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Course on Unfolding of Bonner Sphere Spectrometer Neutron Measurements

All information
07/03/2022 - 10/03/2022

Paul Scherrer Institut
Education Center: OSGA/EG06
Forschungsstrasse 111
5232 Villigen PSI



Bonner sphere spectrometers (BSS) are widely used for measuring the spectral neutron distribution. The BSS can determine neutron spectra over a wide energy range covering up to 12 orders of magnitude and it has been used for the measurement of neutron spectra at many different types of facilities, such as reactors, accelerators, and medical facilities. The analysis of the measured data, however, requires unfolding methods, which have to be used carefully to obtain reliable results.

The EURADOS Training Course provides an introduction to unfolding for BSS with practical applications. The emphasis is on unfolding exercises using different measurement scenarios. The course is intended for those who do spectrometry in neutron or mixed neutron/photon fields and need to analyse their data using unfolding procedures.

The course is a four-day training course on neutron spectra unfolding measured with Bonner sphere spectrometers (BSS), organised by the department of radiation safety and security of the Paul Scherrer Institut (PSI) in collaboration with the neutron radiation department of the Physikalisch-Technische Bundesanstalt (PTB) and EURADOS.

The course will take place at the PSI Campus with a maximum of 20 participants.  Depending on the current pandemic situation, a change to an online training course may be possible – a hybrid event is not being planned.


This course is organised as part of EURADOS, the main part of it is carried out by Marcel Reginatto (PTB), Eike Hohmann (PSI) and Veronique Lacoste (IRSN) with additional contributions from members of EURADOS WG11.

Scientific Programme Committee

Marcel Reginatto (PTB)
Eike Hohmann (PSI)
Véronique Lacoste (IRSN)
Benjamin Lutz (PTB)
Marco Caresano (POLIMI)
Vladimir Mares (HHZM)
Veronika Olšovcová (ELI)

Local Organizing Committee
Eike Hohmann (PSI)
Claudia Nydegger (PSI)

Registration info

Registration Fee
The participation fee for the course, including coffee is 650 Euro.
For EURADOS Sponsors a 10 % discount will be offered. The participation fee for sponsors is 585 Euro.

For registration, please fill in and submit our registration form.

Deadline of registration: 15 February 2022
Deadline for payments: 25 February 2022

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