LENS Operating Experience

Rinckel, T.; Baxter, David V.; Doskow, J.; Kaiser, H.; Pynn, R.; Sokol, P. E.; Todd, T.N.

doi:10.1016/j.phpro.2012.03.021

Cited by 10 publications

(22 citation statements)

References 2 publications

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“…Since most of the protons stop in a very narrow layer close to the Bragg peak, the amount of gas accumulated could destroy the plate after a few weeks of operation. This effect has been already reported from other installations such as LENS where a reduction of the target thickness was adopted as solution [19]. For a 9 mm thick plate, the hydrogen implantation comes to be about 170 appm after one year of operation (i.e.…”

Section: Beryllium Elementssupporting

confidence: 69%

Conceptual design of the beryllium rotating target for the ESS-Bilbao facility

Terrón

Sordo

Magán

et al. 2013

Nuclear Instruments and Methods in Physics Research Section A:

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The ESS-Bilbao facility, hosted by the University of the Basque Country (UPV/EHU), envisages the operation of a high-current proton accelerator delivering beams with energies up to 50 MeV. The timeaveraged proton current will be 2.25 mA, delivered by 1.5 ms proton pulses with a repetition rate of 20 Hz. This beam will feed a neutron source based upon the Be (p,n) reaction, which will enable the provision of relevant neutron experimentation capabilities. The neutron source baseline concept consists in a rotating beryllium target cooled by water. The target structure will comprise a rotatable disk made of 6061-T6 aluminium alloy holding 20 beryllium plates. Heat dissipation from the target relies upon a distribution of coolant-flow channels. The practical implementation of such a concept is here described with emphasis put on the beryllium plates thermo-mechanical optimization, the chosen coolant distribution system as well as the mechanical behavior of the assembly.

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Section: Beryllium Elementssupporting

confidence: 69%

Conceptual design of the beryllium rotating target for the ESS-Bilbao facility

Terrón

Sordo

Magán

et al. 2013

Nuclear Instruments and Methods in Physics Research Section A:

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“…Thus, our previous efforts (at The Weizmann Institute of Science (WIS) and at SARAF-I) and current (at SARAF-I) focus on improvement of the production and transport scheme, and measurement of nuclear physics observables pertaining to the decay. Meaningful experiments, mainly measuring the  correlation in the -decay of 6 He and 23 Ne, can be conducted with the energies and currents available at SARAF-I+ (Table 5).…”

Section: Precision Measurements Of Standard Model Parametersmentioning

confidence: 99%

“…The first unstable Ne isotope investigated at SARAF is 23 Ne, as it is the most reachable, requiring neutrons of only a few MeV impinging upon a Na target ( Table 9).…”

Section: Production Of 23 Nementioning

confidence: 99%

The Soreq Applied Research Accelerator Facility (SARAF): Overview, research programs and future plans

Mardor¹,

Aviv²,

Avrigeanu³

et al. 2018

Eur. Phys. J. A

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The Soreq Applied Research Accelerator Facility (SARAF) is under construction in the Soreq Nuclear Research Center at Yavne, Israel. When completed at the beginning of the next decade, SARAF will be a user facility for basic and applied nuclear physics, based on a 40 MeV, 5 mA CW proton/deuteron superconducting linear accelerator. Phase I of SARAF (SARAF-I, 4 MeV, 2mA CW protons, 5 MeV 1mA CW deuterons) is already in operation, generating scientific results in several fields of interest. The main ongoing program at SARAF-I is the production of 30 keV neutrons and measurement of Maxwellian Averaged Cross Sections (MACS), important for the astrophysical s-process. The world leading Maxwellian epithermal neutron yield at SARAF-I (5×10 10 epithermal neutrons/sec), generated by a novel Liquid-Lithium Target (LiLiT), enables improved precision of known MACSs, and new measurements of lowabundance and radioactive isotopes. Research plans for SARAF-II span several disciplines: Precision studies of beyond-Standard-Model effects by trapping light exotic radioisotopes, such as 6 He, 8 Li and 18,19,23 Ne, in unprecedented amounts (including meaningful studies already at SARAF-I); extended nuclear astrophysics research with higher energy neutrons, including generation and studies of exotic neutron-rich isotopes relevant to the rapid (r-) process; nuclear structure of exotic isotopes; high energy neutron cross sections for basic nuclear physics and material science research, including neutron induced radiation damage; neutron based imaging and therapy; and novel radiopharmaceuticals development and production.

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“…This avoids hydrogen build-up in the converter, which has proven to be a major problem at similar facilities [13]. At the same time it reduces the requirements for heat removal, since a part of the proton energy is deposited in the cooling water.…”

Section: Heat Dissipationmentioning

confidence: 99%

A neutron source for IGISOL-JYFLTRAP: Design and characterisation

et al. 2017

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Abstract.A white neutron source based on the Be(p, nx) reaction for fission studies at the IGISOL-JYFLTRAP facility has been designed and tested. 30 MeV protons impinge on a 5 mm thick water-cooled beryllium disc. The source was designed to produce at least 10 12 fast neutrons/s on a secondary fission target, in order to reach competitive production rates of fission products far from the valley of stability. The Monte Carlo codes MCNPX and FLUKA were used in the design phase to simulate the neutron energy spectra. Two experiments to characterise the neutron field were performed: the first was carried out at The Svedberg Laboratory in Uppsala (SE), using an Extended-Range Bonner Sphere Spectrometer and a liquid scintillator which used the time-of-flight (TOF) method to determine the energy of the neutrons; the second employed Thin-Film Breakdown Counters for the measurement of the TOF, and activation foils, at the IGISOL facility in Jyväskylä (FI). Design considerations and the results of the two characterisation measurements are presented, providing benchmarks for the simulations.

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LENS Operating Experience

Cited by 10 publications

References 2 publications

Conceptual design of the beryllium rotating target for the ESS-Bilbao facility

Conceptual design of the beryllium rotating target for the ESS-Bilbao facility

The Soreq Applied Research Accelerator Facility (SARAF): Overview, research programs and future plans

A neutron source for IGISOL-JYFLTRAP: Design and characterisation

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