Development of 394.6 GHz CW Gyrotron (Gyrotron FU CW II) for DNP/Proton-NMR at 600 MHz

Material type: 文書・図像類

Author: IDEHARA, Tほか

Publisher: Springer

Publication date: 2007-06

Material Format: Digital

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Note (General)：: Gyrotron FU CW II with an 8 T liquid He free superconducting magnet, the second gyrotron of the THz Gyrotron FU CW Series, has been constructed and th...

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Material Type: 文書・図像類
Title: Development of 394.6 GHz CW Gyrotron (Gyrotron FU CW II) for DNP/Proton-NMR at 600 MHz
Author/Editor: IDEHARA, T
OGAWA, I
La, Agusu
KANAMAKI, T
MITSUDO, S
SAITO, T
FUJIWARA, T
TAKAHASHI, H
Author Heading: IDEHARA, T
OGAWA, I
La, Agusu
KANAMAKI, T
MITSUDO, S
SAITO, T
FUJIWARA, T
TAKAHASHI, H
Publication, Distribution, etc.: Springer
Publication Date: 2007-06
Publication Date (W3CDTF): 2007-06
Periodical title: International Journal of Infrared and Millimeter Waves
No. or year of volume/issue: 28 6
Volume: 28
Issue: 6
Pages: 433-442
Text Language Code: eng
Subject Heading: Gyrotron
THz
DNP
NMR
CW operation
Second harmonic
Target Audience: 一般
Note (General): Gyrotron FU CW II with an 8 T liquid He free superconducting magnet, the second gyrotron of the THz Gyrotron FU CW Series, has been constructed and the operation test was successfully carried out. It will be used for enhancing the sensitivity of 600 MHz proton-NMR by use of Dynamic Nuclear Polarization (DNP). The designed operation mode of the gyrotron is TE2,6 at the second harmonic. The corresponding frequency is 394.6 GHz. The real operation frequency is 394.3 GHz at TE06 mode, because of fabrication error of the diameter of the cavity. The operation is in complete CW at the output power of around 30 W or higher at the TE06 cavity mode. There are many other operation modes at the fundamental and the second harmonic. Typical output power of the fundamental and the second harmonic are higher than 100 W and 20 W, respectively. The highest frequency observed up to the present is 443.5 GHz at the second harmonic operation of TE6,5 mode. The measured results are compared with the theoretical consideration.
Source: https://u-fukui.repo.nii.ac.jp/?action=repository_action_common_download&item_id=23971&item_no=1&attribute_id=22&file_no=1
https://u-fukui.repo.nii.ac.jp/?action=repository_action_common_download&item_id=23971&item_no=1&attribute_id=22&file_no=1
Access Restrictions: 限定公開
Related Material (DOI): 10.1007/s10762-007-9224-x
Data Provider (Database): 国立情報学研究所 : 学術機関リポジトリデータベース（IRDB）（機関リポジトリ）
https://irdb.nii.ac.jp
Original Data Provider (Database): 福井大学 : 福井大学学術機関リポジトリ