Contribution to a conference proceedings

FZJ-2024-05129

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png First implementation of RF-KO slow extraction at COSY

Niedermayer, P. (Corresponding author)FZJ* ; Breitkreutz, B.FZJ* ; Hetzel, J.FZJ* ; Reimers, K.FZJ* ; Singh, R. ; Gebel, R.FZJ* ; Kamerdzhiev, V.FZJ*

2024
JACoW Publishing

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Please use a persistent id in citations: doi:10.18429/JACoW-IPAC2024-THPR34  doi:10.18429/JACOW-IPAC2024-THPR34

Abstract: Radio Frequency Knock Out (RF-KO) resonant slow extraction is commissioned at the Cooler Synchrotron (COSY) Jülich for the first time to extract the stored beam and deliver spills with constant particle rates to the experiments. Therefore, transverse RF excitation generated with a software-defined radio is applied to control the extraction rate. A built-in feedback system adjusts the excitation amplitude to maintain the desired extraction rate. To suppress fluctuations of the particle rate on timescales of milliseconds and below, an optimization algorithm is used to tune the RF excitation signals. The method was used extensively during the final run of COSY in 2023, reliably delivering stable beams to various users.

Keyword(s): Accelerator Physics ; mc4-hadron-accelerators - MC4: Hadron Accelerators ; MC4.T12 - MC4.T12 Beam Injection/Extraction and Transport

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Contributing Institute(s):

1. Kernphysikalische Großgeräte (IKP-4)

Research Program(s):

1. 621 - Accelerator Research and Development (POF4-621) (POF4-621)
2. Experimente an COSY (FUEK36) (FUEK36)
3. Betrieb und Weiterentwicklung von Experimentiereinrichtungen an COSY (FUEK34) (FUEK34)
4. Betrieb und Weiterenwicklung von COSY (FUEK33) (FUEK33)
5. Betrieb und Weiterentwicklung des Kühler-Synchrotrons COSY (FUEK244) (FUEK244)

Appears in the scientific report 2024

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