Development of a Neutron Imaging Station at the n_TOF Facility of CERN and Applications to Beam Intercepting Devices

Mingrone, F.; Calviani, M.; Martin, C.; Aberle, O.; Bacak, M.; Chiaveri, E.; Fornasiere, Elvis; Perillo‐Marcone, Antonio; Vlachoudis, V.

doi:10.3390/instruments3020032

Cited by 3 publications

(7 citation statements)

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“…Various samples have been inspected at n_TOF EAR2 using neutron imaging [8], and the experimental results are summarized in the following using a subset of the most significant measurements performed. In particular two samples related to R&D activities at CERN for the design of a new Antiproton Decelerator production Target (AD Target) [9] have been inspected:…”

Section: Resultsmentioning

confidence: 99%

“…Figure 1 shows the beam lines and their elements. Recently, the second experimental area (EAR2) [7] has been exploited as a neutron imaging facility [8]. The collimation system in EAR2 consists of a first collimator, a sweeping magnet, a so-called filter box and a second collimator.…”

Section: The N_tof Facilitymentioning

confidence: 99%

“…Beam line setup for the imaging measurements (left) and picture of the imaging setup (right), taken from[8].…”

mentioning

confidence: 99%

“…Comparison between the small (top) and big (bottom) collimator using a dummy AD target, taken from[8].…”

mentioning

confidence: 99%

“…Image of the irradiated AD target. The inner iridium core (black) shows damage visible as non-uniformities at the edges, taken from[8].…”

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confidence: 99%

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Neutron imaging at the n_TOF facility of CERN

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Section: Resultsmentioning

confidence: 99%

Section: The N_tof Facilitymentioning

confidence: 99%

“…Beam line setup for the imaging measurements (left) and picture of the imaging setup (right), taken from[8].…”

mentioning

confidence: 99%

“…Comparison between the small (top) and big (bottom) collimator using a dummy AD target, taken from[8].…”

mentioning

confidence: 99%

“…Image of the irradiated AD target. The inner iridium core (black) shows damage visible as non-uniformities at the edges, taken from[8].…”

mentioning

confidence: 99%

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Neutron imaging at the n_TOF facility of CERN

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Status and perspectives of the neutron time-of-flight facility n_TOF at CERN

et al. 2020

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Since the start of its operation in 2001, based on an idea of Prof. Carlo Rubbia [1], the neutron time of-flight facility of CERN, n_TOF, has become one of the most forefront neutron facilities in the world for wide-energy spectrum neutron cross section measurements. Thanks to the combination of excellent neutron energy resolution and high instantaneous neutron flux available in the two experimental areas, the second of which has been constructed in 2014, n_TOF is providing a wealth of new data on neutron-induced reactions of interest for nuclear astrophysics, advanced nuclear technologies and medical applications. The unique features of the facility will continue to be exploited in the future, to perform challenging new measurements addressing the still open issues and long-standing quests in the field of neutron physics. In this document the main characteristics of the n_TOF facility and their relevance for neutron studies in the different areas of research will be outlined, addressing the possible future contribution of n_TOF in the fields of nuclear astrophysics, nuclear technologies and medical applications. In addition, the future perspectives of the facility will be described including the upgrade of the spallation target, the setup of an imaging installation and the construction of a new irradiation area.

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Design of the third-generation neutron spallation target for the CERN’s n_TOF facility

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Calviani

2020

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The neutron Time-Of-Flight (n_TOF) facility at the European Laboratory for Particle Physics (CERN) is a pulsed white-spectrum neutron spallation source producing neutrons for two experimental areas: EAR1, located 185 m downstream of the spallation target, and EAR2, located 20 m above the target. The facility is based on a lead target impacted by a high-intensity 20 GeV/c proton beam. It is designed to study neutron-nucleus interactions for neutron kinetic energies from a few meV to several GeV, with applications in nuclear astrophysics, nuclear technology, and medical research. The facility is undergoing a major upgrade in 2019–2020, which will include the installation of the new third-generation target. The second-generation target consists in a water-cooled lead cylinder, while the new target will be cooled by nitrogen to avoid erosion-corrosion phenomena and contamination of the cooling water with radioactive lead spallation products. The new design will be optimized also for the vertical flight path. The operation of the new spallation target will start in 2021. This paper presents an overview on the evolution of the design and on the related R&D activities (including beam irradiation tests) carried out to ensure the best performance for both experimental areas and avoid the contamination issues of the previous targets.

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Development of a Neutron Imaging Station at the n_TOF Facility of CERN and Applications to Beam Intercepting Devices

Cited by 3 publications

References 14 publications

Neutron imaging at the n_TOF facility of CERN

Neutron imaging at the n_TOF facility of CERN

Status and perspectives of the neutron time-of-flight facility n_TOF at CERN

Design of the third-generation neutron spallation target for the CERN’s n_TOF facility

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