A 6He production facility and an electrostatic trap for measurement of the beta–neutrino correlation

I. Mukul; M. Hass; O. Heber; T. Y. Hirsh; Y. Mishnayot; M. L. Rappaport; G. Ron; Y. Shachar; S. Vaintraub

doi:10.1016/j.nima.2018.05.017

A ⁶He production facility and an electrostatic trap for measurement of the beta–neutrino correlation

I. Mukul^*, M. Hass, O. Heber, T. Y. Hirsh, Y. Mishnayot, M. L. Rappaport, G. Ron, Y. Shachar, S. Vaintraub

^*Corresponding author for this work

Racah Institute of Physics

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

6 Scopus citations

Abstract

A novel experiment has been commissioned at the Weizmann Institute of Science for the study of weak interactions via a high-precision measurement of the beta–neutrinoangular correlation in the radioactive decay of short-lived ⁶He. The facility consists of a 14 MeV d+t neutron generator to produce atomic ⁶He, followed by ionization and bunching in an electron beam ion source, and injection into an electrostatic ion beam trap. This ion trap has been designed for efficient detection of the decay products from trapped light ions. The storage time in the trap for different stable ions was found to be in the range of 0.6 to 1.2 s at the chamber pressure of ∼7 × 10⁻¹⁰ mbar. We present the initial test results of the facility, and also demonstrate an important upgrade of an existing method (Stora et al., 2012) for production of light radioactive atoms, viz. ⁶He, for the precision measurement. The production rate of ⁶He atoms in the present setup has been estimated to be ∼1.45×10⁻⁴ atoms per neutron, and the system efficiency was found to be 4.0 ± 0.6%. An improvement to this setup is also presented for the enhanced production and diffusion of radioactive atoms for future use.

Original language	American English
Pages (from-to)	16-21
Number of pages	6
Journal	Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume	899
DOIs	https://doi.org/10.1016/j.nima.2018.05.017
State	Published - 11 Aug 2018

Bibliographical note

Funding Information:
The authors would like to acknowledge the support from the Israel Science Foundation (ISF) grant 139/15 , the European Research Council (ERC) grant 714118 , the PAZY Foundation and the IAEC cooperation fund .

Publisher Copyright:
© 2018 Elsevier B.V.

Keywords

Electron beam ion source
Electrostatic ion beam trap
GEANT4
He radioactive atom
Scintillator

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10.1016/j.nima.2018.05.017

Cite this

Mukul, I., Hass, M., Heber, O., Hirsh, T. Y., Mishnayot, Y., Rappaport, M. L., Ron, G., Shachar, Y., & Vaintraub, S. (2018). A ⁶He production facility and an electrostatic trap for measurement of the beta–neutrino correlation. Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 899, 16-21. https://doi.org/10.1016/j.nima.2018.05.017

@article{afdcdb2cb9b94589a78cfeee0c4fec4a,

title = "A 6He production facility and an electrostatic trap for measurement of the beta–neutrino correlation",

abstract = "A novel experiment has been commissioned at the Weizmann Institute of Science for the study of weak interactions via a high-precision measurement of the beta–neutrinoangular correlation in the radioactive decay of short-lived 6He. The facility consists of a 14 MeV d+t neutron generator to produce atomic 6He, followed by ionization and bunching in an electron beam ion source, and injection into an electrostatic ion beam trap. This ion trap has been designed for efficient detection of the decay products from trapped light ions. The storage time in the trap for different stable ions was found to be in the range of 0.6 to 1.2 s at the chamber pressure of ∼7 × 10−10 mbar. We present the initial test results of the facility, and also demonstrate an important upgrade of an existing method (Stora et al., 2012) for production of light radioactive atoms, viz. 6He, for the precision measurement. The production rate of 6He atoms in the present setup has been estimated to be ∼1.45×10−4 atoms per neutron, and the system efficiency was found to be 4.0 ± 0.6%. An improvement to this setup is also presented for the enhanced production and diffusion of radioactive atoms for future use.",

keywords = "Electron beam ion source, Electrostatic ion beam trap, GEANT4, He radioactive atom, Scintillator",

