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TY - CONF AU - Usabiaga, P. AU - Ariz, I. AU - Arredondo, I. AU - Etxebarria, V. AU - Feuchtwanger, J. AU - Portilla, J. AU - Seara Eizaguirre, J.M. AU - Vivas, J. ED - Maimone, Fabio ED - Schaa, Volker RW ED - Mueller, Raphael TI - Characterization of an proton ECR ion source for low beam current J2 - Proc. of ECRIS2024, Darmstadt, Germany, 15-19 September 2024 CY - Darmstadt, Germany T2 - International Workshop on Electron Cyclotron Resonance Ion Sources T3 - 26 LA - english AB - In this paper we analyze the behavior of a low beam current proton ECR ion source for linac. During the operation of the source, as a function of the operating parameters we have observed a complex behavior. The state of the plasma is highly dependent on the input parameters, and in some cases even bi-stable conditions can be achieved showing abrupt changes in the state. To try to understand this behavior we carried out a series of experiments varying the input parameters both sequentially and randomly to avoid following the same path every time. Thanks to these experiments we have been able to observe the change in the luminosity of the plasma, which is an indirect measure of the degree of ionization in the plasma, along with the changes in reflected and transmitted RF power delivered to the source. We also characterized the relation between the outside temperature of the ion source chamber walls and the plasma. In addition to this we have analyzed the resulting extracted ion beam using a pepperpot and a faraday cup. We have observed that our beam doesn’t have one dominant species and has three species that are found in comparable quantities. PB - JACoW Publishing CP - Geneva, Switzerland SP - 112 EP - 115 KW - ion-source KW - plasma KW - experiment KW - luminosity KW - ECR DA - 2024/09 PY - 2024 SN - 2222-5692 SN - 978-3-95450-257-8 DO - doi:10.18429/JACoW-ECRIS2024-TUP09 UR - https://jacow.org/ecris2024/papers/tup09.pdf ER -