Experimental validation of the field and beam dynamics simulations for a superconducting cyclotron
Seminars
Scientific DLNP seminar on charged particles accelerators problems
Date and Time: Thursday, 31 October 2019, at 11:00 AM
Venue: Conference Hall, building 108, Dzhelepov Laboratory of Nuclear Problems
Seminar topic: «Experimental validation of the field and beam dynamics simulations for a superconducting cyclotron»
Authors: V. L. Smirnov1, S. B. Vorozhtsov1, X. Wu2, D. Alt2, G. Blosser2, G. Horner2, J. Paquette2, N. Usher2, J. Vincent2, Z. Neville3
1 – Joint institute for Nuclear Research, Dubna, Russia
2 – Inonetix Corporation, USA
3 – Disher Corporation, USA
Speaker: V. L. Smirnov
Abstract:
The Ion-12SC is a subcompact, 12,5 MeV proton super-conducting isochronous cyclotron for commercial medical isotope production recently developed at Ionetix Corporation. During the initial machine operating periods, some issues appeared. In particular, imperfections in manufacturing and assembly of the magnet introduced unwanted low order magnetic harmonics that resulted in beam losses. This report presents results of analysis of the measured magnetic field and beam dynamics in the cyclotron that were initiated to solve the problem. The calculations led to a process for implementing compensating magnetic shims to improve the beam transmission.
The analysis above was performed by using 3D multi-particles tracing code. Application of the approach to some cyclotrons in comparison to the measurements is also discussed in the report.