo&s=NA9qBbVlhGgebe9DabHJfPfsYDGcqiAWRjFmKk3eFp0&e=" class="">http://www.eicug.org/web/documents/public</a> under technical notes.</div><div class=""><br class="">Regards,<br class="">Alex, Brian, Elke, Jarda, Jin, Markus and Yulia</div><div class=""><br class=""></div><div class=""><br class=""><br class=""><div class="">Note: Please do not feel obligated to respond to this message outside of your work hours.<br class=""><br class=""> <font face="Menlo" style="font-size: 12px;" class="">( `,_' )+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-<br class=""> ) `\ +<br class=""> / '. | Elke-Caroline Aschenauer (she/her/hers) =<br class=""> | `, -<br class=""> \,_ `-/ Brookhaven National Lab +<br class=""> ,&&&&&V Physics Dept., 25 Corona Road =<br class=""> ,&&&&&&&&: Bldg. 510 /2-195 Rocky Point, NY, -<br class="">,&&&&&&&&&&; 20 Pennsylvania Avenue 11778 +<br class="">| |&&&&&&&;\ Upton, NY 11973 =<br class="">| | :_) _ Tel.: 001-631-344-4769 Tel.: +1-631-569-4290 -<br class="">| | ;--' | Cell-USA: +1-757-2565224 +<br class="">'--' `-.--. | Cell-Europe: +49152220025211 =<br class=""> \_ | |—‘ -<br class=""> `-._\__/ Mail: <a href="mailto:elke@bnl.gov" class="">elke@bnl.gov</a> elke.caroline@me.com +<br class=""> +=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=<br class=""></font><br class=""><br class=""><br class=""><br class=""><br class=""><br class=""><br class=""><br class=""></div>
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