The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
TY - CONF AU - Cahill, A.D. AU - Dolgashev, V.A. AU - Franzi, M.A. AU - Rosenzweig, J.B. AU - Tantawi, S.G. AU - Weathersby, S.P. ED - Schaa, Volker RW ED - Power, Maria ED - Shiltsev, Vladimir ED - White, Marion TI - Quality Factor in High Power Tests of Cryogenic Copper Accelerating Cavities J2 - Proc. of NAPAC2016, Chicago, IL, USA, October 9-14, 2016 C1 - Chicago, IL, USA T2 - North American Particle Accelerator Conference T3 - 3 LA - english AB - Recent SLAC experiments with cryogenically cooled 11.4 GHz standing wave copper accelerating cavities have shown evidence of 250 MV/m accelerating gradients with low breakdown rates. The gradient depends on the circuit parameters of the accelerating cavity, such as the intrinsic and external quality factors (Q0, QE). In our studies we see evidence that Q₀ decreases during rf pulse at 7-70 K. This paper discusses experiments that are directed towards understanding the change of Q0 at high power. PB - JACoW CP - Geneva, Switzerland SP - 987 EP - 990 KW - ion KW - cavity KW - ECR KW - experiment KW - GUI DA - 2017/01 PY - 2017 SN - 978-3-95450-180-9 DO - 10.18429/JACoW-NAPAC2016-WEPOB41 UR - https://jacow.org/napac2016/papers/wepob41.pdf ER -