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Article

Study of the Extracted Beam Energy as a Function of Operational Parameters of a Medical Cyclotron

by
Philipp Häffner
1,*,
Carolina Belver Aguilar
1,
Saverio Braccini
1,
Paola Scampoli
1,2 and
Pierre Alexandre Thonet
3
1
Albert Einstein Center for Fundamental Physics (AEC), Laboratory of High Energy Physics (LHEP), University of Bern, Sidlerstrasse 5, 3012 Bern, Switzerland
2
Department of Physics “Ettore Pancini”, University of Napoli Federico II, Complesso Universitario di Monte S. Angelo, 80126 Napoli, Italy
3
CERN, 1211 Geneva, Switzerland
*
Author to whom correspondence should be addressed.
Instruments 2019, 3(4), 63; https://doi.org/10.3390/instruments3040063
Submission received: 5 November 2019 / Revised: 2 December 2019 / Accepted: 3 December 2019 / Published: 5 December 2019
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Abstract

The medical cyclotron at the Bern University Hospital (Inselspital) is used for both routine 18 F production for Positron Emission Tomography (PET) and multidisciplinary research. It provides proton beams of variable intensity at a nominal fixed energy of 18 MeV. Several scientific activities, such as the measurement of nuclear reaction cross-sections or the production of non-conventional radioisotopes for medical applications, require a precise knowledge of the energy of the beam extracted from the accelerator. For this purpose, a study of the beam energy was performed as a function of cyclotron operational parameters, such as the magnetic field in the dipole magnet or the position of the extraction foil. The beam energy was measured at the end of the 6 m long Beam Transfer Line (BTL) by deflecting the accelerated protons by means of a dipole electromagnet and by assessing the deflection angle with a beam profile detector.
Keywords: beam energy; main coil current; stripper angle; resonance regime; extraction foil beam energy; main coil current; stripper angle; resonance regime; extraction foil

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MDPI and ACS Style

Häffner, P.; Belver Aguilar, C.; Braccini, S.; Scampoli, P.; Thonet, P.A. Study of the Extracted Beam Energy as a Function of Operational Parameters of a Medical Cyclotron. Instruments 2019, 3, 63. https://doi.org/10.3390/instruments3040063

AMA Style

Häffner P, Belver Aguilar C, Braccini S, Scampoli P, Thonet PA. Study of the Extracted Beam Energy as a Function of Operational Parameters of a Medical Cyclotron. Instruments. 2019; 3(4):63. https://doi.org/10.3390/instruments3040063

Chicago/Turabian Style

Häffner, Philipp, Carolina Belver Aguilar, Saverio Braccini, Paola Scampoli, and Pierre Alexandre Thonet. 2019. "Study of the Extracted Beam Energy as a Function of Operational Parameters of a Medical Cyclotron" Instruments 3, no. 4: 63. https://doi.org/10.3390/instruments3040063

APA Style

Häffner, P., Belver Aguilar, C., Braccini, S., Scampoli, P., & Thonet, P. A. (2019). Study of the Extracted Beam Energy as a Function of Operational Parameters of a Medical Cyclotron. Instruments, 3(4), 63. https://doi.org/10.3390/instruments3040063

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