IPAC'23 - Student Poster Session Guide

IPAC’23 / STUDENT POSTER SESSION GUIDE 31 Student Poster Session beam quality. The aluminum plasma with a thin Ti or Cu plasma zone can be produced by laser ablation. When changing the focal position of fs laser pulse with respect to the position of the thin-layered zone, the injection timing of electrons depleted from Ti or Cu ions can be adjusted. We present and discuss the simulation results depending on the thickness and the position of the thin layer. SUPM052 Thermionic Sources for electron cooling at IOTA Mary Bossard (University of Chicago) . Brandon Cathey, Giulio Stancari, Sergei Nagaitsev (Fermi National Accelerator Laboratory), John Brandt, Nilanjan Banerjee (Enrico Fermi Institute), Young-Kee Kim (University of Chicago). A new electron cooling experiment is being planned at the Integrable Optics Test Accelerator (IOTA) at Fermilab for cooling ~2.5 MeV protons in the presence of intense space-charge. Elec- tron cooling is integral to the study of beam dynamics and has valuable applications for pro- ducing high-intensity hadron beams in particle accelerators. For such goals, an electron lens to be placed in the IOTA ring will be used for electron cooling, space-charge compensation, and non-linear dynamics. Here we present the simulations and designs of two thermionic electron sources for the cooling at IOTA. One cooler is a basic electron source and will be used for cool- ing the proton beam and as a tool for other experiments at IOTA. The other cooler is a strong electron source, which will be used for studying effects of electron cooling in ion beams with in- tense space-charge. We particularly discuss parameters of the thermionic sources’ electrodes, as well as the simulation results. We also present a new electron source test-stand at the Uni- versity of Chicago, which will be used to test the thermionic electron sources. We also discuss the results from analyzing the test stand operations with a currently existing electron source. Furthermore, we present future steps for production and commissioning of these thermionic sources at IOTA. SUPM053 Electron Polarization Preservation in the EIC Matthew Signorelli (Cornell University (CLASSE)) . Georg Hoffstaetter (Cornell University (CLASSE)), Vadim Ptitsyn (Brookhaven National Laboratory (BNL)). Polarization levels in the Electron Storage Ring (ESR) of the Electron-Ion Collider (EIC) must be maintained for a sufficient time before depolarized bunches are replaced. The depolarizing effects of synchrotron radiation can be minimized with spin matching, however the optics re- quirements for the ring must still be satisfied. Furthermore, the robustness of the polarization in the presence of misalignments, beam-beam effects, and the eventual insertion of a vertical emittance creator – necessary to match the electron and ion beam sizes at the interaction point – must be ensured. In this work, the results of various nonlinear Monte Carlo spin tracking stud- ies of the ESR lattices are presented, and their implications discussed; the necessity for a longi- tudinal spin match in the 18 GeV case is investigated, and vertical emittance creation schemes with minimal effects on polarization are analyzed.