11-15 February 2024
TFZ Wiener Neustadt
Europe/Berlin timezone

Application of numerical optimisers to the particle loss minimization at the SIS18 septum during slow extraction

13 Feb 2024, 15:00
20m
TFZ Wiener Neustadt

TFZ Wiener Neustadt

Viktor Kaplan-Straße 2, 2700 Wiener Neustadt, Austria
Oral presentation Managing Extraction Efficiency

Speaker

Olha Kazinova (TU Darmstadt)

Description

Uncontrolled beam loss at the electrostatic septum is a performance limit for hadron accelerators delivering slow-extracted beam to fixed-target experiments. The application of numerical optimizers has been shown to reduce such beam loss. The efficiency depends on the parameters to optimize, the details of the extraction process and the used hardware. In this presentation, the minimization of losses by optimizing the extraction efficiency for the present GSI heavy ion synchrotron SIS18 is described. Three different algorithms were used for that – Nelder-Mead, Powell and COBYLA. Varying two parameters of the sextupole settings allows to halve the beam losses. The advantages and limitations are discussed as well as future plans for improvement.

Primary author

Olha Kazinova (TU Darmstadt)

Co-author

Stefan Sorge (GSI Helmholtzzentrum für Schwerionenforschung GmbH(GSI))

Presentation Materials