Developments of a new data acquisition system at ANNRI

Nakao, Taro; Terada, Kazushi; Kimura, Atsushi; Nakamura, Shoji; Iwamoto, Osamu; Harada, Hideo; Katabuchi, Tatsuya*; Igashira, Masayuki*; Hori, Junichi*

EPJ Web of Conferences, 146, p.03021_1 - 03021_4, 2017/09

https://doi.org/10.1051/epjconf/201714603021

A new data acquisition system (DAQ system) in J-PARC Materials and Life Science Experimental Facility (MLF) ANNRI was developed. Increasing beam power of MLF in recent years allows beam line users to obtain high quantity experimental data yields. Compared to 2008, more than 20 times beam current is achieved in 2015. For the purpose to correspond strong beam power of MLF, a new DAQ system for the array of the Ge detectors in ANNRI is developed. The DAQ system is also going to be used for processing signals from a Li glass detector, which is under development at ANNRI for measurement of total neutron cross sections. Commissioning experiment of a new DAQ system at ANNRI was performed by using 0.1mmt Au sample with 500kW J-PARC proton beam power. An applicability of time-of-flight method for both neutron capture and total cross-sections measurements was checked. ADC and TDC nonlinearity, energy resolution, multi-channel coincidence and dead time performance for the array of the Ge detectors were also evaluated. The dead time value for Ge detectors was successfully decreased to 1/4 from the previous DAQ system with minor deterioration on energy resolution. The author would like to thank the accelerator and technical staff at J-PARC for operation of the accelerator and the neutron production target and for the other experimental supports. Present study includes the result of "Research and Development for accuracy improvement of neutron nuclear data on minor actinides" entrusted to the Japan Atomic Energy Agency by the Ministry of Education, Culture, Sports, Science and Technology of Japan (MEXT).

Charge-collection efficiency of single-crystal CVD diamond detector for low-energy charged particles with energies ranging from 100 keV to 2 MeV

Sato, Yuki; Murakami, Hiroyuki*; Shimaoka, Takehiro*; Tsubota, Masakatsu*; Kaneko, Junichi*

Nuclear Instruments and Methods in Physics Research A, 834, p.218 - 222, 2016/10

https://doi.org/10.1016/j.nima.2016.08.020

Beginner's course; Computing environment in MLF

Nakatani, Takeshi; Inamura, Yasuhiro

Hamon, 26(1), p.42 - 45, 2016/02

https://doi.org/10.5611/hamon.26.1_42

In the Materials and Life science experimental Facility (MLF) of J-PARC, the computing environment group was organized from the construction of MLF. The group has been developed and operated the neutron event-recording data acquisition (DAQ) system, the data analysis library and the device control software framework for neutron experimental instruments in MLF. In this article, we report the new developments as follows: The universal event-recording DAQ system to make the most of the intense neutrons; the data process framework to enable multi-dimensional data analysis at various neutron instruments; the remote access to be easily able to monitor a measurement status and handle many kinds of enormous data from anytime, anywhere.

Development status of data acquisition system for IFMIF/EVEDA accelerator

Usami, Hiroki; Takahashi, Hiroki; Komukai, Satoshi*

Proceedings of 12th Annual Meeting of Particle Accelerator Society of Japan (Internet), p.760 - 763, 2015/09

http://www.pasj.jp/web_publish/pasj2015/proceedings/PDF/WEP1/WEP101.pdf

EU and JAEA are advancing development of Linear IFMIF Prototype Accelerator (LIPAc) control system jointly, but JAEA keeps developing central control system (CCS) mainly. Data transfer during an equipment control system of CCS and EU is performed through EPICS. JAEA is using PostgreSQL as 1 of development elements in CCS and is advancing development of the system to record the whole EPICS data of LIPAc (the data acquisition system). On the other hand, a data acquisition is performed using BEAUTY (Best Ever Archive Toolset, yet) in an element test of equipment at Europe. Therefore "1 client refers to collected data by more than one server machine" with "compatibility securement of data with BEAUTY" in case of development of the data acquisition system of CCS, and, it's necessary to consider "To do a data acquisition and backup work at the same time". For the moment, former 2 are in progress. And a demonstration of the data acquisition system is being performed simultaneously with commissioning in injector. The data acquisition system is collecting data of injector other ones, and the data reference by a monitor with CSS (Control System Studio) is also possible. We will report on the current state of the development of the data acquisition system by making reference to a result of the test by injector commissioning.

