TY  - JOUR
AU  - Niedermayer, Philipp
AU  - Singh, Rahul
TI  - Excitation signal optimization for minimizing fluctuations in knock out slow extraction
JO  - Scientific reports
VL  - 14
IS  - 1
SN  - 2045-2322
CY  - [London]
PB  - Macmillan Publishers Limited, part of Springer Nature
M1  - GSI-2024-00572
SP  - 10310
PY  - 2024
N1  - This article is licensed under a Creative Commons Attribution 4.0 International License
AB  - The synchrotron is a circular particle accelerator used for high energy physics experiments, material and life science, as well as hadron cancer therapy. After acceleration to the desired energies, particle beams are commonly extracted from the synchrotron using the method of resonant slow extraction. The goal is to deliver a steady particle flux—referred to as spill—to experiments and treatment facilities over the course of seconds while slowly emptying the storage ring. Any uncontrolled intensity fluctuations in the spill are detrimental to the efficiency of beam usage, as they lead to detector pileups or detector interlocks, hindering experiments and cancer treatment. Among the most widely used extraction scheme in medical facilities is the Radio Frequency Knock Out (RF-KO) driven resonant slow extraction, where the stored beam is transversely excited with a radio frequency (RF) field and the spill intensity is controlled by the excitation signal strength. This article presents particle dynamics simulations of the RF-KO system with the focus on finding effective mechanism for minimizing the intensity fluctuations while maintaining a good extraction efficiency and other advantages of KO extraction. An improved beam excitation signal which optimizes these main objectives is found, and is rigorously compared experimentally with other commonly applied techniques.
LB  - PUB:(DE-HGF)16
C6  - pmid:38705915
UR  - <Go to ISI:>//WOS:001214241900004
DO  - DOI:10.1038/s41598-024-60966-y
UR  - https://repository.gsi.de/record/350567
ER  -