2013/10/30 by Pashupati Dhakal, Dhakal, Pashupati, Gianluigi Ciovati +5
Engineering · Physics and Astronomy · #Accelerator Physics (physics.acc-ph) #FOS: Physical sciences #Gyrotron and Vacuum Electronics Research #Particle accelerators and beam dynamics #Plasma Diagnostics and Applications
paper · pdf · doi:10.48550/arxiv.1310.8159
openalex publication_date 2013/10/30 · openalex created_date 2022/08/28 · openalex updated_date 2026/07/28
Most of the current research in superconducting radio frequency (SRF)\ncavities is focused on ways to reduce the construction and operating cost of\nSRF based accelerators as well as on the development of new or improved cavity\nprocessing techniques. The increase in quality factors is the result of the\nreduction of the surface resistance of the materials. A recent test on a 1.5\nGHz single cell cavity made from ingot niobium of medium purity and heat\ntreated at 1400 C in a ultra-high vacuum induction furnace resulted in a\nresidual resistance of about 1nanoohm and a quality factor at 2.0 K increasing\nwith field up to 5x1010 at a peak magnetic field of 90 mT. In this\ncontribution, we present some results on the investigation of the origin of the\nextended Q0-increase, obtained by multiple HF rinses, oxypolishing and heat\ntreatment of all Nb cavities.\n