Name: Second Workshop on UCN and VCN Sources at ESS
Start: 2023-05-09T09:00:00+02:00
End: 2023-05-10T18:00:00+02:00
Location: No location set

Second Workshop on UCN and VCN Sources at ESS

from Tuesday, 9 May 2023 (09:00) to Wednesday, 10 May 2023 (18:00)

Monday, 8 May 2023
Tuesday, 9 May 2023
09:00 Welcome and ESS General Status - Helmut Schober (European Spallation Source)
Welcome and ESS General Status
- Helmut Schober (European Spallation Source)
09:00 - 09:20
Room: ESS auditorium
09:20 ESS Science Update - Giovanna Fragneto (European Spallation Source ERIC)
ESS Science Update
- Giovanna Fragneto (European Spallation Source ERIC)
09:20 - 09:45
Room: ESS auditorium
09:45 HighNESS project status - Valentina Santoro (European Spallation Source ERIC)
HighNESS project status
- Valentina Santoro (European Spallation Source ERIC)
09:45 - 10:10
Room: ESS auditorium
10:10 Introduction to the HighNESS UCN/VCN sources designs - Luca Zanini (European Spallation Source ERIC)
Introduction to the HighNESS UCN/VCN sources designs
- Luca Zanini (European Spallation Source ERIC)
10:10 - 10:35
Room: ESS auditorium
10:35 Coffee Break
Coffee Break
10:35 - 11:00
Room: ESS auditorium
11:00 UCN Source Solid Deuterium in the twister - Nicola Rizzi (Denmark Tekinske Universitet)
UCN Source Solid Deuterium in the twister
- Nicola Rizzi (Denmark Tekinske Universitet)
11:00 - 11:25
Room: ESS auditorium
11:25 UCN Source SD2 in moderator cooling block - Blahoslav Rataj (European Spallation Source ERIC)
UCN Source SD2 in moderator cooling block
- Blahoslav Rataj (European Spallation Source ERIC)
11:25 - 11:50
Room: ESS auditorium
11:50 Group photo
Group photo
11:50 - 12:00
Room: ESS auditorium

