Development of the Proton Beam Monitoring System at the 45-MeV Proton Irradiation Test Facility

2008 ◽  
Vol 52 (9(3)) ◽  
pp. 783-788
Author(s):  
Sang-Pil Yun ◽  
In-Seok Hong ◽  
Yong-Sub Cho
2017 ◽  
Vol 52 (2) ◽  
pp. 110-120 ◽  
Author(s):  
M. A. Aginian ◽  
S. G. Arutunian ◽  
D. Cho ◽  
M. Chung ◽  
G. S. Harutyunyan ◽  
...  

2017 ◽  
Vol 52 (3) ◽  
pp. 303-303
Author(s):  
M. A. Aginian ◽  
S. G. Arutunian ◽  
D. Choe ◽  
M. Chung ◽  
G. S. Harutyunyan ◽  
...  

2015 ◽  
Vol 42 (6Part15) ◽  
pp. 3390-3390
Author(s):  
I Yeo ◽  
A Ghebremedhin ◽  
B Patyal

2021 ◽  
Vol 5 (2) ◽  
pp. 15
Author(s):  
Mitsuru Imaizumi ◽  
Takeshi Ohshima ◽  
Yosuke Yuri ◽  
Kohtaku Suzuki ◽  
Yoshifumi Ito

We investigated the effects of irradiation beam conditions on the performance degradation of silicon and triple-junction solar cells for use in space. The fluence rates of electron and proton beams were varied. Degradation did not depend on the fluence rate of protons for both cells. A higher fluence rate of electrons caused greater degradation of the Si cell, but the dependence was due to the temperature increase during irradiation. Two beam-area expansion methods, defocusing and scanning, were examined for proton irradiation of various energies (50 keV–10 MeV). In comparing the output degradation from irradiation with defocused and scanned proton beams, no significant difference in degradation was found for any proton energy. We plan to reflect these findings into ISO standard of irradiation test method of space solar cells.


2021 ◽  
Author(s):  
Julie Lascaud ◽  
Rafal Kowalewski ◽  
Benjamin Wollant ◽  
Henri Carmigniani ◽  
Katrin Schnurle ◽  
...  

2019 ◽  
Vol 5 (2) ◽  
pp. 025015 ◽  
Author(s):  
Jean-Yves Duboz ◽  
Julie Zucchi ◽  
Eric Frayssinet ◽  
Patrick Chalbet ◽  
Sébastien Chenot ◽  
...  

Volume 4 ◽  
2004 ◽  
Author(s):  
Zukun Chen ◽  
Nathan K. Bultman

This paper is an analytical investigation of a proposed vacuum barrier window that isolates the proton beam transport vacuum envelope from the Ultra Cold Neutron (UCN) experimental target system at atmospheric pressure. The window is subjected to static pressure and cyclic thermal stresses as the accelerated particle beam passes through it and deposits a small amount of energy in the window. The analysis investigates various beam rms sizes for two beam delivery time structures. The 0.1-mm thick, 52 mm diameter window is made of inconel alloy 718 and is welded to the beamline tube at its outer edge. For some combinations of delivery time structure and beam size, the window under differential pressure and proton beam heating experiences stress that is well above yield and possibly large enough to break the inconel foil. In order to analyze the induced temperature and stress, a finite element model has been developed. The model has been written parametrically to allow the beam characteristics, window material properties, dimensions and mesh densities to be easily adjusted. The heat load is applied to the model through the use of a 3-dimentional table containing the calculated volumetric heat rates. The heat load is based on a radial distribution for a circular Gaussian beam under both normal and extensional operation cases. In this analysis, a radial-centered, circular beam is assumed. The results of several analyses are presented in this paper.


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