-----Original Message----From: Tsuyoshi Tajima [mailto:tajima87544@yahoo.com] Sent: Monday, March 03, 2003 3:54 AM To: Robert A. Schill, Jr.; Tsuyoshi Tajima Cc: Mohamed B Trabia Subject: Re: Niobium Cavity Proposal - Final Phase
Bob and Mohamed, The following is the support letter. Since I am on vacation in England, what I can do is limited. Let me know if this is OK with you. Support Letter Superconducting RF cavity technology is becoming very important in the future accelerators such as the one for nuclear waste transmutation. The work being carried out at UNLV is quite unique in the sense that, though it is very important, few attempts have been made worldwide. Especially, optimization of chemical polishing process in terms of uniform flow of chemicals is an area that has been neglected and it is interesting to know the effect. The other interesting research is on the measurement of secondary electron emission coefficient of the real niobium cavity surface, i.e., at cryogenic temperatures. Since this directly affects the results of multipacting calculations, finding the true coefficients as a function of electron energy will be a significant contribution to the development of SCRF cavities in addition to the optimization of cavity shape in terms of multipacting. The other important aspect of the work being done at UNLV is the unique approach by the researchers from different field and with different views, which sometimes lead to very good ideas. Therefore, I strongly support the activities at UNLV and am looking forward to seeing fruitful outcome. Tsuyoshi Tajima Los Alamos National Laboratory