Precise Determination of Atmospheric Neutrino Flux

大气中微子通量的精确测定

• 批准号: 07454047
• 负责人: ORITO Shuji
• 金额: $ 4.93万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1995
• 资助国家: 日本
• 起止时间: 1995 至 1996
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07454047/
• 关键词: Atmospheric Neutrino; Primary Proton Flux; Muon Flux; BESS Spectrometer; エアロジェルチェレンコフカウンタ; 一次宇宙線陽子スペクトラム

In order to determine the absolute flux of the atmospheric neutrinos, the following studies were carried out :(1)A shower counter system and an Aerogel Cherenkov counter system were developed and constructed to improve the particle identification capability of the BESS superconducting spectrometer.(2)A balloon-borne experiment was carried out in the summer, 1995 in northern Canada to measure spectra of primary cosmic rays. Energy spectrum of protons in the energy region from 0.4 to 100 GeV was obtained with an estimated systematic accuracy of 10%. The effect of solar modulation was also clearly observed.(3)Measurements of cosmic ray muon spectrum were performed in Japan and northern Canada in the winter, 1995, and the summer, 1996, respectively. Cosmic ray muon energy spectra in the momentum range between 0.4 and 100 GeV/c were obtained with a systematic accuracy of 2%.(4)A simulation program for interactions between primary cosmic rays and the air has been developed.

为了测量大气中微子的绝对通量，开展了以下研究工作：（1）研制和建造了簇射计数器系统和气凝胶切伦科夫计数器系统，以提高BESS超导谱仪的粒子识别能力。(2)A 1995年夏天在加拿大北方进行了一次球载实验，测量初级宇宙线的光谱。获得了0.4 ~ 100 GeV能区的质子能谱，估计系统精度为10%。还清楚地观察到太阳调制的效果。（3）分别于1995年冬和1996年夏在日本和加拿大北方进行了宇宙线μ子谱的测量。获得了动量范围在0.4至100 GeV/c之间的宇宙线μ子能谱，系统准确度为2%。(4)A研制了初级宇宙线与大气相互作用的模拟程序。

项目成果

M.Motoki: "A Precise Measurement of the Flux of Atmospheric Muons and Antoprotons" Doctoral Thesis, Kobe University. (1997)

M.Motoki：“大气 μ 子和质子通量的精确测量”博士论文，神户大学。

BESS Collaboration: "Proceedings of 6th Workshop on Balloon-Boorne Experiment with a Superconducting Solenoid Spectrometer" KEK Proceedings. 96-9. (1996)

BESS 合作：“第六届超导螺线管光谱仪气球-伯恩实验研讨会论文集”KEK 论文集。

K.Anraku: "Status and Result from BESS" Adv.Space Res.17・9. 101-110 (1996)

K.Anraku：“BESS 的状态和结果”Adv.Space Res.17・9（1996）。

M.Nozaki et al.: "Rerformance of BESS Detector" Proc.24^<th> IntL.Cosmic Ray Conf.(Rome). 3. 579-582 (1995)

M.Nozaki 等人：“BESS 探测器的改造”Proc.24^<th> IntL.Cosmic Ray Conf.（罗马）。

E,S.Seo et al.: "Measurement of Cosmic Ray H and He Isotopes in a Balloon Borne Experiment with a Superconducting Solenoid Spectrometer" Adv.Space Res.19. (5)751-(5)754 (1997)

E,S.Seo 等人：“使用超导螺线管光谱仪在气球运载实验中测量宇宙射线 H 和 He 同位素”Adv.Space Res.19。