Search for cosmic-ray antiparticles of primary origins by ballooning a superconducting spectrometer in Antarctica

通过在南极洲安装超导光谱仪来寻找宇宙射线反粒子的主要来源

• 批准号: 13001004
• 负责人: YAMAMOTO Akira
• 金额: $ 333.63万
• 依托单位: High Energy Accelerator Rresearch Organization (KEK) (2004-2005)The High Energy Accelerator Research Organization (2001-2003)
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Specially Promoted Research
• 财政年份: 2001
• 资助国家: 日本
• 起止时间: 2001 至 2005
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-13001004/
• 关键词: Primordial Antiparticle; Cosmic Rays; Superconducting Spectrometer; Antarctic Ballooning; Solar Activitiy; Modulation; Primordial Black Holes; Supersymmetric Particles; Antimatter; 反粒子; 宇宙起源; 超伝導; スペクトロメータ; 南極; 気球実験; ブラックホール; ブラックホー; 科学観測

The BESS-Polar experiment has been carried out to investigate elementary particle phenomena in early Universe through a precise measurement of low-energy antiprotons spectrum and search for antimatter in cosmic-ray with a long duration balloon flight over Antarctica. The experiment has been carried out in cooperation of KEK, Univ. Tokyo, Kobe Univ., ISAS, NASA-GSFC, Univ. Maryland, and Denver Univ.In JYF 2005, the spectrometer performance was confirmed with accelerator beam test, and further data analysis was carried out. The analysis needed to be extended in JFY2006 in order to improve the analysis and to finalize the results. Finally, we have detected more than 1500 antiproton flux in the energy region 0.1-4.2 GeV with the long duration flight in Antarctica.The energy spectrum generally agreed with the theoretical model for the secondary product in cosmic-rays. It is reasonably understood, based on the observation period of a transient period of the solar activity transient to the coming solar minimum period.The result gives us a basic understanding the antiproton spectrum in the transient period to be compared with the measurement to be carried out in the next solar minimum period in 2007. The further investigation will become very much important.

通过对低能反质子能谱的精确测量和对宇宙射线中反物质的长期探测，开展了BESS-Polar实验，以研究早期宇宙中的基本粒子现象。该实验是与KEK、东京大学、科比大学、在2005年的JYF中，利用加速器束流测试验证了谱仪的性能，并进行了进一步的数据分析。在2006年日本财政年度，需要扩大分析范围，以改进分析并最终确定结果。最后，我们在南极长航时探测到了0.1- 4.2GeV能区的1500多个反质子通量，其能谱基本符合宇宙线次级产物的理论模型。根据太阳活动过渡到太阳活动极小期的一个过渡期的观测周期，给出了合理的理解，并与2007年下一个太阳活动极小期的观测结果进行了比较，对过渡期的反质子谱有了基本的了解。进一步的调查将变得非常重要。

项目成果

Meausrements of Primary and Atmospheric Cosmic-Ray Spectro with the BESS TeV Spectrometer

使用 BESS TeV 光谱仪测量初级和大气宇宙射线光谱

• 发表时间: 2004
• 期刊: Phys.Letters B594
• 作者: A;Yamamoto et al.;H.Fuke et al.;H.Fuke et al.;J.Mitchell et al.;Y.Makida et al.;H.Fuke et al.;T.Yoshida et al.;T.Yoshida et al.;A.Yamamoto et al.;M.Nozaki;J.Mitchell et al.;T.Yoshica et al.;S.Haino et al.;S.Haino et al.
• 通讯作者: S.Haino et al.

ビッグバン-宇宙の誕生と未来-(第18回「大学と科学」公開シンポジウム講演収録集)

大爆炸-宇宙的诞生与未来-（第十八届“大学与科学”公开研讨会讲座集）

• 发表时间: 2004
• 作者: A;Yamamoto et al.;H.Fuke et al.;H.Fuke et al.;J.Mitchell et al.;Y.Makida et al.;H.Fuke et al.;T.Yoshida et al.;T.Yoshida et al.;A.Yamamoto et al.;M.Nozaki;J.Mitchell et al.;T.Yoshica et al.;S.Haino et al.;S.Haino et al.;A.Yamamoto (as a contributer);山本明(共著)
• 通讯作者: 山本明(共著)

Akira Yamamoto: "A thin superconducting solenoid magnet for astroparticle physics"Nuclear Physics B (Proc.Suppl.). 113. 299-302 (2002)

Akira Yamamoto：“用于天体粒子物理学的薄型超导螺线管磁体”《核物理学 B》（Proc.Suppl.）。

Akira Yamamoto, Yasuhiro Makida: "Advances in superconducting magnets for high energy physics and astroparticle physics"Nucl.Inst. And Methods. A494. 255-265 (2002)

Akira Yamamoto、Yasuhiro Makida：“用于高能物理和天体粒子物理的超导磁体的进展”Nucl.Inst。

Search for cosmic-ray antideuterons.

• DOI: 10.1103/physrevlett.95.081101
• 发表时间: 2005-04
• 期刊: Physical review letters
• 影响因子: 8.6
• 作者: H. Fuke;T. Maeno;K. Abe;S. Haino;Y. Makida;S. Matsuda;Hiroshi Matsumoto;J. Mitchell;A. Moiseev;J. Nishimura;M. Nozaki;S. Orito;J. Ormes;M. Sasaki;E. Seo;Y. Shikaze;R. Streitmatter;Junichi Suzuki;Kazushi Tanaka;K. Tanizaki;T. Yamagami;A. Yamamoto;Y. Yamamoto;K. Yamato;T. Yoshida;K. Yoshimura