Utsusemi Portal Site

Installations

Infomation about Utsusemi Installation and download of required files is contained on the Installation Portal Site below.

• Installation Portal for Utsusemi (Outer site)

In this site, you can see the installation documents and download installer files, for example the debian package for Ubuntu Linux, the binary installer for Windows and macOS and so on.

Documentations

Licence

Utsusemi is open source and is free to be distributed.

• LICENCE

Contact person

Dr. Yasuhiro Inamura (J-PARC center, Japan Atomic Agency, JAPAN)

Please send the bug report if you meet.

• installation fails, errors happen, something wrong on GUI, ...
• If you have questions about data reduction or analysis of your data, please contact to the instrument staffs at first.

What Utsusemi can do

MLF adopted an event recording method for the DAQ system that records events including the time of flight and the position of the neutron detection. The most important function of Utsusemi is conversion from event-recording data produced from the MLF DAQ system to histogram data for easy understanding and visualization of the measurement results. This conversion function is very flexible. Using the information of event data like TOF, position of neutron detections, and absolute time, users can make histogram data from any TOF range and time region from measurement data. This enables users to easily measure the time-transient phenomena of the sample.

Users can select time widths of time-slicing after the measurement, since event data is adopted. In addition, we successfully developed a DAQ electric module, TrigNET, which records common electric signals as events. By analyzing TrigNET events connected with instruments and SE equipment, neutron events can be filtered for each condition.

The Utsusemi event conversion supports most types of detectors utilized at MLF-for example, 3He gas position sensitive detector, 1D- and 2D scintillation counters, and so on.

Many Beam Lines introduce Utsusemi

Developments

Utsusemi software is written in C++, based on the Manyo Library framework [2] and Python (Python3). All main functions are included in C++ codes for the processing speed and can be used from the Python interface. Utsusemi also has the GUI written in Python code and uses its libraries. Because the user interface of Utsusemi is unified in Python, it is easy for users to make new functions or analysis procedures tailored to users' specific needs with Utsusemi commands.

The development of Utsusemi started from the software development for the chopper-type neutron inelastic measurement, which includes the device control system, data analysis, and visualization. These development products were utilized in actual user measurements at the chopper spectrometers at MLF, while we were proceeding with development of effective analysis for event recording data. In particular, we successfully contributed to the realization of the Multi-Ei method for inelastic scattering for the first time in the world [3]. As the other beamlines also required event-recording analysis, we made the data reduction and visualization parts in Utsusemi independent of the original to give it greater transferability as universal analysis software at MLF. We also produced additional packages based on Ustsusemi for each beamline. As a result, Utsusemi is introduced in a lot of beamlines at MLF to become one of the frameworks for data reduction and analysis.