Development status of software 'Utsusemi' for Chopper Spectrometers at MLF, J-PARC

We report the current status of software development for chopper spectrometers at Materials and Life Science Facility (MLF), the Japan Proton Accelerator Research Complex (J-PARC). Our software, named Utsusemi, has already been utilized in actual users measurements, while we are proceeding with developments for more effective use of high flux neutrons and event-recording methods.