Cyclotrons2016 - List of Keywords (impedance)

Paper	Title	Other Keywords	Page
MODM03	Equivalent Circuit Model of Cyclotron RF System	cyclotron, resonance, cavity, simulation	39
	M. Mohamadian, H. Afarideh, S. Sabounchi, M. Salehi AUT, Tehran, Iran M. Ghergherehchi SKKU, Suwon, Republic of Korea
	Cyclotron cavity modeled via electromagnetic circuits in the desired frequency. The design performed according to resonator basis and also cyclotron acceleration requirements with ADS software and compared to simulations made by the CST microwave studio. The scattering parameters obtained for main resonators of the cyclotron and Dee parts as a diaphragm for each of cavity sections and also for the whole structure. All the characteristics modeled and calculated by the electromagnetic rules and theory of resonators from circuit model. Then it analysed with numerical methods for bench-marking. Finally, it shows that the circuit model able to modeled accurately the cyclotron cavity and especially it can estimate precisely the structure parameters without any time consuming numerical method simulations.
	Poster MODM03 [1.475 MB]
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WEB02	Hybrid Configuration, Solid State-Tube, Revamps an Obsolete Tube Amplifier for the INFB K-800 Superconducting Cyclotron	cyclotron, operation, cathode, network	263
	A.C. Caruso, F. Caruso, A. Longhitano, A. Spartà INFN/LNS, Catania, Italy G. Primadei CERN, Geneva, Switzerland J. Sura Warsaw University, Warsaw, Poland
	An insertion of a solid state amplifier is substituting the obsolete first stage of a full tube RF power amplifier. The amplifier is based on two tube stages. The first, equipped by a tetrode, the RS1054, was being manufactured by Thales until a couple of years ago. Some spare parts have been ordered but not enough to guarantee smooth cyclotron operation for the next few years. It was necessary to come up with a new solution. We were basically at a crossroad: replace the first stage with another tube still in production or change the technology from tube to solid state. A study, from market research to the technology point of view was carried out and the final decision was to use a solid state stage as an innovative solution for this kind of power vs frequency range of operation. The prototype of this hybrid amplifier has been in operation with our cyclotron since January 2015. The details of these decisions, the description of the modified amplifier (solid state – tube) and the successful results of this hybrid configuration will be shown in this presentation.
	Slides WEB02 [3.178 MB]
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WEB03	Design and Simulation of Cavity for 18 MeV Cyclotron	cavity, coupling, cyclotron, simulation	267
	M. Mousavinia, H. Afarideh AUT, Tehran, Iran M. Ghergherehchi SKKU, Suwon, Republic of Korea
	RF system is the key part of cyclotron and cavity is the key part of RF system. The basic parameters of cavity design are the resonant frequency , dee voltage , RF phase and RF power. Proper operation of cavity depends on the suitable voltage distribution in accelerating gap, phase stability in cavity and as well as optimal scattering parameters. In this simulation by using CST MWS, different parts of cavity such as stam and dee are optimized to achieved optimum dimesnsions for desired resonant freq, dee voltage and RF power. Properties of designed cavity including: resonant frequency at 64.3 MHz, dee voltage is 45 kV and RF power is 11 kW.
	Slides WEB03 [3.767 MB]
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Paper

Title

Other Keywords

Page

MODM03

Equivalent Circuit Model of Cyclotron RF System

cyclotron, resonance, cavity, simulation

39

M. Mohamadian, H. Afarideh, S. Sabounchi, M. Salehi
AUT, Tehran, Iran
M. Ghergherehchi
SKKU, Suwon, Republic of Korea

Cyclotron cavity modeled via electromagnetic circuits in the desired frequency. The design performed according to resonator basis and also cyclotron acceleration requirements with ADS software and compared to simulations made by the CST microwave studio. The scattering parameters obtained for main resonators of the cyclotron and Dee parts as a diaphragm for each of cavity sections and also for the whole structure. All the characteristics modeled and calculated by the electromagnetic rules and theory of resonators from circuit model. Then it analysed with numerical methods for bench-marking. Finally, it shows that the circuit model able to modeled accurately the cyclotron cavity and especially it can estimate precisely the structure parameters without any time consuming numerical method simulations.

Poster MODM03 [1.475 MB]

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEB02

Hybrid Configuration, Solid State-Tube, Revamps an Obsolete Tube Amplifier for the INFB K-800 Superconducting Cyclotron

cyclotron, operation, cathode, network

263

A.C. Caruso, F. Caruso, A. Longhitano, A. Spartà
INFN/LNS, Catania, Italy
G. Primadei
CERN, Geneva, Switzerland
J. Sura
Warsaw University, Warsaw, Poland

An insertion of a solid state amplifier is substituting the obsolete first stage of a full tube RF power amplifier. The amplifier is based on two tube stages. The first, equipped by a tetrode, the RS1054, was being manufactured by Thales until a couple of years ago. Some spare parts have been ordered but not enough to guarantee smooth cyclotron operation for the next few years. It was necessary to come up with a new solution. We were basically at a crossroad: replace the first stage with another tube still in production or change the technology from tube to solid state. A study, from market research to the technology point of view was carried out and the final decision was to use a solid state stage as an innovative solution for this kind of power vs frequency range of operation. The prototype of this hybrid amplifier has been in operation with our cyclotron since January 2015. The details of these decisions, the description of the modified amplifier (solid state – tube) and the successful results of this hybrid configuration will be shown in this presentation.

Slides WEB02 [3.178 MB]

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEB03

Design and Simulation of Cavity for 18 MeV Cyclotron

cavity, coupling, cyclotron, simulation

267

M. Mousavinia, H. Afarideh
AUT, Tehran, Iran
M. Ghergherehchi
SKKU, Suwon, Republic of Korea

RF system is the key part of cyclotron and cavity is the key part of RF system. The basic parameters of cavity design are the resonant frequency , dee voltage , RF phase and RF power. Proper operation of cavity depends on the suitable voltage distribution in accelerating gap, phase stability in cavity and as well as optimal scattering parameters. In this simulation by using CST MWS, different parts of cavity such as stam and dee are optimized to achieved optimum dimesnsions for desired resonant freq, dee voltage and RF power. Properties of designed cavity including: resonant frequency at 64.3 MHz, dee voltage is 45 kV and RF power is 11 kW.

Slides WEB03 [3.767 MB]

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)