Search for Exotic Mesons-GAMS Collaboration

寻找奇异介子-GAMS 合作

• 批准号: 04044159
• 负责人: TSURU Tsuneaki
• 金额: $ 18.43万
• 依托单位: National Laboratory for High Energy Physics
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for international Scientific Research
• 财政年份: 1992
• 资助国家: 日本
• 起止时间: 1992 至 1994
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-04044159/
• 关键词: Meson Spectroscopy; Exotic Meson; Glueball; Hybrid; QCD; Multi-Quark Meson; Non qq Meson; Quark Model; GAMS4000; GAMS4π; データ解析; π°π°,π°7,77; GAMS【symmetry】OMEGA; 検出器系開発; 重結晶体・P_6WO_4; CERN; IHEP; 中心衝突生成追程; IHEP(プロトビノ); 荷電交換反応; 部分波解析

After the end of data taking of NA12/2 experiment, the GAMS4000 spectrometr was moved in March-April, 1994 from the North Hall to the West Hall and was combined with the WA91 OMEGA spectrometer. The new spectrom eter system, Which appeared as a good charged and gamma spectrometer, was checked in April and the data taking was started in May and continued successfully till August. The data analysis shows the spectrometer worked quite well and high statistics data were accumulated through the whole data run. In September, 1994, the CERN SPSLC approved our new proposal as an experiment WA102 and the 100 days run in next year 1995. In 1996 another 100 days run is expected. KEK group contributes to the data acquisition system and the upgrade of the TOF detector around the target.The DST's of 1991 and 1993 of NA12/2 were completed by Dr.T.Kinashi et al.. and the analysis gives new information of eta pi^0 and pi^0pi^0 system. The analysis of eta pi^0pi^0 system is also progressing.On the other … More hand, the check of the GAMS-4pi spectrometer was done in November-December, 1994 at Protovino, Russia and now the spectrotometer is ready for the data taking. It is expected this data run will give new information of high spin states. The test of a PWO heavy crystal was also done in December.Prof.A.A.Lednev of IHEP,Russia, who was invited by Monbusho during February-October, 1994, worked for the data analysys of the 1991 and 1992 run data obtained at IHEP.He finished production of the DST's.and did the analysis of eta pi^0 system. The result will appear in coming conferences.On the other hand, the detector R&Ds are also done successfully. High performance TDC and ADC were developed for the TOF system of the WA102 experiment at CERN.A high gain and low noise preamplifier is developed for the PWO and/or MicroStrip Gas Chambers by A.K.Konoplyannikov and S.Inaba et al.. A new calorimeter using heavy crystal of PWO was studied at IHEP,LAPP and KEK.This has been expected as a material of the high energy physics experiment of next generation. The result of test of a prototype PWO hodoscope was submitted and will be published.In the frame of GAMS colllabration, J.P.Stroot and Yu.D.Prokoshkin visited KEK to discuss about the data analysis and also about the collaboration. Academician A.A.Logunov, director of IHEP visted KEK to prolong the GAMS collaboration between IHEP and KEK for another 5 years. Less

1994年3 ~ 4月，NA 12/2实验数据采集结束后，GAMS 4000谱仪由北厅移至西厅，与WA 91 OMEGA谱仪合并。新的伽马能谱仪系统是一个很好的带电和伽马能谱仪，于4月进行了检查，数据采集于5月开始，一直成功地持续到8月。数据分析表明，该谱仪工作良好，在整个数据运行过程中积累了较高的统计数据。1994年9月，CERN SPSLC批准了我们的新建议，将其作为实验WA 102，并于1995年进行100天的实验。预计1996年将再运行100天。KEK集团为数据采集系统和目标周围TOF探测器的升级做出了贡献。1991年和1993年的NA 12/2的DST由Dr.T.Kinashi等人完成。分析给出了eta pi^0和pi^0pi^0系统的新信息。eta pi^0 pi^0系统的分析也在进行中。另一方面 ...更多信息 1994年11 - 12月在俄罗斯Protovino对GAMS-4pi谱仪进行了检查，目前已准备好进行数据采集。预计这一数据运行将提供高自旋态的新信息。1994年2月至10月，俄罗斯IHEP的A.A.Lednev教授应Monbusho的邀请，对IHEP 1991年和1992年的运行数据进行了数据分析，完成了DST的制作，并对eta pi ^0系统进行了分析。另一方面，探测器的研制也取得了一定的进展。高性能TDC和ADC是为CERN WA 102实验的TOF系统研制的，高增益低噪声ADC是由A.K. Konoannikov和S.Inaba等人为PWO和/或微带气体室研制的。在IHEP、LAPP和KEK研究了一种新的PWO重晶体量热计，它有望成为下一代高能物理实验的材料。在GAMS合作框架内，J. P. Stroot和Yu.D.Prokoshkin访问KEK，讨论数据分析和合作事宜。IHEP主任A.A. Logan院士访问KEK，将IHEP和KEK之间的GAMS合作再延长5年。少

项目成果

Y.Yasu & Y.Tajima: "Performance Evaluation Tool of DAQ Computer DAQBENCH" Proc.of the International Conference on Event Building & EventData Readout in Medium & High Energy Phsics Experiments Fermilab, Batavia, Oct.1994 KEK Preprint 94-137. (1994)

亚苏

D.Alde 他: "Further Studies of X(1910)Meson" Physics Letters B. 276. 375-378 (1992)

D.Alde 等人：“X(1910)介子的进一步研究”《物理快报》B. 276. 375-378 (1992)

Y.Yasu and Tajima: "Per for unance evaluation fool of DAQ Computer DAQBENCH" Proceedings of the International Conference on Event Building x Event Data Readoutin Medium & High-Energy Physics Experiments,*,Oct,1994. (掲載予定)KEK Preprint 94-137 Nov.1994.

Y.Yasu 和 Tajima：“Per for unance 评估傻瓜的 DAQ 计算机 DAQBENCH”国际事件构建 x 中高能物理实验事件数据读出会议论文集，*，1994 年 10 月（待出版）KEK 预印本。 1994 年 11 月 94 -137 日。

S.Inaba 他: "Multi-Agent CAMAC Crate Controller with Trident 32-bit Transputer" IEEE Nuclear Science Symposium,San Francisco,California,USA Novembre 1993. (掲載予定) (KEK Preprint,93-148 1993).

S. Inaba 等人：“Multi-Agent CAMAC Crate Controller with Trident 32-bit Transputer”IEEE Nuclear Science Symposium，美国加利福尼亚州旧金山，1993 年 11 月。（待出版）（KEK 预印本，93-148 1993）。

Y.Yasn and Y.Tajima: "Lynx-HP and DAQ-System" Proceeding of the 3nd meetingon Computer Aided Astronouical Instanments,Nat,Astro,Obs,Mitaka,Tokyo,Dec.1994. (掲載予定)KEK Preprint 94-191 Feb.1995.

Y.Yasn 和 Y.Tajima：“Lynx-HP 和 DAQ 系统”计算机辅助天文仪器第三次会议论文集，Nat，Astro，Obs，Mitaka，东京，1994 年 12 月（计划出版）KEK 预印本 94。 -191 1995 年 2 月。