Ⅱ-3. Nuclear Data

RIKEN Accel. Prog. Rep. 47 (2014)

JCPRG-RNC joint workshop on nuclear data
M. Aikawa,∗1 A. Makinaga,∗1 S. Ebata,∗2 K. Katō,∗1 A. Kohama,∗3 H. Otsu,∗3 and H. Sakurai∗3
The Hokkaido University Nuclear Reaction Data
Centre (JCPRG)1) and RIKEN Nishina Center established a collaborative research contract in 2010 to increase the availability of the nuclear reaction data produced at the RIBF. Under the collaboration, the datafrom the RIBF are compiled into two databases, Nuclear Reaction Data File (NRDF) and the EXFOR library. The former is the JCPRG original database andthe latter is maintained by the International Networkof Nuclear Reaction Data Centres (NRDC) under theauspices of the International Atomic Energy Agency(IAEA).
The major part of the compilation process has been
well established during the collaboration period of fouryears2) . Furthermore, we are continuously improving
the coverage and usability of the data from the RIBF.
For such improvements, the ﬁrst JCPRG-RNC joint
workshop on nuclear data was held on August 8-9,
2013 (Fig. 1). Its purpose was to discuss and share
information on the following topics:

Fig. 1. Group photodiscussed the extension of the format for the RIBF experiments. Furthermore, the format must be communicable to authors, as well as readable to nuclear datausers. The format is now being constructed using theXML technology, which is both human-readable andmachine-readable3) . It is necessary to use a humanand machine-readable technology so as to enable theexperimentalists in directly inputting the data into thedatabases and nuclear data users in retrieving the data.
Another format for a simulation code PHITS is also requested from a participant.
In addition to the format extension, there is a request to create a new user interface to connect thedatabases not only with nuclear data users but alsowith nuclear physics experimentalists. The interface
makes it possible for the nuclear data users and theexperimentalists to interactively and directly accessthe databases. We developed an interface using theWebble World technology at the Hokkaido University
Meme Media Laboratory4) .
Nuclear reaction data are useful in many applicationﬁelds; e.g., nuclear physics, nuclear engineering, andradiation therapy. In the workshop, we focused on
two applications, nuclear transmutation and radiation
therapy. Two invited talks were devoted to these ﬁelds
in terms of the nuclear data point of view. We conﬁrm
the importance of the ﬁelds.
The workshop helped the participants in understanding the present and future status of the RIKENJCPRG research collaboration and related nuclear
data activities. We continue to exchange valuable information and requests with nuclear data users and experimentalists to improve our activity more eﬀectively.

(1) Current status and problems of compilation(2) Experiments at RIBF
(3) Usability of nuclear data
(4) Nuclear data evaluation
In this article, we brieﬂy report on the workshop.
As reported in another article2) , in 2013, we compiled 13 papers, which include experimental data fromthe RIBF. In the compilation, however, there still remain some problems such as the compilation scope,format, and author proofs. The compilation scope depends on the purpose of each database. For instance,
the incident particles compiled in NRDF and transmitted from JCPRG to the EXFOR library are restrictedto charged nuclei, mesons, and photons. Therefore, atthe moment, the electron scattering data with SCRIT
is outside the scope. Because of its importance, however, extension of the scope to include the SCRIT data
was discussed. In addition, we also discussed the necessity to compile papers published in other than peerreviewed journals such as proceedings and annual reports. Such papers are also important from the viewpoint of completeness, but in some cases, it is riskyto include results of the works under progress in thereports.
As for the format, the two databases were initiatedmore than 40 years ago; hence, it is diﬃcult to format these databases using the present-day state-of-theart experiments and physical quantities. Therefore we∗1
∗2∗3References
1) http://www.jcprg.org/
2) A. Makinaga et al.: in this report.
3) M. Aikawa et al.: in this report.
4) http://cow.meme.hokudai.ac.jp/WebbleWorldPortal/

Faculty of Science, Hokkaido University
Meme Media Laboratory, Hokkaido University
RIKEN Nishina Center- 73 -