CERN Accelerating science

Internal Note and Article
Report number	CERN-ACC-NOTE-2023-0008 ; NIMMS-Note-014
Title	Alvarez drift tube linac for medical applications in the framework of HITRIplus project
Author(s)	Mamaras, Aristeidis (Aristotle U., Thessaloniki ; CERN) ; Samponidis, D (Aristotle U., Thessaloniki ; CERN) ; Bellan, L (INFN-LNL, Legnaro, Italy) ; Bisoffi, Giovanni (Universita e INFN, Legnaro (IT)) ; Comunian, M (INFN-LNL, Leganro, Italy) ; Thonet, Pierre Alexandre (CERN) ; Vretenar, Maurizio (CERN)
Corporate Author(s)	CERN. Geneva. ATS Department
Publication	2023
Imprint	30 Jun 2023
Number of pages	6
Note	This study was partially supported by the European Union H2020 research and innovation programme under GA 101008548 (HITRIplus).
In:	JACoW IPAC2023 (2023) TUPA176
In:	14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.TUPA176
DOI	10.18429/JACoW-IPAC2023-TUPA176
Subject category	Accelerators and Storage Rings
Study	CERN NIMMS
Abstract	A first beam dynamics and RF design of an Alvarez-type drift tube linac (DTL) has been defined in the framework of the EU project, HITRIplus. It is meant primarily as a carbon (12C4+) and helium (4He2+) ion injector of a compact synchrotron for patient treatment. As a second implemen-tation, helium particle acceleration with a higher duty cycle (10%) enables radioisotope production. The 352.2 MHz structure efficiently accelerates ion species with A/q=3 and 2, in the energy range from 1 to 5 MeV/u and for a beam current up to  0.5 mA. The design extends to a full length of  6.4 meters. Permanent magnet quadrupoles are utilized all along the DTL for focusing both ion beams. This paper presents a first-phase analysis towards a realistic DTL de-sign capable of providing full beam transmission and min-imum overall emittance increase for both A/q values.

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