Computing and Network Team

This team is in charge of development, management and operation of the computing and network environment, mail and information servers and data acquisition system, and management of the information security. We are operating Linux/Unix NIS/NFS cluster system for the data analysis of the experiments and general computing. We are operating mail server of Nishina Center which is capable of tagging spam mails and isolating virus-infected mail. Encrypted communications with the mail server enables us the secure and stable E-mail access from the remote place. We are operating several information servers such as WWW servers, Wiki servers, Groupware servers, Windows-Media and Quick-Time streaming servers, and an anonymous FTP server (ftp.riken.jp). We are developing a data-acquisition (DAQ) system for the RIBF. This DAQ system has functions of network-distributed data processing, hierarchical event building and parallel readout which are achieved with newly developed software and commodity hardware. This system merges data taken by different DAQ systems based on the time stamp.This DAQ system is both versatile and scalable, allowing it to meet the various requirements for RIBF experiments.

Research Subjects

• Development, management and operation of the computing for research
• Development, management and operation of the mail and information servers
• Development, management and operation of the data acquisition system
• Development, management and operation of the network environment
• Management of the information security

Publications

1. T. Ichihara et al.:
   "Isovector Quadrupole resonance observed in the 60Ni(13C,13N)60Co Reaction at E/A=100 MeV"
   Phys, Rev. Lett. 89 142501 (2002)
2. T. Ichihara et al.:
   "Charge Exchange Reaction 12C(12C,12N)12B at E/A=135 MeV"
   Phys. Lett. B 323 278 (1994)
3. T. Ichihara et al.:
   "Spin-flip and non-spin-flip isovector excitations observed in the (12C,12N) reactions at E/A=135 MeV and the (13C,13N)reactions at E/A = 100 MeV"
   Nucl. Phys. A583 109c (1995)
4. T. Ichihara et al.:
   "Spin-Isospin resonance observed in the (d,2He) and (12C,12N) reactions at E/A = 135 MeV"
   Nucl. Phys. A569 287c (1994)
5. T. Ichihara et al.:
   "Excitation of spin-diple states by the 12C(12C,1212N)12B reactions at E/A = 135 MeV"
   Nucl. Phys. A577 93c (1994)
6. T. Ichihara,Y. Watanabe, K.Yoshida, and A.Yoshida,:
   "Computing and Network environment at RIKEN Nishina Center"
   RIKEN Accel. Prog. Rep. 43 P.221 (2009)
7. H. Baba, T.Ichihara, T.Ohnishi, S.Takeuchi, K.Yoshida, Y.Watanabe,S. Ohta and S. Shimoura.:
   "Time Stamping System for RIBF Experiment."
   RIKEN Accel. Prog. Rep. 43 P.222 (2009)
8. T. Ichihara et al.:
   "Data Transfer between RIKEN and BNL with GridFTP"
   http://www.sinet.ad.jp/advnet2008_file/ichihara-riken.pdf
9. T. Ichihara,:
   "Data Transfer between RIKEN and BNL with GridFTP"
   http://www.jp.apan.net/meetings/0710-noc/CCJWAN2007.pdf
10. H. Baba, T. Ichihara, T. Ohnishi, S. Takeuchi, K. Yoshida, Y. Watanabe, S. Ota, and S. Shimoura,:
    "New data acquisition system for the RIKEN Radioactive Isotope Beam Facility"
    Nucl. Instru. Method. A616 (2010) 65-68