Feasibility study of compact high-voltage TEM using a superconducting RF cavity

2017 Fiscal Year Final Research Report

• Project/Area Number: 15H03596
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Quantum beam science
• Research Institution: High Energy Accelerator Research Organization
• Principal Investigator: Furuya Takaaki 大学共同利用機関法人高エネルギー加速器研究機構, 加速器研究施設, 研究員 (70156975)
• Co-Investigator(Kenkyū-buntansha): 山本 将博 大学共同利用機関法人高エネルギー加速器研究機構, 加速器研究施設, 助教 (00377962) ; 金 秀光 大学共同利用機関法人高エネルギー加速器研究機構, 加速器研究施設, 特別助教 (20594055) ; 道園 真一郎 大学共同利用機関法人高エネルギー加速器研究機構, 加速器研究施設, 教授 (80249903) ; 榎本 收志 大学共同利用機関法人高エネルギー加速器研究機構, その他部局等, 特別教授 (90150010) ; 東 直 大学共同利用機関法人高エネルギー加速器研究機構, 加速器研究施設, 博士研究員 (70793959)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: 超高圧電子顕微鏡 / 光陰極電子銃 / 高周波加速 / 超伝導空洞

Outline of Final Research Achievements

As a feasibility study of a compact high-voltage TEM using a superconducting RF cavity, computer simulation was given to a specially designed cavity in which two modes were simultaneously excited, TM010 and TM020. The results showed the suppressed energy dispersion and the optimum parameters of both modes to obtain the best performance. A photo cathode of GaAs was prepared and a beam diagnostic system was also assembled. The test cavities were fabricated and cooled not only to measure the cavity performance but to establish the RF and frequency tuning system to obtain the TM020 frequency of just double of that of TM010. At a same time, the basic design of a cryostat was carried out.

Free Research Field

総合理工