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Abstract

Energy deposition in spallation target induced by energetic protons is the foundation and the premise of the spallation target research. In this paper, several intra-nuclear cascade models including BERTINI, ISABEL, CEM2K and INCL4 contained in MCNPX package, together with FLUKA and PHITS Monte Carlo codes are used to calculate the energy deposition in lead (Pb) and tungsten (W) spallation target impinged by 800, 1000, and 1200 MeV protons. The contributions of different particles to the total energy deposition in the Pb target are obtained and compared with each other as well. The energy deposition distribution caused by 250 MeV protons in the W target is measured with thermoluminescence detectors (TLDs). The results indicate that the calculations from the MCNPX accord with experimental data, verifying that the Monte Carlo code has a high reliability for energy deposition simulation.

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Authors and contacts

Corresponding author:Yu Quan-Zhi,qzhyu@iphy.ac.cn

Funds:Project supported by the National Natural Science Foundation of China (Grant Nos. 91226107, 11575289) and the Chinese Academy of Sciences Key Technology Talent Program

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References

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粒子	800 MeV		1000 MeV		1200 MeV
粒子	沉积能量/MeV	对总能量沉积值的占比/%	沉积能量/MeV	对总能量沉积值的占比/%	沉积能量/MeV	对总能量沉积值的占比/%
全部粒子	497.9	100	572.0	100	648.7	100
质子	413.9	83.13	435.6	76.15	455.0	70.15
光子	47.5	9.54	74.8	13.08	104.0	16.03
π₀	0.2	0.04	0.4	0.06	0.5	0.08
带电π介子(± π)	6.6	1.33	13.7	2.39	21.9	3.37
氘	13.7	2.75	21.2	3.71	29.0	4.47
氚	5.0	1.01	8.5	1.48	12.3	1.90
氦–3	2.8	0.57	5.1	0.90	8.0	1.23
α粒子	6.1	1.23	10.1	1.77	14.6	2.26
中子	2.0	0.40	2.7	0.47	3.3	0.51
初级质子电离作用	268.8	52.73	247.9	48.63	233.1	45.72

DownLoad: CSV

粒子	BERTINI		ISABEL		CEM2 K		INCL4
粒子	沉积能量/MeV	对总能量沉积值的占比/%	沉积能量/MeV	对总能量沉积值的占比/%	沉积能量/MeV	对总能量沉积值的占比/%	沉积能量/MeV	对总能量沉积值的占比/%
全部粒子	580.3	100	603.0	100	572.0	100.00	594.5	100
质子	474.0	81.67	493.0	81.76	435.6	76.15	500.6	84.20
光子	63.7	10.98	76.2	12.64	74.8	13.08	60.7	10.21
π₀	0.3	0.05	0.3	0.05	0.3	0.06	0.3	0.04
带电π介子(± π)	14.9	2.56	13.9	2.31	13.7	2.39	15.5	2.60
氘	6.4	1.10	3.7	0.62	21.2	3.71	4.0	0.67
氚	3.0	0.52	1.9	0.32	8.5	1.48	1.8	0.30
氦–3	0.4	0.06	0.1	0.02	5.1	0.90	0.2	0.03
α粒子	14.8	2.56	11.8	1.96	10.1	1.77	9.1	1.53
中子	2.9	0.49	1.9	0.32	2.7	0.47	2.5	0.42
初级质子电离作用	245.1	48.06	243.6	47.79	247.9	48.63	245.0	48.06

DownLoad: CSV

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Vol. 70, Issue 5 - 2021-03-05

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