7–12 May 2023
Venice, Italy
Europe/Zurich timezone

Improvement of the longitudinal phase space tomography at the J-PARC synchrotrons

THPL105
11 May 2023, 16:30
2h
Sala Laguna

Sala Laguna

Poster Presentation MC6.T03: Beam Diagnostics and Instrumentation Thursday Poster Session

Speaker

Hidefumi Okita (High Energy Accelerator Research Organization)

Description

The longitudinal phase space tomography, which reconstructs the phase space distribution from the one-dimensional bunch profiles, is used in various accelerators to measure longitudinal beam parameters. At the J-PARC, an implementation of the phase space tomography based on the convolution back projection method has been used to measure the momentum spread of the injected beam. The method assumes that the beam distribution rotates without significant deformation during the synchrotron oscillation. Because of the nonlinearity of synchrotron motion with sinusoidal RF voltage, the method can be used only in limited situations such as small amplitude synchrotron oscillation. Algebraic Reconstruction Techniques (ART) in conjunction with particle tracking, which is implemented in CERN's tomography code, allows accurate reconstructions even for nonlinear large amplitude synchrotron oscillations. We present the overview of the application of CERN's tomography code to the J-PARC synchrotrons. The results of benchmarking are also reported.

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Primary author

Hidefumi Okita (High Energy Accelerator Research Organization)

Co-authors

Chihiro Ohmori (Japan Proton Accelerator Research Complex (J-PARC)) Dr David Kelliher (Science and Technology Facilities Council) Fumihiko Tamura (Japan Atomic Energy Agency) Katsushi Hasegawa (High Energy Accelerator Research Organization) Keigo Hara (High Energy Accelerator Research Organization) Masahiro Nomura (Japan Atomic Energy Agency) Masahito Yoshii (High Energy Accelerator Research Organization) Masanobu Yamamoto (Japan Atomic Energy Agency) Pranab Saha (Japan Proton Accelerator Research Complex (J-PARC)) Simon Albright (European Organization for Nuclear Research) Taihei Shimada (Japan Atomic Energy Agency) Yasuyuki Sugiyama (High Energy Accelerator Research Organization)

Presentation materials

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