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TY - CONF AU - Higashi, N. AU - Enomoto, A. AU - Funahashi, Y. AU - Furuya, T. AU - Jin, X.J. AU - Kamiya, Y. AU - Kuriki, M. AU - Michizono, S. AU - Nishiwaki, M. AU - Sakai, H. AU - Sawabe, M. AU - Ueno, K. AU - Yamamoto, M. AU - Yamashita, S. ED - Henderson, Stuart ED - Akers, Evelyn ED - Satogata, Todd ED - Schaa, Volker R.W. TI - The Development of Cavity Frequency Tracking Type RF Control System for SRF-TEM J2 - Proc. of IPAC2015, Richmond, VA, USA, May 3-8, 2015 C1 - Richmond, VA, USA T2 - International Particle Accelerator Conference T3 - 6 LA - english AB - Superconducting accelerating cavities used in high-energy accelerators can generate high electric fields of several 10 MV/m by supplying radio frequency waves (RF) with frequencies matched with resonant frequencies of the cavities. Generally, frequencies of input RFs are fixed, and resonant frequencies of cavities that are fluctuated by Lorentz force detuning and Microphonics are corrected by feedbacks of cavity frequency tuners and input RF power. Now, we aim to develop the cavity frequency tracking type RF control system where the frequency of input RF is not fixed and consistently modulated to match the varying resonant frequency of the cavity. In KEK (Tsukuba, Japan), we are developing SRF-TEM that is a new type of transmission electron microscope using special-shaped superconducting cavity. By applying our new RF control system to the SRF-TEM, it is expected to obtain stable accelerating fields so that we can acquire good spatial resolution. In this presentation, we will explain the required stabilities of accelerating fields for SRF-TEM and the feasibility of SRF-TEM in the case of applying the cavity frequency tracking type RF control system. PB - JACoW CP - Geneva, Switzerland SP - 2914 EP - 2916 KW - cavity KW - SRF KW - LLRF KW - acceleration KW - electron DA - 2015/06 PY - 2015 SN - 978-3-95450-168-7 DO - 10.18429/JACoW-IPAC2015-WEPMA060 UR - http://jacow.org/ipac2015/papers/wepma060.pdf ER -