Würzburg 2018 – wissenschaftliches Programm
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AKBP: Arbeitskreis Beschleunigerphysik
AKBP 10: New Accelerator Concepts and Radiofrequency
AKBP 10.5: Vortrag
Donnerstag, 22. März 2018, 17:30–17:45, NW-Bau - HS2
RF Design of an RFQ Linac for PIXE Analysis — •Hermann Pommerenke1,2, Alexej Grudiev1, and Ursula van Rienen2 — 1CERN, Geneva, Switzerland — 2University of Rostock, Germany
MeV protons are commonly used for Ion Beam Analysis (IBA) of materials, in particular with the PIXE (Proton Induced X-ray Emission) technique, which is the most widely used in IBA. PIXE covers the quantitative analysis of elements with very good efficiency and minimum detection limits reaching ppm range. Because of its non-damaging character, it is widely used in different fields, in particular for the diagnosis of cultural heritage artwork.
Despite many benefits, moving masterpieces from museum to IBA laboratories can be expensive, unacceptable for curators or simply impossible due to the size or the conservation stage. A transportable accelerator is a unique tool capable of providing access to IBA analysis almost anywhere, in museums, restoration centers or even in the field. Additional applications include environmental and atmospheric sciences, material sciences, and quality control.
This PhD project covers the RF design of a compact transportable radio frequency quadrupole (RFQ) operating at 750 MHz, which will serve as a source of 2 MeV protons for PIXE analysis. The RFQ will be constructed at CERN in close collaboration with Le Louvre (AGLAE laboratory) and INFN-Firenze (LABEC laboratory).
Here, we present general project parameters and the current state of the RF design, which includes results regarding the RFQ geometry, required fabrication tolerances and thermal simulation.