JACoW is a publisher in Geneva, Switzerland that publishes the proceedings of accelerator conferences held around the world by an international collaboration of editors.
TY - CONF AU - Da Palma Serafim, C.F. AU - Bellodi, G. AU - Calatroni, S. AU - Djurabekova, F. AU - Grudiev, A. AU - Lombardi, A.M. AU - Peacock, R.C. AU - Perez Fontenla, A.T. AU - Ramberger, S. AU - Sargsyan, E. AU - Sgobba, S. AU - Wuensch, W. ED - McIntosh, Peter ED - Burt, Graeme ED - Apsimon, Robert ED - Schaa, Volker R.W. TI - Microscopy Investigation on Different Materials After Pulsed High Field Conditioning and Low Energy H-Irradiation J2 - Proc. of LINAC2022, Liverpool, UK, 28 August-02 September 2022 CY - Liverpool, UK T2 - International Linear Accelerator Conference T3 - 31 LA - english AB - During operation the LINAC4 RFQ (Radio-Frequency-Quadrupole) is exposed to high electric fields which can lead to vacuum breakdown. It is also subject to beam loss that can cause surface modification, including blistering, which can result in reduced electric field handling and an increased breakdown rate. An experimental study has been made to identify materials with high electric field capability and robustness to low-energy irradiation. In this paper we briefly discuss the selection criteria and we analyze these materials investigating their metallurgical properties using advanced microscopic techniques such as Scanning Electron Microscope, Electron Back Scattered Diffraction, Energy-dispersive X-ray Spectroscopy and conventional optical microscopy. These allow to observe and characterize the different materials on aμand a nano-scale, allowing us to compare results before and after irradiation and breakdown testing. PB - JACoW Publishing CP - Geneva, Switzerland SP - 422 EP - 425 KW - radiation KW - electron KW - experiment KW - detector KW - cathode DA - 2022/09 PY - 2022 SN - 2226-0366 SN - 978-3-95450-215-8 DO - doi:10.18429/JACoW-LINAC2022-TUPOPA06 UR - https://jacow.org/linac2022/papers/tupopa06.pdf ER -