Status and prospect of JT-60 plasma control and diagnostic data processing systems for advanced operation scenarios

Kurihara, Kenichi; Yonekawa, Izuru; Kawamata, Yoichi; Sueoka, Michiharu; Hosoyama, Hiroki*; Sakata, Shinya; Oshima, Takayuki; Sato, Minoru; Kiyono, Kimihiro; Ozeki, Takahisa

Fusion Engineering and Design, 81(15-17), p.1729 - 1734, 2006/07

https://doi.org/10.1016/j.fusengdes.2006.04.058

A large tokamak fusion device JT-60 is expected to explore more advanced tokamak discharge scenario towards the ITER and a future power reactor. We believe the following experimental issues are expected to be solved in JT-60. To clarify how to keep a steady-state plasma with high performance, and how to avoid plasma instabilities almost completely. By stimulus of this motivation, several essential development and modifications of plasma control and data acquisition systems have been performed in JT-60. In this report, we discuss the developments to improve the JT-60 plasma control and data acquisition systems. In addition, a future plasma control and data acquisition systems leading to a standard design for a power reactor is envisaged on the basis of the 20-year plasma operation experiences.

Development of a data acquisition system for a multiple -ray detection method

Kimura, Atsushi; Toh, Yosuke; Koizumi, Mitsuo; Osa, Akihiko; Oshima, Masumi; Goto, Jun; Igashira, Masayuki*

AIP Conference Proceedings 769, p.792 - 795, 2005/05

https://doi.org/10.1063/1.1945126

The aim of our study is the acquisition of neutron cross-section data for the minor actinides (such as Np, Am and Am). We develop a new advanced measurement technology for the acquirement of neutron cross-section data of the minor actinides. In this technology, we construct a 4 Ge-spectrometer which consists of 30 Ge crystals and BGO anti-Compton shields. Normally, a data acquisition system for such a big Ge spectrometer consists of many NIM modules; it requires large space; in addition, its cost of this system becomes huge. To overcome these problem, we developed a new data acquisition system for the 4 Ge-spectrometer with digital signal processing (DSP) techniques. This system consists of three Main ADC modules, which measure the energy of gamma rays with DSP technique, five Fast Timing modules and a Coincidence module to detect a coincidence condition and to measure timing data. All modules can be mounted a 19 inches VME sub-rack, the cost of this system is less than 2000 dollars per one Ge detector channel.

Radiation effect on pn-SiC diode as a detector

Kinoshita, Akimasa*; Iwami, Motohiro*; Kobayashi, Kenichi*; Nakano, Itsuo*; Tanaka, Reisaburo*; Kamiya, Tomihiro; Oi, Akihiko; Oshima, Takeshi; Fukushima, Yasutaka*

Nuclear Instruments and Methods in Physics Research A, 541(1-2), p.213 - 220, 2005/04

https://doi.org/10.1016/j.nima.2005.01.059

no abstracts in English

State of JT-60 data processing system

Kiyono, Kimihiro; Oshima, Takayuki; Sakata, Shinya; Sato, Minoru; Ozeki, Takahisa; Matsuda, Toshiaki

Heisei-16-Nendo Osaka Daigaku Sogo Gijutsu Kenkyukai Hokokushu (CD-ROM), 4 Pages, 2005/03

State of JT-60 Data Processing System

Analysis of transient current induced in silicon carbide diodes by oxygen-ion microbeams

Oshima, Takeshi; Sato, Takahiro; Oikawa, Masakazu*; Yamakawa, Takeshi; Onoda, Shinobu; Wakasa, Takeshi; Laird, J. S.; Hirao, Toshio; Kamiya, Tomihiro; Ito, Hisayoshi; et al.

Proceedings of the 6th International Workshop on Radiation Effects on Semiconductor Devices for Space Application (RASEDA-6), p.177 - 180, 2004/10

no abstracts in English

Control and data acquisition of CAMAC for JT-60 data processing system

Sato, Minoru; Matsuda, Toshiaki

Heisei-15-Nendo Koenerugi Kasokuki Kenkyu Kiko Gijutsu Kenkyukai Hokokushu (CD-ROM), 3 Pages, 2004/00

no abstracts in English