First measurement of a 2.5 MeV RFQ output emittance with 1 part-per-million dynamic range

A. Aleksandrov; S. Cousineau; K. Ruisard; A. Zhukov

doi:10.1016/j.nima.2020.164829

First measurement of a 2.5 MeV RFQ output emittance with 1 part-per-million dynamic range

A. Aleksandrov, S. Cousineau, K. Ruisard, A. Zhukov

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

Accurate characterization and prediction of beam halo has been historically prohibited by an inability to measure beam phase distributions with the required sensitivity level. To address this limitation, a system for measuring transverse beam emittance with very high dynamic range is developed at the Spallation Neutron Source Beam Test Facility. An emittance of a 20 mA H- beam is measured at the 2.5 MeV RFQ exit with the dynamic range larger than 1-part-per-million for the first time. Though no obvious halo is observed within this dynamic range for this particular configuration, the measurement demonstrates a capability to resolve beam distributions at the level required for inspection and characterization of beam halo.

Original language	English
Article number	164829
Journal	Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume	987
DOIs	https://doi.org/10.1016/j.nima.2020.164829
State	Published - Jan 21 2021
Externally published	Yes

Funding

This manuscript has been authored by UT-Battelle, LLC, under contract DE-AC05-00OR22725 with the US Department of Energy (DOE) . The US government retains and the publisher, by accepting the article for publication, acknowledges that the US government retains a nonexclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this manuscript, or allow others to do so, for US government purposes. DOE will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan ( http://energy.gov/downloads/doe-public-access-plan ). This manuscript has been authored by UT-Battelle, LLC, under contract DE-AC05-00OR22725 with the US Department of Energy (DOE). The US government retains and the publisher, by accepting the article for publication, acknowledges that the US government retains a nonexclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this manuscript, or allow others to do so, for US government purposes. DOE will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan (http://energy.gov/downloads/doe-public-access-plan).

Funders	Funder number
DOE Public Access Plan
US Department of Energy
U.S. Department of Energy

Keywords

Beam diagnostics
Beam halo
Hadron linac
High dynamic range

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10.1016/j.nima.2020.164829

Cite this

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title = "First measurement of a 2.5 MeV RFQ output emittance with 1 part-per-million dynamic range",

abstract = "Accurate characterization and prediction of beam halo has been historically prohibited by an inability to measure beam phase distributions with the required sensitivity level. To address this limitation, a system for measuring transverse beam emittance with very high dynamic range is developed at the Spallation Neutron Source Beam Test Facility. An emittance of a 20 mA H- beam is measured at the 2.5 MeV RFQ exit with the dynamic range larger than 1-part-per-million for the first time. Though no obvious halo is observed within this dynamic range for this particular configuration, the measurement demonstrates a capability to resolve beam distributions at the level required for inspection and characterization of beam halo.",

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author = "A. Aleksandrov and S. Cousineau and K. Ruisard and A. Zhukov",

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First measurement of a 2.5 MeV RFQ output emittance with 1 part-per-million dynamic range. / Aleksandrov, A.; Cousineau, S.; Ruisard, K. et al.
In: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 987, 164829, 21.01.2021.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - First measurement of a 2.5 MeV RFQ output emittance with 1 part-per-million dynamic range

AU - Aleksandrov, A.

AU - Cousineau, S.

AU - Ruisard, K.

AU - Zhukov, A.

PY - 2021/1/21

Y1 - 2021/1/21

N2 - Accurate characterization and prediction of beam halo has been historically prohibited by an inability to measure beam phase distributions with the required sensitivity level. To address this limitation, a system for measuring transverse beam emittance with very high dynamic range is developed at the Spallation Neutron Source Beam Test Facility. An emittance of a 20 mA H- beam is measured at the 2.5 MeV RFQ exit with the dynamic range larger than 1-part-per-million for the first time. Though no obvious halo is observed within this dynamic range for this particular configuration, the measurement demonstrates a capability to resolve beam distributions at the level required for inspection and characterization of beam halo.

AB - Accurate characterization and prediction of beam halo has been historically prohibited by an inability to measure beam phase distributions with the required sensitivity level. To address this limitation, a system for measuring transverse beam emittance with very high dynamic range is developed at the Spallation Neutron Source Beam Test Facility. An emittance of a 20 mA H- beam is measured at the 2.5 MeV RFQ exit with the dynamic range larger than 1-part-per-million for the first time. Though no obvious halo is observed within this dynamic range for this particular configuration, the measurement demonstrates a capability to resolve beam distributions at the level required for inspection and characterization of beam halo.

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KW - High dynamic range

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ER -

First measurement of a 2.5 MeV RFQ output emittance with 1 part-per-million dynamic range

Abstract

Funding

Keywords

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