RuPAC2021 - List of Keywords (Windows)

Paper	Title	Other Keywords	Page
MOPSA03	Calculations of Ion Dynamics and Elecrodynamics Characteristics of 800 KeV/nucleon RFQ	emittance, cavity, rfq, coupling	135
	M.A. Guzov, A.M. Opekunov, L.E. Polyakov, N.V. Zavyalov RFNC-VNIIEF, Sarov, Nizhniy Novgorod region, Russia M.A. Guzov, E.N. Indiushnii, Y. Lozeev, A.I. Makarov, S.M. Polozov MEPhI, Moscow, Russia M.L. Smetanin, A.V. Telnov VNIIEF, Sarov, Russia
	Accelerating structure with radio-frequency quadrupole focusing (RFQ) was observed in this research. The RFQ is aimed to bunch up, accelerate and focus 1 MeV/nucleon ions with A/Z from 1 to 3.2 (A - mass number of ion, Z - ion charge). The chemical elements from H⁺ to O5+ fill up this particle types range. The protons current is 2 mA and ion current is 1 mA. In this paper charged particle dynamics calculations, which essential for next electrodynamic cavity modeling, were performed. The electrodynamic model of 4-vane RFQ cavity with windows of magnetic connection was created. The dependence between frequency and cavity geometrics was defined. Topology of magnetic windows, which aimed to have the maximum mod separations, was determined. Different types of tanks were considered and corresponding electromagnetic characteristics were calculated. Tuning elements (plungers and spacers) influence on cavity was modeled. As a result optimized model of accelerating structure was realized.
DOI •	reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-MOPSA03
About •	Received ※ 20 September 2021 — Revised ※ 29 September 2021 — Accepted ※ 07 October 2021 — Issued ※ 18 October 2021
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

MOPSA04	The Tuning of RF Parameters of 40 MHz RFQ	rfq, linac, coupling, cavity	139
	A. Sitnikov, G. Kropachev, T. Kulevoy, D.N. Selesnev, A.I. Semennikov ITEP, Moscow, Russia
	The new linac for A/Z = 8, output energy 4 MeV/u and 10 mA current is under development at NRC "Kurchatov Institute" - ITEP. The linac consists of Radio-Frequency Quadrupole (RFQ) and two sections of Drift Tube Linac (DTL). The 40 MHz 11 meters long RFQ is based on a 4-vane structure with magnetic coupling windows. The paper presents results of tuning radio-frequency (RF) RFQ parameters.
	Poster MOPSA04 [1.243 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-MOPSA04
About •	Received ※ 24 September 2021 — Revised ※ 25 September 2021 — Accepted ※ 07 October 2021 — Issued ※ 16 October 2021
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEPSC01	Unit for Matching a Driving Waveguide With a Cavity	cavity, GUI, ECR, coupling	340
	V.V. Paramonov RAS/INR, Moscow, Russia
	To match the driving waveguide, usually operating in the fundamental TE10 wave, with the accelerating structure, a device is required that performs the function of a wave-type transformer. In the microwave region, transforming devices with matching windows are usually used, the field distribution in which can also be described as TE-type. At the ends of the window from the side of the structure, regions with an increased density of Surface Currents (SC) inevitably arise, leading to an increase in the surface temperature in a place that is difficult to access for cooling. There are various solutions for matching windows, in order to reduce the maximum SC from the side of the structure , briefly mentioned in the report. A solution based on the dispersion properties of the waveguide and providing a significant additional decrease in the SC density is considered. This solution can be implemented in devices for S and lower frequency ranges.
DOI •	reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-WEPSC01
About •	Received ※ 06 September 2021 — Revised ※ 20 September 2021 — Accepted ※ 24 September 2021 — Issued ※ 22 October 2021
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Other Keywords

Page

MOPSA03

Calculations of Ion Dynamics and Elecrodynamics Characteristics of 800 KeV/nucleon RFQ

emittance, cavity, rfq, coupling

135

M.A. Guzov, A.M. Opekunov, L.E. Polyakov, N.V. Zavyalov
RFNC-VNIIEF, Sarov, Nizhniy Novgorod region, Russia
M.A. Guzov, E.N. Indiushnii, Y. Lozeev, A.I. Makarov, S.M. Polozov
MEPhI, Moscow, Russia
M.L. Smetanin, A.V. Telnov
VNIIEF, Sarov, Russia

Accelerating structure with radio-frequency quadrupole focusing (RFQ) was observed in this research. The RFQ is aimed to bunch up, accelerate and focus 1 MeV/nucleon ions with A/Z from 1 to 3.2 (A - mass number of ion, Z - ion charge). The chemical elements from H⁺ to O5+ fill up this particle types range. The protons current is 2 mA and ion current is 1 mA. In this paper charged particle dynamics calculations, which essential for next electrodynamic cavity modeling, were performed. The electrodynamic model of 4-vane RFQ cavity with windows of magnetic connection was created. The dependence between frequency and cavity geometrics was defined. Topology of magnetic windows, which aimed to have the maximum mod separations, was determined. Different types of tanks were considered and corresponding electromagnetic characteristics were calculated. Tuning elements (plungers and spacers) influence on cavity was modeled. As a result optimized model of accelerating structure was realized.

DOI •

reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-MOPSA03

About •

Received ※ 20 September 2021 — Revised ※ 29 September 2021 — Accepted ※ 07 October 2021 — Issued ※ 18 October 2021

Cite •

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

MOPSA04

The Tuning of RF Parameters of 40 MHz RFQ

rfq, linac, coupling, cavity

139

A. Sitnikov, G. Kropachev, T. Kulevoy, D.N. Selesnev, A.I. Semennikov
ITEP, Moscow, Russia

The new linac for A/Z = 8, output energy 4 MeV/u and 10 mA current is under development at NRC "Kurchatov Institute" - ITEP. The linac consists of Radio-Frequency Quadrupole (RFQ) and two sections of Drift Tube Linac (DTL). The 40 MHz 11 meters long RFQ is based on a 4-vane structure with magnetic coupling windows. The paper presents results of tuning radio-frequency (RF) RFQ parameters.

Poster MOPSA04 [1.243 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-MOPSA04

About •

Received ※ 24 September 2021 — Revised ※ 25 September 2021 — Accepted ※ 07 October 2021 — Issued ※ 16 October 2021

Cite •

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

WEPSC01

Unit for Matching a Driving Waveguide With a Cavity

cavity, GUI, ECR, coupling

340

V.V. Paramonov
RAS/INR, Moscow, Russia

To match the driving waveguide, usually operating in the fundamental TE10 wave, with the accelerating structure, a device is required that performs the function of a wave-type transformer. In the microwave region, transforming devices with matching windows are usually used, the field distribution in which can also be described as TE-type. At the ends of the window from the side of the structure, regions with an increased density of Surface Currents (SC) inevitably arise, leading to an increase in the surface temperature in a place that is difficult to access for cooling. There are various solutions for matching windows, in order to reduce the maximum SC from the side of the structure , briefly mentioned in the report. A solution based on the dispersion properties of the waveguide and providing a significant additional decrease in the SC density is considered. This solution can be implemented in devices for S and lower frequency ranges.

DOI •

reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-WEPSC01

About •

Received ※ 06 September 2021 — Revised ※ 20 September 2021 — Accepted ※ 24 September 2021 — Issued ※ 22 October 2021

Cite •

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