Development of a high‐temperature superconducting magnet for use in a cryogen‐free electron beam ion trap

2019 ◽  
Vol 49 (2) ◽  
pp. 308-312
Author(s):  
Toshihiro Tamai ◽  
Hiroyuki A. Sakaue ◽  
Yoshiro Terazaki ◽  
Nagato Yanagi ◽  
Nobuyuki Nakamura
Keyword(s):  
Electron Beam ◽  
High Temperature ◽  
Free Electron ◽  
Ion Trap ◽  
Superconducting Magnet ◽  
High Temperature Superconducting ◽  
Electron Beam Ion Trap

scholarly journals Spectra of Ga-Like to Cu-Like Praseodymium and Neodymium Ions Observed in the Large Helical Device

Atoms ◽  
2021 ◽  
Vol 9 (3) ◽  
pp. 46
Author(s):  
Chihiro Suzuki ◽  
Fumihiro Koike ◽  
Izumi Murakami ◽  
Tetsutarou Oishi ◽  
Naoki Tamura
Keyword(s):  
Electron Beam ◽  
High Temperature ◽  
Ion Trap ◽  
Extreme Ultraviolet ◽  
Spectral Feature ◽  
Spectral Lines ◽  
Electron Beam Ion Trap ◽  
Magnetically Confined ◽  
First Time ◽  
Charged Ions

Extreme ultraviolet (EUV) spectra of highly charged praseodymium (Pr) and neodymium (Nd) ions have been investigated in optically thin high-temperature plasmas produced in the Large Helical Device (LHD), a magnetically confined torus device for fusion research. Discrete spectral lines emitted mainly from highly charged ions having 4s or 4p outermost electrons were observed in plasmas with electron temperatures of 0.8–1.8 keV. Most of the isolated lines of Ga-like to Cu-like Nd ions were identified by a comparison with the recent data recorded in an electron beam ion trap (EBIT). The isolated lines of Pr ions corresponding to the identified lines of Nd ions were easily assigned from a similarity of the spectral feature for these two elements. As a result, some of the lines of Pr ions have been newly identified experimentally for the first time in this study.

scholarly journals X-ray laser spectroscopy with an electron beam ion trap at the free electron laser LCLS

2012 ◽  
Vol 388 (3) ◽  
pp. 032037 ◽  
Author(s):  
S Bernitt ◽  
G V Brown ◽  
J R Crespo López-Urrutia ◽  
J Rudolph ◽  
R Steinbrügge ◽  
...  
Keyword(s):  
Electron Beam ◽  
Laser Spectroscopy ◽  
Free Electron ◽  
Free Electron Laser ◽  
Ion Trap ◽  
X Ray ◽  
Electron Beam Ion Trap

scholarly journals Development of a Cryogen-Free Compact 3 T Superconducting Magnet for an Electromagnetic Property Measurement System

2021 ◽  
Vol 11 (7) ◽  
pp. 3074
Author(s):  
Jae Young Jang ◽  
Myung Su Kim ◽  
Young Jin Hwang ◽  
Seunghyun Song ◽  
Yojong Choi ◽  
...  
Keyword(s):  
High Temperature ◽  
Measurement System ◽  
Electromagnetic Property ◽  
Superconducting Magnet ◽  
Optimized Design ◽  
Magnet System ◽  
Superconducting Tape ◽  
High Temperature Superconducting ◽  
Target Field ◽  
Property Measurement

A cryogen-free portable 3 T high-temperature superconducting magnet for an electromagnetic property measurement system has been developed to serve as a user facility at the Korea Basic Science Institute. The metallic insulation method was adopted to reduce the charging delay without sacrificing the self-protecting feature. A genetic-algorithm-aided optimized design was carried out to minimize the superconducting tape consumption while satisfying several design constraints. After the design, the compact high-temperature superconducting magnet composed of eight double-pancake coil modules was wound with high-temperature superconducting tape and stainless steel tape, and integrated with a two-stage cryo-cooler. The 3 T magnet was successfully cooled to approximately 20 K with a cryo-cooler and reached the target field of 3 T without any problems. Long-term measurements and a range of other tests were also implemented to verity the performance of the magnet. Test results demonstrated the feasibility of a cryogen-free portable high-temperature superconducting magnet system for electromagnetic property measurement experiments.

Forbidden Transitions in the Visible Spectra of an Electron Beam Ion Trap (EBIT)

1998 ◽  
Vol 58 (6) ◽  
pp. 599-604 ◽  
Author(s):  
E Träbert ◽  
P Beiersdorfer ◽  
S B Utter ◽  
J R Crespo López-Urrutia
Keyword(s):  
Electron Beam ◽  
Ion Trap ◽  
Electron Beam Ion Trap ◽  
Visible Spectra ◽  
Forbidden Transitions

Soft-X-ray spectra of highly charged Au ions in an electron-beam ion trap

2001 ◽  
Vol 79 (2-3) ◽  
pp. 153-162 ◽  
Author(s):  
E Träbert ◽  
P Beiersdorfer ◽  
K B Fournier ◽  
S B Utter ◽  
K L Wong
Keyword(s):  
Electron Beam ◽  
Beam Energy ◽  
Large Scale ◽  
Ion Trap ◽  
Electron Beam Energy ◽  
X Ray ◽  
Maximum Charge ◽  
Electron Beam Ion Trap ◽  
Atomic Structure Calculations ◽  
Structure Calculations

Systematic variation of the electron-beam energy in an electron-beam ion trap has been employed to produce soft-X-ray spectra (20 to 60 Å) of Au with well-defined maximum charge states ranging from Br- to Co-like ions. Guided by large-scale relativistic atomic structure calculations, the strongest Δn = 0 (n = 4 to n' = 4) transitions in Rb- to Cu-like ions (Au42+ – Au50+) have been identified. PACS Nos.: 32.30Rj, 39.30+w, 31.50+w, 32.20R

Measurements of Temperature Dynamics of Ions Trapped Inside an Electron Beam Ion Trap and Evidence for Ionisation Heating

2001 ◽  
Vol T92 (1) ◽  
pp. 147-149 ◽  
Author(s):  
F. J. Currell ◽  
F. J. Currell ◽  
H. Kuramoto ◽  
S. Ohtani ◽  
C. Scullion ◽  
...  
Keyword(s):  
Electron Beam ◽  
Ion Trap ◽  
Electron Beam Ion Trap ◽  
Temperature Dynamics
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