Contribution to a conference proceedings/Contribution to a book

GSI-2025-00481

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png High Current Heavy Ion Beam Investigations at GSI-UNILAC

Vormann, H. (Corresponding author)GSI* ; Barth, W.GSI* ; Miski-Oglu, M.GSI* ; Scheeler, U.GSI* ; Vossberg, M.GSI* ; Yaramyshev, S.GSI* ; Zimmermann, F. (Editor) ; Tanaka, H. (Editor) ; Sudmuang, P. (Editor) ; Klysubun, P. (Editor) ; Sunwong, P. (Editor) ; Chanwattana, T. (Editor) ; Petit-Jean-Genaz, C. (Editor) ; Schaa, V. R. W. (Editor)

2022
JACoW Publishing Geneva, Switzerland

Please use a persistent id in citations: doi:10.18429/JACOW-IPAC2022-MOPOST012  doi:10.15120/GSI-2025-00481

Abstract: The GSI Universal Linear Accelerator UNILAC and the synchrotron SIS18 will serve as injector for the upcoming FAIR-facility. The UNILAC-High Current Injector will be improved and modernized until FAIR is commissioned and the Alvarez poststripper accelerator is replaced. The reference heavy ion for future FAIR-operation is uranium, with highest intensity requirements. To re-establish uranium beam operation and to improve high current beam operation, different subjects have been explored in dedicated machine investigation campaigns. After a beam line modification in 2017 the RFQ-performance had deteriorated significantly; new rods have been installed and the RF-working point has been redefined. Also the Superlens-performance had become unsatisfactory; improved with a modified RF-coupler. With a pulsed hydrogen gas stripper target the uranium beam stripping efficiency could be increased by 65%. Various work has already been carried out to establish this stripper device in routine operation. With medium heavy ion beams a very high beam brilliance at the end of transfer line to SIS18 was achieved. Results of the measurement campaigns and the UNILAC upgrade activities will be presented.

Keyword(s): Accelerator Physics ; MC4: Hadron Accelerators

Note: Published by JACoW Publishing under the terms of the Creative Commons Attribution 3.0 International license.

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Contributing Institute(s):

1. Linac (LIN)
2. Betrieb (OPE)

Research Program(s):

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

Experiment(s):

1. no experiment theory work (theory)

Appears in the scientific report 2022

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Database coverage:
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