The TRIUMF UltraCold Advanced Neutron Source

Martin, J. W.; Franke, B.; Hatanaka, K.; Kawasaki, S.; Picker, R.

doi:10.1080/10619127.2021.1881367

Cited by 9 publications

(4 citation statements)

References 9 publications

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“…The UCN sources can be used to implement the extensive research program for the physics of fundamental interactions. Today, there are 9 science centers in the world, which plan creating the experimental plants based on the UCN [8][9][10]12,[14][15][16][17][18]. The accuracy of these experiments is determined by the UCN density in the experimental traps.…”

Section: Research Program On the New Ucn Sourcementioning

confidence: 99%

Superfluid helium based ultracold neutron source for the PIK reactor

et al. 2022

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The PIK reactor at NRC "Kurchatov Institute"-PNPI is going to be equipped with a high-flux Ultra Cold Neutron (UCN) source for fundamental physics researches. The UCN source will use superfluid helium, which will make possible to achieve the density of UCN 2.2·10^3 cm-3, that has not yet been achieved anywhere in the world. The UCN source will be installed on the GEK-4 channel, which will make possible to obtain a low value of heat influx to cryogenic vessels from reactor radiation. The heat removal from the UCN source vessel will be implemented by using a heat exchanger. The calculated UCN density in the EDM spectrometer chamber at the PIK is going to be 200 cm-3, which is 20 times higher than the existing UCN densities in the world. For a new UCN source based on superfluid helium, an extensive research program has been developed in field of the physics of fundamental interactions, including the search for a nonzero neutron EDM, precision measurement of the neutron lifetime, and search for mirror dark matter. Keywords: ultracold neutrons, neutron sources, superfluid helium, neutron EDM, neutron decay.

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Section: Research Program On the New Ucn Sourcementioning

confidence: 99%

Superfluid helium based ultracold neutron source for the PIK reactor

et al. 2022

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“…To reach the statistical accuracy goal for the experiment a new ultra-cold neutron (UCN) source is being developed at TRIUMF that will be capable of providing the required UCN densities [2]. Figure 2 shows the layout of the source that is under development at TRIUMF.…”

Section: New Ucn Source and Experimentsmentioning

confidence: 99%

The TUCAN Neutron Electric Dipole Moment Experiment

McCrea¹

2022

Proceedings of Particles and Nuclei International Conference 2021 — PoS(PANIC2021)

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The goal of the TRIUMF Ultra-Cold Advanced Neutron (TUCAN) Collaboration is to successfully make a new measurement of the neutron electric dipole moment (nEDM) with an uncertainty of 1 × 10 −27 e-cm in 400 days of run time, a one order of magnitude improvement compared to the current world's best result. The experiment is unique in using a spallation-driven superfluid helium (He-II) source of ultracold neutrons (UCN). We are now at the stage of upgrading the UCN source to produce world-leading UCN densities, using a new He-II cryostat that has undergone cryogenic testing at KEK in 2020-21. We are also assembling the experimental components of the EDM experiment, including a magnetically shielded room, coils, and atomic magnetometers.

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“…Precision experiments with ultra-cold neutrons [37,63], such as the search for a possible electric dipole moment (EDM) of the neutron [1,46,54] or the measurement of the lifetime τ n of the free neutron [6,16,25,45,47,52,56], require high UCN densities. Stronger UCN sources are presently developed worldwide, based on the principle of superthermal UCN production, using cryo-converters made of solid deuterium (sD 2 ) or superfluid helium [4,10,18,23,24,[30][31][32]34,35,38,39,48,57,58,72,73]. At the FRM II a UCN source with a sD 2 converter and sH 2 premoderator, placed in a distance of ∼60 cm from the central fuel element inside the horizontal, through-going beam tube SR6, is currently under construction.…”

Section: Introductionmentioning

confidence: 99%

The source for ultra-cold neutrons at the FRM II

Frei

2023

JNR

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At the Forschungs-Neutronenquelle Heinz Maier-Leibnitz (FRM II) of the Technical University of Munich (TUM) a new source for ultra-cold neutrons (UCN) with a solid deuterium converter is currently under construction. This summary paper shall give an overview of the project and its current status. Research results concerning converter preparation, para-to-ortho conversion, radiation effects and neutron transport, which have been achieved in the last years, are presented and their relevance and transferability for the design of a future UCN source at the European Spallation Source (ESS) are discussed.

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The TRIUMF UltraCold Advanced Neutron Source

Cited by 9 publications

References 9 publications

Superfluid helium based ultracold neutron source for the PIK reactor

Superfluid helium based ultracold neutron source for the PIK reactor

The TUCAN Neutron Electric Dipole Moment Experiment

The source for ultra-cold neutrons at the FRM II

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