\documentclass[11pt,twoside]{article} % Leave intact \usepackage{adassconf} % If you have the old LaTeX 2.09, and not the current LaTeX2e, comment % out the \documentclass and \usepackage lines above and uncomment % the following: %\documentstyle[11pt,twoside,adassconf]{article} \begin{document} % Leave intact \paperID{P1-1} %%%% ID=P1-1 \title{Data Archive and Transfer System (DARTS) of ISAS} %\titlemark{ } \author{Takayuki Tamura, Hajime Baba, Keiichi Matsuzaki,\\ Akira Miura, Iku Shinohara, and Fumiaki Nagase} \affil{PLAIN center, Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Japan} \author{Masahiko Fukushi and Kenji Uchida} \affil{Fujitsu Limited, Japan} %----------------------------------------------------------------------- % Contact Information %----------------------------------------------------------------------- % This information will not appear in the paper but will be used by % the editors in case you need to be contacted concerning your % submission. Enter your name as the contact along with your email % address. % % EXAMPLE: \contact{Dennis Crabtree} % \email{crabtree@cfht.hawaii.edu} % \contact{Takayuki Tamura} \email{ttamura@plain.isas.jaxa.jp} \paindex{Tamura, T.} \aindex{Baba, H.} \aindex{Matsuzaki, K.} \aindex{Miura, A.} \aindex{Shinohara, I.} \aindex{Nagase, F.} \aindex{Fukushi, M.} \aindex{Uchida, K.} \authormark{Tamura et al. } \keywords{astronomy, space: science, archives} \begin{abstract} % Leave intact \htmladdnormallinkfoot{The Data Archive and Transfer System}{http://www.darts.isas.jaxa.jp} (DARTS) is a central database for the scientific data obtained by satellites of the Institute of Space and Astronautical Science (ISAS) in Japan. We have archived and released the data from several past and current ISAS \htmladdnormallinkfoot{missions}{http://www.isas.jaxa.jp}. In the near future, the data from Astro-E2 (X-ray astronomy), Astro-F (Infrared astronomy), and Solar-B (solar physics) will be released from DARTS. These satellites will provide data sets much larger in quantity and quality than previous satellites. To manage these upcoming data, we are developing a new data management system. In addition, a new data distribution system on 'Super- SINET', which is an ultrahigh speed network dedicated to academic institutes in Japan, is under construction. \end{abstract} %----------------------------------------------------------------------- % Main Body %----------------------------------------------------------------------- % Place the text for the main body of the paper here. You should use % the \section command to label the various sections; use of % \subsection is optional. Significant words in section titles should % be capitalized. Sections and subsections will be numbered % automatically. % % EXAMPLE: \section{Introduction} % ... % \subsection{Our View of the World} % ... % \section{A New Approach} % % It is recommended that you look at the sample papers, sample1.tex % and sample2.tex, for examples for formatting references, footnotes, % figures, equations, html links, lists, and other special features. \section{Introduction} The DARTS project commenced in 1995 and with the public release of data from 1997 is maintained by the PLAIN Center (Center for PLAnning and INformation Systems) at ISAS in cooperation with various ISAS satellite teams. The objectives of DARTS are 1) to archive and release the ISAS mission data, 2) to provide search engines for the data users, 3) to provide an on-line data analysis system, 4) to provide information and links related to the data, and 5) to provide mirroring of the US and European mission data to Japanese and other Asian scientists. The system consists of a file server, www server, proxy server and analysis server along with data storage devices (see Miura et al. 2000 for details). % 1998! The total data size is several Tera bytes (TB) including the mirrored data. The main data catalogues are implemented in the Oracle database. \section{Current Services} The current DARTS services are summarized in Table~\ref{P1.1-tbl-1}. We have also provided mirroring services including the X-ray astronomical data of Beppo-SAX (SAX SDC, Italy) and ROSAT (MPE, Germany), solar observation data of TRACE and RHESSI, and CDAWeb. These data are mostly mirrored through NASA/GSFC. \begin{deluxetable}{lcl} \scriptsize \tablecaption{The current DARTS services. \label{P1.1-tbl-1}} \tablehead{ \colhead{Missions\tablenotemark{a}} & \colhead{target} & \colhead{Services \& Contents} } \startdata \multicolumn{3}{c}{Astrophysics} \\ \hline ASCA\tablenotemark{b} & x-ray & telemetry data \\ (1993/2-2001/3) & & screened/unscreened events\tablenotemark{c} \\ (340 GB) & & QL products\tablenotemark{c}\\ & & calibration data \\ \hline Ginga \tablenotemark{b} & x-ray & telemetry data (LAC)\\ (1987/2-1991/11) & & analysis software \tablenotemark{d} \\ (34 GB) & & \\ \hline Tenma & x-ray & Observation log\\ (1983/2-1989/1) & & \\ \hline HALCA\tablenotemark{b} & radio & public data \\ (1997/2-) & & \\ \hline IRTS & Infrared & point source Catalogue \\ (1995/3-1995/4) & & spatial intensity images \\ \hline \multicolumn{3}{c}{Solar Physics} \\ \hline Yohkoh & x-ray & raw and reprocessed data \\ (1991/8-) & & housekeeping data \\ & & observation log \\ & & daily images \\ \hline \multicolumn{3}{c}{Solar and Terrestrial Physics} \\ \hline Geotail & geomagnetosphere & magnetic field data\\ (1992-) & & plasma moment data \\ (8 GB) & & \\ \hline Akebono & aurora & orbital and instrumental information\\ (1989/2-) & & observation data \tablenotemark{e} \\ (25 GB) & & \\ \hline \enddata \tablenotetext{a}{Mission name following operation period and total data size in DARTS.