scholarly journals Gamma radiation calculations and gamma blocker design for the high-energy beam transport region of the European Spallation Source

Nukleonika ◽  
2021 ◽  
Vol 66 (3) ◽  
pp. 99-102
Author(s):  
Karol S. Szymczyk ◽  
Sławomir Wronka

Abstract The purpose of this paper is to present the Monte-Carlo calculations performed to design a special element called gamma blocker (GB), necessary to stop the gamma radiation in the Accelerator-to-Target (A2T) section of European Spallation Source (ESS) linac. Very high levels of gamma radiation emitted backward from the activated target through the beam pipe could effectively block any human intervention close to the beam transport system. The residual dose rate in the linac tunnel was calculated without and with different GBs as a function of time. The final GB material and dimensions are proposed.

1983 ◽  
Vol 30 (4) ◽  
pp. 2824-2826 ◽  
Author(s):  
D. Liska ◽  
L. Carlisle ◽  
F. Sigler ◽  
J. McCormick ◽  
D. Greenwood ◽  
...  

1994 ◽  
Vol 65 (5) ◽  
pp. 1774-1777 ◽  
Author(s):  
S. K. Guharay ◽  
C. K. Allen ◽  
M. Reiser ◽  
K. Saadatmand ◽  
C. R. Chang

2014 ◽  
Vol 85 (2) ◽  
pp. 02A723 ◽  
Author(s):  
L. Neri ◽  
L. Celona ◽  
S. Gammino ◽  
D. Mascali ◽  
G. Castro ◽  
...  

2020 ◽  
Vol 61 (1) ◽  
pp. 015001
Author(s):  
B. Brañas ◽  
J. Castellanos ◽  
O. Nomen ◽  
C. Oliver ◽  
F. Aragón ◽  
...  

1989 ◽  
Vol 40 (12) ◽  
pp. 6897-6903 ◽  
Author(s):  
B. S. Newberger ◽  
T. Tajima

1985 ◽  
Vol 32 (5) ◽  
pp. 3327-3329 ◽  
Author(s):  
T. R. Renner ◽  
W. T. Chu ◽  
R. A. Gough ◽  
J. Staples ◽  
J. Tanabe

2007 ◽  
Vol 664 (2) ◽  
pp. L87-L90 ◽  
Author(s):  
J. Albert ◽  
E. Aliu ◽  
H. Anderhub ◽  
P. Antoranz ◽  
A. Armada ◽  
...  

2014 ◽  
Vol 27 ◽  
pp. 1460143
Author(s):  
J. SÁNCHEZ DEL RÍO ◽  
M. J. G. BORGE ◽  
E. NÁCHER ◽  
A. PEREA ◽  
G. RIBEIRO ◽  
...  

A sophisticated design of 750 LaBr3(Ce):LaCl3(Ce) phoswich crystals (CEPA10) with a segmentation determined by the Doppler correction and an energy resolution of 5% at 1 MeV is presented. Monte Carlo simulations have been performed for high energy protons (50–500 MeV) and gamma radiation (0.5–30 MeV) to determine the length and shape of the crystals for optimum performance of the detector. In the case of protons, the two-layer detector can be used as a ΔELaBr3 − ETot telescope or, for very high energies, as a double energy loss detector (ΔELaBr3 + ΔELaCl3), in order to determine the initial energy. In addition, an experimental test with high energy protons (70–230 MeV) was performed at the cyclotron center in Krakow, Poland with a first prototype of 2 x 2 phoswich rectangular crystals (CEPA4) packed in an aluminum can (0.5 mm case). To simulate CEPA10 efficiencies and resolutions, optical pulses detected in CEPA4 by photomultiplier tubes with a DAQ system were used as energy input functions in Monte Carlo simulations.


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