The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
TY - CONF AU - Inacker, P. AU - Bellavia, S. AU - Curcio, A.J. AU - Fedotov, A.V. AU - Fischer, W. AU - Gassner, D.M. AU - Jamilkowski, J.P. AU - Kankiya, P.K. AU - Kayran, D. AU - Lehn, D. AU - Meier, R. AU - Miller, T.A. AU - Minty, M.G. AU - Nayak, S.K. AU - Nguyen, L.K. AU - Smart, L. AU - Spataro, C.J. AU - Sukhanov, A. AU - Tuozzolo, J.E. AU - Zhao, Z. ED - Yamazaki, Yoshishige ED - Raubenheimer, Tor ED - McCausey, Amy ED - Schaa, Volker RW TI - Design of the 2-Stage Laser Transport for the Low Energy RHIC Electron Cooling (LEReC) DC Photogun J2 - Proc. of NAPAC2019, Lansing, MI, USA, 01-06 September 2019 CY - Lansing, MI, USA T2 - North American Particle Accelerator Conference T3 - 4 LA - english AB - The electron beam for the recently constructed Low Energy RHIC electron Cooler (LEReC) at Brookhaven National Laboratory is generated by a high-power fiber laser illuminating a photocathode. The pointing stability of the low-energy electron beam, which is crucial to maintain within acceptable limits given the long beam transport, is highly dependent on the center-of-mass (CoM) stability of the laser spot on the photocathode. For reasons of accessibility during operations, the laser itself is located outside the accelerator tunnel, leading to the need to propagate the laser beam 34 m via three laser tables to the photocathode. The challenges to achieving the required CoM stability of 10 microns on the photocathode thus requires mitigation of vibrations along the transport and of weather- and season-related environmental effects, while preserving accessibility and diagnostic capabilities with proactive design. After successful commissioning of the full transport in 2018/19, we report on our solutions to these design challenges. PB - JACoW Publishing CP - Geneva, Switzerland SP - 144 EP - 146 KW - laser KW - gun KW - electron KW - cathode KW - alignment DA - 2019/10 PY - 2019 SN - 2673-7000 SN - 978-3-95450-223-3 DO - doi:10.18429/JACoW-NAPAC2019-MOPLM18 UR - http://jacow.org/napac2019/papers/moplm18.pdf ER -