12:00 Lunch
Lunch
12:00 - 13:00
Room: ESS auditorium
13:00 UCN Source He-II in the moderator cooling block - Mathias Strothmann (Forschungszentrum Jülich GmbH)
UCN Source He-II in the moderator cooling block
- Mathias Strothmann (Forschungszentrum Jülich GmbH)
13:00 - 13:25
Room: ESS auditorium
13:25 UCN source He-II In Large Beam Port - Mina Akhyani (Lunds University (IBAN))
UCN source He-II In Large Beam Port
- Mina Akhyani (Lunds University (IBAN))
13:25 - 13:50
Room: ESS auditorium
13:50 UCN source He-II In beam - Richard Wagner (Institut Laue-Langevin - ILL)
UCN source He-II In beam
- Richard Wagner (Institut Laue-Langevin - ILL)
13:50 - 14:15
Room: ESS auditorium
14:15 VCN source - clathrates - Shuqi Xu
VCN source - clathrates
- Shuqi Xu
14:15 - 14:40
Room: ESS auditorium
14:40 VCN source in Twister-I - Nicola Rizzi (Denmark Tekinske Universitet)
VCN source in Twister-I
- Nicola Rizzi (Denmark Tekinske Universitet)
14:40 - 15:05
Room: ESS auditorium
15:05 Coffee Break
Coffee Break
15:05 - 15:35
Room: ESS auditorium
15:35 VCN source in Twister -II - Ben Folsom (European Spallation Source ERIC)
VCN source in Twister -II
- Ben Folsom (European Spallation Source ERIC)
15:35 - 16:00
Room: ESS auditorium
16:00 Diffraction-grating VCN interferometry and experimental search for neutron electric charge - Alexander Ioffe
Diffraction-grating VCN interferometry and experimental search for neutron electric charge
- Alexander Ioffe
16:00 - 16:30
Room: ESS auditorium
16:30 VCN interferometry: Some history and (near) future perspectives - Juergen Klepp
VCN interferometry: Some history and (near) future perspectives
- Juergen Klepp
16:30 - 17:00
Room: ESS auditorium
17:00 Opportunities with ultracold neutrons at the ESS - Skyler Degenkolb
Opportunities with ultracold neutrons at the ESS
- Skyler Degenkolb
17:00 - 17:30
Room: ESS auditorium
19:00 Working Dinner at Grands Restauranger i Lund
Working Dinner at Grands Restauranger i Lund
19:00 - 22:00
Wednesday, 10 May 2023
09:00 The TRIUMF Ultra Cold Advanced Neutron source and nEDM experiment - Alexis Brossard
The TRIUMF Ultra Cold Advanced Neutron source and nEDM experiment
- Alexis Brossard
09:00 - 09:30
Room: ESS auditorium The TRIUMF UltraCold Advanced Neutron (TUCAN) collaboration aims for the measurement of the neutron electric dipole moment (nEDM) with a one order of magnitude improvement of the current best limit. Ultra-cold neutrons (UCNs) suits for such experiment as they can be trapped and stored for several minutes. The collaboration works toward the completion of a new high-intensity UCN source. UCN are produced by a neutron spallation target driven by TRIUMF’s proton cyclotron and a combination of heavy water, liquid deuterium moderator and super-fluid 4He converter. This production scheme has been successfully demonstrated by a prototype UCN source operated from 2017-2019 at TRIUMF. With our newly upgraded source, a statistical nEDM sensitivity of 10−27 e⋅cm would be achieved in 400 days of data taking. The source will also deliver UCNs to a second port that will be open to proposals from users worldwide. This presentation will present an overview of the UCNs source and nEDM experiment installation at TRIUMF.
09:30 New scattering kernels for solid deuterium and superfluid He4 - Rolando Granada (Argentine Atomic Energy Commission)
New scattering kernels for solid deuterium and superfluid He4
- Rolando Granada (Argentine Atomic Energy Commission)
09:30 - 10:00
Room: ESS auditorium
10:00 UCN extraction from Solid Deuterium Moderator - Ingo Rienaecker
UCN extraction from Solid Deuterium Moderator
- Ingo Rienaecker
10:00 - 10:30
Room: ESS auditorium
10:30 Coffee break
Coffee break
10:30 - 10:55
Room: ESS auditorium
10:55 Countering gravity in a VCN SANS instrument - Mads Bertelsen (ESS DMSC)
Countering gravity in a VCN SANS instrument
- Mads Bertelsen (ESS DMSC)
10:55 - 11:10
Room: ESS auditorium
11:10 Feasibility of a strong focusing synchrotron for neutron beams - Shyh-Yuan Lee
Feasibility of a strong focusing synchrotron for neutron beams
- Shyh-Yuan Lee
11:10 - 11:30
Room: ESS auditorium We study the feasibility of storing cold neutron beams in a strong focusing synchrotron. We also propose an alternating-current (AC) dipole magnet to be used as a neutron acceleration device, and a pulsed quadrupole as a neutron beam kicker for injection and extraction. The AC acceleration device can provide adiabatic capture, acceleration or deceleration of neutron beams. It seems feasible to design a high quality neutron synchrotron for many future neutron beam applications, such as neutron life time measurements, “monoenergetic” neutron scattering experiments, pencil neutron beam applications, etc.
11:30 Discussion on UCN/VCN source
Discussion on UCN/VCN source
11:30 - 12:15
Room: ESS auditorium
12:15 Discussion on a next call and close out - Valentina Santoro (European Spallation Source ERIC)
Discussion on a next call and close out
- Valentina Santoro (European Spallation Source ERIC)
12:15 - 12:30
Room: ESS auditorium
12:30 Lunch
Lunch
12:30 - 13:30
Room: ESS auditorium

13:30 Site Visit
Site Visit
13:30 - 16:00
Room: ESS auditorium