TY - CONF AU - Dehn, Monika AU - Aulenbacher, Kurt AU - Plattner, Paul A3 - Zimmermann, Frank A3 - Tanaka, Hitoshi A3 - Sudmuang, Porntip A3 - Klysubun, Prapong A3 - Sunwong, Prapaiwan A3 - Chanwattana, Thakonwat A3 - Petit-Jean-Genaz, Christine A3 - Schaa, Volker R. W. TI - MIST - The MESA-Injector Source Two CY - Geneva, Switzerland PB - JACoW Publishing M1 - GSI-2025-00493 SP - 2624-2626 PY - 2022 N1 - Published by JACoW Publishing under the terms of the Creative Commons Attribution 3.0 International license. AB - The new accelerator MESA (Mainz Energy Recovering Superconducting Accelerator) will provide an average CW electron beam current of up to 10 mA. Operating at 1.3 GHz, this corresponds to a bunch charge of 7.7 pC. The new DC photoemission source MIST is optimized for these requirements. A challenge is heating of the photocathode at high laser power. By a suitable mechanical construction and the use of specific materials, the heat can be dissipated during operation. Options for further improvements are discussed. T2 - 13th International Particle Accelerator Conference CY - 12 Jun 2022 - 17 Jun 2022, Bangkok (Thailand) Y2 - 12 Jun 2022 - 17 Jun 2022 M2 - Bangkok, Thailand KW - Accelerator Physics (Other) KW - MC2: Photon Sources and Electron Accelerators (Other) LB - PUB:(DE-HGF)8 DO - DOI:10.18429/JACOW-IPAC2022-THPOPT024 UR - https://repository.gsi.de/record/357839 ER -