HIAT2022 - List of Keywords (dipole)

Paper	Title	Other Keywords	Page
TUP04	New Method for Overcoming Dipole Effects of 4-Rod RFQs	rfq, impedance, ECR, simulation	72
	S. Wunderlich, C. Zhang GSI, Darmstadt, Germany
	A new design of a 4-rod RFQ has been developed and simulated. In contrast to conventional designs, it uses asymmetrical stem geometry in the vertical-longitudinal plane. The effect on dipole fields for different geometrical parameters were examined and will be discussed.
	Poster TUP04 [0.300 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-HIAT2022-TUP04
About •	Received ※ 21 June 2022 — Revised ※ 19 July 2022 — Accepted ※ 10 August 2022 — Issue date ※ 19 September 2022
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUP08	RF Chopper for Prebunched Radioactive Ion Beams	cavity, cryomodule, simulation, rfq	87
	A.J. Gonzalez, A.S. Plastun FRIB, East Lansing, Michigan, USA
	An RF chopper system is being designed for the Re-Accelerator (ReA) linac at the Facility for Rare Isotope Beams (FRIB) at Michigan State University (MSU). The chopper system is designed to clean out satellite bunches and produce a 16.1 MHz bunch structure, which allows for time-of-flight separation of the isotopes. The chopper system’s location in the beamline is between the ReA3 and ReA6 cryomodules. In ReA, the beam can be prebunched at the frequency of 16.1 MHz and accelerated in a 80.5 MHz RFQ, producing four satellite bunches for every one high-intensity bunch. The chopper system includes an RF deflector operating at 64.4 MHz, which is the beat frequency of 80.5 MHz and 16.1 MHz. The deflector deflects every bunch to spatially separate high-intensity and satellite bunches. The beam trajectory is biased by a constant magnetic field to ensure the high-intensity bunches do not experience any total deflection. The kicked bunches are low in intensity and will be sent to a beam dump, resulting in a clean 16.1 MHz beam structure injected into the ReA6 cryomodule.
	Poster TUP08 [0.437 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-HIAT2022-TUP08
About •	Received ※ 20 June 2022 — Revised ※ 30 June 2022 — Accepted ※ 10 August 2022 — Issue date ※ 19 September 2022
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Other Keywords

Page

TUP04

New Method for Overcoming Dipole Effects of 4-Rod RFQs

rfq, impedance, ECR, simulation

72

S. Wunderlich, C. Zhang
GSI, Darmstadt, Germany

A new design of a 4-rod RFQ has been developed and simulated. In contrast to conventional designs, it uses asymmetrical stem geometry in the vertical-longitudinal plane. The effect on dipole fields for different geometrical parameters were examined and will be discussed.

Poster TUP04 [0.300 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-HIAT2022-TUP04

About •

Received ※ 21 June 2022 — Revised ※ 19 July 2022 — Accepted ※ 10 August 2022 — Issue date ※ 19 September 2022

Cite •

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

TUP08

RF Chopper for Prebunched Radioactive Ion Beams

cavity, cryomodule, simulation, rfq

87

A.J. Gonzalez, A.S. Plastun
FRIB, East Lansing, Michigan, USA

An RF chopper system is being designed for the Re-Accelerator (ReA) linac at the Facility for Rare Isotope Beams (FRIB) at Michigan State University (MSU). The chopper system is designed to clean out satellite bunches and produce a 16.1 MHz bunch structure, which allows for time-of-flight separation of the isotopes. The chopper system’s location in the beamline is between the ReA3 and ReA6 cryomodules. In ReA, the beam can be prebunched at the frequency of 16.1 MHz and accelerated in a 80.5 MHz RFQ, producing four satellite bunches for every one high-intensity bunch. The chopper system includes an RF deflector operating at 64.4 MHz, which is the beat frequency of 80.5 MHz and 16.1 MHz. The deflector deflects every bunch to spatially separate high-intensity and satellite bunches. The beam trajectory is biased by a constant magnetic field to ensure the high-intensity bunches do not experience any total deflection. The kicked bunches are low in intensity and will be sent to a beam dump, resulting in a clean 16.1 MHz beam structure injected into the ReA6 cryomodule.

Poster TUP08 [0.437 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-HIAT2022-TUP08

About •

Received ※ 20 June 2022 — Revised ※ 30 June 2022 — Accepted ※ 10 August 2022 — Issue date ※ 19 September 2022

Cite •

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