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 - Contreras-Martinez, C. AU - Giaccone, B. AU - Gonin, I.V. AU - Khabiboulline, T.N. AU - Melnychuk, O.S. AU - Pischalnikov, Y.M. AU - Posen, S. AU - Pronitchev, O.V. AU - Yun, J.C. ED - Saito, Kenji ED - Xu, Ting ED - Sakamoto, Naruhiko ED - Schaa, Volker R.W. ED - Thomas, Paul W. TI - Testing of the 2.6 GHz SRF Cavity Tuner for the Dark Photon Experiment at 2 K J2 - Proc. of SRF2023, Grand Rapids, MI, USA, 25-30 June 2023 CY - Grand Rapids, MI, USA T2 - International Conference on RF Superconductivity T3 - 21 LA - english AB - At FNAL two 2.6 GHz SRF cavities are being used to search for dark photons, the experiment can be conducted at 2 K or in a dilution refrigerator. Precise frequency tuning is required for these two cavities so they can be matched in frequency. A cooling capacity constraint on the dilution refrigerator only allows piezo actuators to be part of the design of the 2.6 GHz cavity tuner. The tuner is equipped with three encapsulated piezo that deliver the long- and short-range frequency tuning. Modifications were implemented on the first tuner design due to the low forces on the piezos due to the cavity. Three brass rods with Belleville washers were added to the design to increase the overall force on the piezos. The results at 2 K of testing this tuner with and without the modification will be presented. PB - JACoW Publishing CP - Geneva, Switzerland SP - 907 EP - 910 KW - cavity KW - photon KW - SRF KW - experiment KW - ECR DA - 2023/09 PY - 2023 SN - 2673-5504 SN - 978-3-95450-234-9 DO - doi:10.18429/JACoW-SRF2023-WEPWB133 UR - https://jacow.org/srf2023/papers/wepwb133.pdf ER -