author = "I. Mukul and M. Hass and O. Heber and Hirsh, {T. Y.} and Y. Mishnayot and Rappaport, {M. L.} and G. Ron and Y. Shachar and S. Vaintraub",

note = "Funding Information: The authors would like to acknowledge the support from the Israel Science Foundation (ISF) grant 139/15 , the European Research Council (ERC) grant 714118 , the PAZY Foundation and the IAEC cooperation fund . Publisher Copyright: {\textcopyright} 2018 Elsevier B.V.",

year = "2018",

month = aug,

day = "11",

doi = "10.1016/j.nima.2018.05.017",

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Mukul, I, Hass, M, Heber, O, Hirsh, TY, Mishnayot, Y, Rappaport, ML, Ron, G, Shachar, Y & Vaintraub, S 2018, 'A ⁶He production facility and an electrostatic trap for measurement of the beta–neutrino correlation', Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, vol. 899, pp. 16-21. https://doi.org/10.1016/j.nima.2018.05.017

A ⁶He production facility and an electrostatic trap for measurement of the beta–neutrino correlation. / Mukul, I.; Hass, M.; Heber, O. et al.
In: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 899, 11.08.2018, p. 16-21.

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

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T1 - A 6He production facility and an electrostatic trap for measurement of the beta–neutrino correlation

AU - Mukul, I.

AU - Hass, M.

AU - Heber, O.

AU - Hirsh, T. Y.

AU - Mishnayot, Y.

AU - Rappaport, M. L.

AU - Ron, G.

AU - Shachar, Y.

AU - Vaintraub, S.

N1 - Funding Information: The authors would like to acknowledge the support from the Israel Science Foundation (ISF) grant 139/15 , the European Research Council (ERC) grant 714118 , the PAZY Foundation and the IAEC cooperation fund . Publisher Copyright: © 2018 Elsevier B.V.

PY - 2018/8/11

Y1 - 2018/8/11

N2 - A novel experiment has been commissioned at the Weizmann Institute of Science for the study of weak interactions via a high-precision measurement of the beta–neutrinoangular correlation in the radioactive decay of short-lived 6He. The facility consists of a 14 MeV d+t neutron generator to produce atomic 6He, followed by ionization and bunching in an electron beam ion source, and injection into an electrostatic ion beam trap. This ion trap has been designed for efficient detection of the decay products from trapped light ions. The storage time in the trap for different stable ions was found to be in the range of 0.6 to 1.2 s at the chamber pressure of ∼7 × 10−10 mbar. We present the initial test results of the facility, and also demonstrate an important upgrade of an existing method (Stora et al., 2012) for production of light radioactive atoms, viz. 6He, for the precision measurement. The production rate of 6He atoms in the present setup has been estimated to be ∼1.45×10−4 atoms per neutron, and the system efficiency was found to be 4.0 ± 0.6%. An improvement to this setup is also presented for the enhanced production and diffusion of radioactive atoms for future use.

AB - A novel experiment has been commissioned at the Weizmann Institute of Science for the study of weak interactions via a high-precision measurement of the beta–neutrinoangular correlation in the radioactive decay of short-lived 6He. The facility consists of a 14 MeV d+t neutron generator to produce atomic 6He, followed by ionization and bunching in an electron beam ion source, and injection into an electrostatic ion beam trap. This ion trap has been designed for efficient detection of the decay products from trapped light ions. The storage time in the trap for different stable ions was found to be in the range of 0.6 to 1.2 s at the chamber pressure of ∼7 × 10−10 mbar. We present the initial test results of the facility, and also demonstrate an important upgrade of an existing method (Stora et al., 2012) for production of light radioactive atoms, viz. 6He, for the precision measurement. The production rate of 6He atoms in the present setup has been estimated to be ∼1.45×10−4 atoms per neutron, and the system efficiency was found to be 4.0 ± 0.6%. An improvement to this setup is also presented for the enhanced production and diffusion of radioactive atoms for future use.

KW - Electron beam ion source

KW - Electrostatic ion beam trap

KW - GEANT4

KW - He radioactive atom

KW - Scintillator

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DO - 10.1016/j.nima.2018.05.017

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