} \tablenotetext{b}{Searchable by coordinate or target name.} \tablenotetext{c}{These products have been processed at NASA/GSFC.} \tablenotetext{d}{These tools were prepared by Ueda (ISAS) and others.} \tablenotetext{e}{Includes LEP, TED, SMS, RDM, ATV data.} \end{deluxetable} \section{Future Plan} Data from the forthcoming missions will be added to the DARTS archive in the near future. \begin{description} \item[Astro-E2] A Japanese-US X-ray astronomical satellite has been constructed and tested for launch in early 2005. The satellite will provide excellent spectroscopic resolution together with a very wide energy band, ranging from soft X-rays up to gamma-rays (0.3--600 keV). The data will be processed at ISAS and NASA/GSFC. The calibrated data will be distributed from and archived at DARTS (at NASA/HEASARC for US observers). The amount of telemetry data and science data will be about 1 GB/day and a few TB for the whole mission time. \item[Astro-F] This ambitious infrared mission is scheduled to be launched in late FY 2005. Astro-F will make an all-sky survey catalogue to much higher sensitivities (50 - 100 times higher at 100$\mu$m and more than 1000 times that at mid-infrared wavelengths), better spatial resolutions and wider wavelength coverage than the Infrared Astronomical Satellite (IRAS). The data will be processed at ISAS in collaboration with UK and Dutch scientists and delivered via DARTS. \item[Solar-B] A multi-wavelength solar mission planed to be launched in 2006. The observatory consists of a coordinated set of optical, X-ray and EUV telescopes. A new archive system, SODA (SOlar Database and Archive) based on Java and XML software, is under development. This will provide a data analysis platform for multi-wavelength solar observations, a central data base for Japanese observatories, and an effective data mining system. \end{description} \section{A New data storage system} To cope with future data expansion, we have been developing a system in ISAS based on the Storage Area Network (SAN) technology. In this system, all levels of the satellite data ranging from telemetry to public archive data are processed and stored. The system would provide not only fast access to data, but also cost reduction of the data administration. Fig.1 shows the system configuration. The central data storage is a FUJITSU hard disk array ($\sim 100$ TB in total, hardware-RAID) along with a Storagetek backup tape library. File servers are FUJITSU PRIMEPOWER (Solaris) and PRIMERGY (Linux). The storage, servers, and tape library are connected with each other by the fibre channel (G Bits/s) switches. \section{DARTS on the Super-SINET} Super-SINET is an ultrahigh speed network dedicated to academic institutes in Japan and operated by the National Institute of Informatics. ISAS and the National Astronomical Observatory (NAO) lead a sub-division of space and astronomical science. A direct and fast access to DARTS and other data bases at ISAS can be provided to several key institutes in Japan (13 sites are connected so far). The DARTS and NAO databases are also directly connected, for developing and sharing multi-wavelength astronomical data bases. Examples of the collaboration are \htmladdnormallinkfoot{jMAISON}{http://maison.isas.jaxa.jp} (Java-based Multi-wavelength Astronomical Image Service On line) and SODA (SOlar Database and Archive). \begin{figure}[h] %\vspace{0.2\textheight} %\epsscale{.70} \plotone{P1-1_f1.eps} %\plotone{figure.eps} \caption{A new data management system at ISAS, including DARTS.} \end{figure} \acknowledgments We thank C. Pearson for checking the manuscript. %----------------------------------------------------------------------- % References %----------------------------------------------------------------------- % \reference Tody, D.\ 1998, \adassvii, 146 % \reference Zacharias, N.\ \& Zacharias, M.\ 2003, % \adassxii, \paperref{P7.6} % % Note the following tricks used in the example above: % % o \& is used to format an ampersand symbol (&). % o \'e puts an accent agu over the letter e. See the User Guide % and the sample files for details on formatting special % characters. % o "\ " after a period prevents LaTeX from interpreting the period % as an end of a sentence. % o \aj is a macro that expands to "Astron. J." See the User Guide % for a full list of journal macros % o \adassvii is a macro that expands to the full title, editor, % and publishing information for the ADASS VII conference % proceedings. Such macros are defined for ADASS conferences I % through XI. % o When referencing a paper in the current volume, use the % \adassxii and \paperref macros. The argument to \paperref is % the paper ID code for the paper you are referencing. See the % note in the "Paper ID Code" section above for details on how to % determine the paper ID code for the paper you reference. % \begin{references} \reference Miura et al. 2000, \adassix, 180 % Was 1998 ! \end{references} % Do not place any material after the references section \end{document} % Leave intact