Project

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Erneuerung des ETH Tandem Beschleunigers

English title Upgrade of the ETH Tandem accelerator
Applicant Synal Hans-Arno
Number 128735
Funding scheme R'EQUIP
Research institution Labor für Ionenstrahlphysik ETH Zürich
Institution of higher education ETH Zurich - ETHZ
Main discipline Nuclear Physics
Start/End 01.03.2010 - 31.12.2011
Approved amount 105'400.00
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Keywords (5)

Accelerator Mass Spectrometry; Ion Beam Analysis; Tandem accelerator; Long-lived radionuclides; Exposure dating

Lay Summary (English)

Lead
Lay summary
The project deals with the upgrade of the 6 MV EN tandem accelerator of the ETH Laboratory of Ion Beam Physics. Since its installation in the 1960s the accelerator allowed state-of-the-art measurements in Accelerator Mass Spectrometry and Ion Beam Analysis. However, spare parts for the currently used belt charging system are not available any more. The proposed upgrade to a Pelletron charging system guarantees an operation of the tandem accelerator for the future. In addition, the gas stripper at the terminal will be redesigned with improved gas recirculation and larger apertures, the column resistors will be adopted to the new charging current and the insulation gas cooling system will be exchanged. The new charging system should result in improved terminal voltage stability; together with a better ion optical transmission the tandem accelerator will allow more precise measurements, in particular of radionuclides with isobaric interferences (e.g. 32Si, 36Cl), which are inaccessible to the low-energy AMS systems at the laboratory.
Direct link to Lay Summary Last update: 21.02.2013

Responsible applicant and co-applicants

Publications

Publication
Radiochemical determination of 129I and 36Cl in MEGAPIE, a proton irradiated lead-bismuth eutectic spallation target
Bernadette Hammer-Rotzler Jörg Neuhausen Christof Vockenhuber Viktor Boutellier Michael Wohlmuth (2015), Radiochemical determination of 129I and 36Cl in MEGAPIE, a proton irradiated lead-bismuth eutectic spallation target, in Radiochimica Acta, 103(11), 745-758.
Surface layer evolution caused by the bombardment with ionized metal vapor
M. Döbeli A. Dommann X. Maeder A. Neels D. Passerone H. Rudigier D. Scopece B. Widrig J. Rammd (2014), Surface layer evolution caused by the bombardment with ionized metal vapor, in Nuclear Instruments and Methods in Physics Research B, 332, 337-340.
Energy-loss straggling of 2−10 MeV/u Kr ions in gases
Christof Vockenhuber Jens Jensen Jaakko Julin Heikki Kettunen Mikko Laitinen Mikko Rossi Timo (2013), Energy-loss straggling of 2−10 MeV/u Kr ions in gases, in THE EUROPEAN PHYSICAL JOURNAL D, 67(145), 1-9.
In-air STIM with a capillary microprobe
M.J. Simon M. Döbel A.M. Müller H.-A. Synal (2012), In-air STIM with a capillary microprobe, in Nuclear Instruments and Methods in Physics Research B, 273, 237 -240.
Performance parameters and standard reference materials at the ETH AMS facilities.
M. Christl* C. Vockenhuber L. Wacker P.W. Kubik H.-A. Synal V. Alfimov T. Schulze-König, Performance parameters and standard reference materials at the ETH AMS facilities., in Nuclear Instruments and Methods B.

Collaboration

Group / person Country
Types of collaboration
National Electrostatics Corporation United States of America (North America)
- Exchange of personnel
- Industry/business/other use-inspired collaboration

Associated projects

Number Title Start Funding scheme
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117642 Thin oxide films by PLD: "Tracing" the oxygen and understanding its role 01.01.2008 Project funding (Div. I-III)
109565 Constructing a temporal framework for landscape dynamics in the eastern Swiss Alps during the Lateglacial and early Holocene 01.04.2006 Project funding (Div. I-III)
113746 Orogenic growth in the atlas mountains of SW Marocco - Insights from low-temperature thermochronometry and in situ cosmogenic dating 01.10.2006 Project funding (Div. I-III)
121902 New Developments in Ion Beam Physics 01.11.2008 Project funding (Div. I-III)
128949 CoDustMas: Cosmic Dust Grains as a Diagnostic for Massive Stars 01.07.2010 Project funding (special)
177229 Towards implementing new isotopes for environmental research: The half-life of 32Si 01.09.2018 Sinergia
124981 The Swiss contribution to the Lake Van Drilling Project: 500000 years of environmental and climate change in Eastern Anatolia (Science Part) 01.01.2010 Project funding (Div. I-III)

Abstract

The project deals with the upgrade of the 6 MV EN tandem accelerator of the ETH Laboratory of Ion Beam Physics. Since its installation in the 1960s the accelerator allowed state-of-the-art measurements in Accelerator Mass Spectrometry and Ion Beam Analysis. However, spare parts for the currently used belt charging system are not available any more. The proposed upgrade to a Pelletron charging system guarantees an operation of the tandem accelerator for the future. In addition, the gas stripper at the terminal will be redesigned with improved gas recirculation and larger apertures, the column resistors will be adopted to the new charging current and the insulation gas cooling system will be exchanged. The new charging system should result in improved terminal voltage stability; together with a better ion optical transmission the tandem accelerator will allow more precise measurements, in particular of radionuclides with isobaric interferences (e.g. 32Si, 36Cl), which are inaccessible to the low-energy AMS systems at the laboratory.
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