Contribution to a conference proceedings

GSI-2025-00521

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Analysis of losses and protection of the electrostatic septum anode wires in SIS18

Ondreka, D.GSI* ; Spiller, P.GSI* ; Gålnander, B. (Corresponding author)GSI* ; Petryk, M.GSI*

2023
JACoW Publishing Geneva, Switzerland

Please use a persistent id in citations: doi:10.18429/JACOW-IPAC2023-TUPM098  doi:10.15120/GSI-2025-00521

Abstract: The synchrotron SIS18 at GSI uses resonant extraction for slow beam extraction. Recently it was discovered that about 50% of the anode wires of the electrostatic extraction septum were broken during beam operation. In this paper, we present the analysis of the possible loss scenario that led to the anode wire damage and suggest machine protection measures to prevent future damage. The investigations revealed the importance of having access to stored data representing machine parameter settings and their changes as well as signals from devices and beam instrumentation to be able to analyse the events leading to losses. Relevant signals include beam current, beam loss monitor signals, and vacuum pressure. Systems for logging and archiving such data are under development for FAIR, but are not yet routinely available.

Keyword(s): Accelerator Physics ; mc4-hadron-accelerators - MC4: Hadron Accelerators ; mc4-t12-beam-injection-extraction-and-transport - MC4.T12: Beam Injection/Extraction and Transport

Note: Published by JACoW Publishing under the terms of the Creative Commons Attribution 4.0 license.

---

Contributing Institute(s):

1. System Design SIS 100 / SIS 18 (SYS)

Research Program(s):

1. 899 - ohne Topic (POF4-899) (POF4-899)

Experiment(s):

1. no experiment theory work (theory)

Appears in the scientific report 2023

---

Database coverage:
;

---