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

Mukul, Ish; Hass, M.; Heber, O.; Hirsh, T.; Mishnayot, Y.; Rappaport, Michael; Ron, G.; Shachar, Y.; Vaintraub, S.

doi:10.1016/j.nima.2018.05.017

Cited by 8 publications

(6 citation statements)

References 20 publications

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“…Observing table II, and provided that systematics and theoretical corrections are under control [6], the detection of 10 6 recoil ions from 23 Ne decay already improves on the state of the art. Nevertheless, to be competitive with ongoing and planned campaigns involving pure GT branches [31,32,[82][83][84][85], roughly 10 7 events are desired. 18 Ne decays mainly to the ground state of 18 F through a pure GT transition, and to an excited state by a superallowed Fermi transition.…”

Section: Opportunities With Neon Isotopesmentioning

confidence: 99%

Decay microscope for trapped neon isotopes

et al. 2020

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We review the design, simulation, and tests, of a detection system for measuring the energy distribution of daughter nuclei recoiling from the beta-decay of laser trapped neon isotopes. This distribution is sensitive to several new physics effects in the weak sector. Our 'decay microscope' relies on imaging the velocity distribution of high energy recoil ions in coincidence with electrons shaken-off in the decay. We demonstrate by way of Monte-Carlo simulation, that the nuclear microscope increases the statistical sensitivity of kinematic measurements to the underlying energy distribution, and limits the main systematic bias caused by discrepancy in the trap position along the detection axis.

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Section: Opportunities With Neon Isotopesmentioning

confidence: 99%

Decay microscope for trapped neon isotopes

et al. 2020

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“…As mentioned earlier, a competitive measurement requires acquisition of a few 10 7 decay events within the trap [29], and so for a reasonable beam time of under 100h, The average event rate should be at least 100/s. For a production rate of 10 9 isotopes of choice per second, the overall efficiency of transport, trapping and detection should be at least 10 −7 , which is easily obtained in the EIBT setup [19], and is regularly obtained in a state of the art, laser-cooling system for metastables [10]. At the present, a meaningful measurement can be accomplished at SARAF-I with the production capabilities shown in fig.…”

Section: Studies At Sarafmentioning

confidence: 99%

“…2.1 6 He production and trapping in EIBT 6 He decays directly to the ground state of 6 Li + by β − emission, with a Q-value of 3.50521 ± 0.00005 MeV, and a half life of 806.9 ± 0.1 ms [16]. Our first radioactive atom production experiment for 6 He was performed at the target room of the now-decommissioned Koffler Pelletron Accelerator at the Weizmann Institute of Science and is described in [19]. We found a production probability of 1.45×10 −4 6 He/neutron, and the total system efficiency (which includes transport and decay during measurement) of nearly 4%.…”

Section: Studies At Sarafmentioning

confidence: 99%

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Weak interaction studies at SARAF

et al. 2018

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We review the current status of the radioisotopes program at the Soreq Applied Research Accelerator Facility (SARAF), where we utilize an electrostatic-ion-beam trap and a magneto-optical trap for studying the nuclear β -decay from trapped radioactive atoms and ions. The differential energy spectra of β 's and recoil ions emerging from the decay is sensitive to beyond standard model interactions and is complementary to high energy searches. The completed facility SARAF-II will be one of the world's most powerful deuteron, proton and fast neutron sources, producing light radioactive isotopes in unprecedented amounts, needed for obtaining enough statistics for a high precision measurement.

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“…In 2018, we began operating the trapping laboratory at the Soreq Applied Research Accelerator Facility (SARAF) [10,11]. Two dedicated trap systems were commissioned to measure β decay parameters: an Electrostatic Ion Beam Trap (EIBT) for 6 He [12,13], and a Magneto-Optical Trap (MOT) for neon isotopes [14,15]. Since both systems involve short-lived isotopes (<1 min), they have to be coupled to an accelerator-based radioisotope production and transport apparatus.…”

Section: Introductionmentioning

confidence: 99%

$^{23}$Ne Production at SARAF-I

Mishnayot,

Rahangdale,

Ohayon

et al. 2020

Preprint

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In this article, we present a measurement of flow rate, yield and effusion time of a 23 Ne production and transport system. We used an accelerator-driven Li(d,n) neutron source to produce neutrons up to 20 MeV. The radioactive atoms were produced by a 23 Na(n,p) reaction at a NaCl target. Later, the atoms were diffused out from the NaCl crystals and effused from the production chamber via a 10 m hose to a measurement cell and their decay products were detected using high purity germanium (HPGe) and plastic scintillator detectors. The resulting flow rate was 6.9 ± 0.5 • 10 4atoms /sec and the total yield was 3.2 ± 0.4 • 10 −9atoms /deuteron. We summarize our methods and estimates of efficiencies, rates of production and effusion.

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

Cited by 8 publications

References 20 publications

Decay microscope for trapped neon isotopes

Decay microscope for trapped neon isotopes

Weak interaction studies at SARAF

$^{23}$Ne Production at SARAF-I

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