Call for Proposals

• 01 September - 23 December 2025 (II-25)
• 01 June - 30 September 2026 (I-26)
• 01 October - 23 December 2026 (II-26)

Please note:

• As a new feature we will accept long term proposals for main proposers with Swiss affiliation (except PSI) for a duration of two cycles (I-26 and II-26)
• The instruments POLDI and BOA will not be available in the cycles I- and II-26 because of dedicated upgrade programs
• The new small angle scattering facility SANS-LLB that has been installed in collaboration with our French partners from LLB as well as the instrument NEUTRA after its upgrade program will both take some friendly users in 2026. If you intend to submit a proposal for one of the two instruments it is expected to contact the respective instrument team first.
• The Neutron Microscope is an experimental setup that can be used on the instruments POLDI, ICON and BOA (if those are available, see above). If you intend to use the microscope setup, please submit your proposal for the main instrument (e.g. ICON) and choose the option "Neutron Microscope" during the proposal submission procedure. Please discuss the choice of the instrument well ahead with the person in charge for the microscope.
• Finally, beamtime on the instrument MORPHEUS can be allocated by contacting the instrument responsible directly.

In the past, PSI launched also a call for joint X-ray and neutron proposals (SLS/MS-Powder beamline and SINQ/HRPT) in the field of powder diffraction, which is presently suspended because of the SLS 2.0 upgrade and the following IMPACT program. More information can be obtained here.