Studies on the Backgrounds of DAMA Experiments

SHENG Xiang-Dong; DAI Chang-Jiang; HE Hui-Lin

Chinese Physics C> 2003, Vol. 27> Issue(9) : 779-783

Studies on the Backgrounds of DAMA Experiments

Key Laboratory of Cosmic Ray and High Energy Astrophysics, Institute of High Energy Physics, CAS, Beijing 100039, China

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Abstract：
Some results have been introduced on China-Italy DAMA cooperation--100kg NaI(Tl) crystal set-up experiments. There are lots of background problems need to be studied carefully, which would affect the results of DAMA experiments. Here, the radiation backgrounds in 100kg NaI(Tl) set-up have been studied by Beijing Group, and the Monte-Carlo simulation results are in good coincidence with the measurement of DAMA experiments. In addition, the contribution coming from fast neutrons' or solar neutrinos' interactions have been obtained through the simulation, which made very small effects on the experiments.

References

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. Bernabei R et al.Phys.Lett.,2000,B480:232. Belli P et al.ILNUOVO CIMENTO ,1989,A101:6 3. DAI Neng-Xiong,LI Ji-Zhou,GAO Liang-Jun.Sub Atomic Physics Handbook.Beijing:Science Publishing House,1995,210(in Chinese)(戴能雄,李际周,高良俊.亚原子物理学手册.北京:科学出版社,1995,210) 4. YAO Zhi-Guo.The Study of Searching for Unknown Massive Particles in Cosmic Rays(Doctor Thesis).IHEP of Chinese Academy of Sciences,1998(in Chinese)(姚志国.在宇宙线中寻找未知重粒子的实验研究(博士论文).中国科学院高能物理研究所,1998) 5. Bahcall J,Pinsonneault.Rev.Mod.Phys.,1992,64:885 6. Bernabei R et al.Astroparticle Physics,1995,4:45

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SHENG Xiang-Dong, DAI Chang-Jiang and HE Hui-Lin. Studies on the Backgrounds of DAMA Experiments[J]. Chinese Physics C, 2003, 27(9): 779-783.

SHENG Xiang-Dong, DAI Chang-Jiang and HE Hui-Lin. Studies on the Backgrounds of DAMA Experiments[J]. Chinese Physics C, 2003, 27(9): 779-783. shu

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Received: 2003-03-14
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Studies on the Backgrounds of DAMA Experiments

Corresponding author: HE Hui-Lin,

Key Laboratory of Cosmic Ray and High Energy Astrophysics, Institute of High Energy Physics, CAS, Beijing 100039, China

Received Date: 2003-03-14
Accepted Date: 1900-01-01
Available Online: 2003-09-05

Abstract: Some results have been introduced on China-Italy DAMA cooperation--100kg NaI(Tl) crystal set-up experiments. There are lots of background problems need to be studied carefully, which would affect the results of DAMA experiments. Here, the radiation backgrounds in 100kg NaI(Tl) set-up have been studied by Beijing Group, and the Monte-Carlo simulation results are in good coincidence with the measurement of DAMA experiments. In addition, the contribution coming from fast neutrons' or solar neutrinos' interactions have been obtained through the simulation, which made very small effects on the experiments.