WP17: TA12 – Trans-national Access to PSI-SLS and SwissFEL
Description of the infrastructure
The strategic emphasis of PSI is on materials research & particle physics, energy research, and life sciences, using its on-site facilities and with strong emphasis on international cooperation and user-lab function. As a member of the ETH-Domain of the Swiss federal government, PSI plays an important role in education at the PhD level. At PSI, users find three complementary probes at a single site:
- synchrotron X-rays (SLS & SwissFEL),
- neutrons (SINQ), and
- muons (SμS).
Swiss Light Source
The PSI-SLS has world-leading activities in structural biology, biomedical imaging, nanoscale magnetism, spectroscopy of correlated electron systems and ultrafast X-ray science. Internationally well recognised are also the extremely stable source and the development of hybrid pixel detectors (PILATUS) and diffractive X-ray optics.
In structural biology SLS puts emphasis on synchrotron beamlines and high-throughput protein production and crystallisation.
SLS facilities for X-ray imaging include high-throughput ultrafast tomography and phase differential contrast (DPC) imaging using grating interferometry. SLS has pioneered ptychographic lensless imaging. Small-angle X-ray scattering (SAXS) can be performed in millisecond time-resolved or in scanned imaging mode, thanks to use of PILATUS detectors. Condensed matter research largely focuses on properties of correlated electron systems (e.g., high-temperature superconductivity). High-resolution angle-resolved photoemission spectroscopy (ARPES) in the XUV photon energy range is possible using a six-axes sample manipulator for full band mapping down to 10 K. A unique facility for vector-spin-resolved ARPES is available for studies of, e.g., topological insulators. Resonant inelastic X-ray scattering (RIXS) at record-high energy resolution around the transition metal L-edges has led to various breakthroughs in our understanding of the correlated electronic properties of complex systems. Nanoscale magnetism is explored using soft X-ray dichroism at stations featuring a photoemission microscope or a sample environment with high magnetic field and low temperature. Recently a facility for combined photoelectron diffraction and STM studies started user operation.
A recently upgraded beamline for materials science is dedicated to (coherent) interface diffraction and time-resolved powder diffraction using a MYTHEN strip detector with fast read-out. A beamline for X-ray interference lithography enables the fabrication of periodic nanostructures with record-low pitch (< 10 nm) over large surface areas, attracting industrial applications.
Advanced tools for (time-resolved) spectroscopy and spectromicroscopy are needed for the monitoring and optimisation of chemical processes. Six beamlines, each featuring a different technique cover these needs.
The X-ray laser SwissFEL will produce very short pulses of X-ray light, with laser-like properties. Researchers will be able to use these pulses to visualise extremely fast processes, such as how new molecules are created in a chemical reaction; to determine the detailed structure of vital proteins; or to determine the relationship between electronic and atomic structure in materials. From such studies, researchers will gain insights, which will lead to many practical applications e.g. new pharmaceuticals, more efficient chemical and energy production processes, and new materials for electronics.
|Name of the infrastructure (and
its installations, if applicable)
|Swiss Light Source and Swiss Free Electron Laser|
|Location of the infrastructure||Villigen PSI, SWITZERLAND|
|Services currently offered by the infrastructure||Swiss Light Source: the total number of user hours per year is ca. 48,000. The PSI User Office organises ca. 3,500 SLS user visits per year from 20-25 countries. Groups from EU and associated countries use ca. 40% of the beamtime.
SwissFEL: from the second half of 2017 on SwissFEL will offer a total number of 5000 user hours per year. In the first phase the facility has the ARAMIS hard X-ray beamline (λ=0.1-0.7 nm) with two experimental stations namely:
Modality of access & application procedure
|Modality of access||PSI-SLS & SwissFEL is Co-leader in “WP2-NA1- User tools for access and data management” with a strong focus on dissemination of the federated identity management platform Umbrella and linked data management tools, and creation of a Data Management Plan (DMP) as well as the networking activities among the European user offices, respectively. In a concerted action among the facilities a software solution for implementation of the Standardized Proposal Format (SPF) should become available within the CALIPSOplus project.|
More information about the Trans-national Access funding by PSI-SLS you will find here.
|Outreach to new users||Beamline data sheets are also available on wayforlight.eu. Find more information here: infrastructure PSI-SLS@wayforlight.eu and PSI-SLS firstname.lastname@example.org.
|Review procedure||Proposals are selected solely on the basis of scientific merit, independent of nationality of the user . The proposals are evaluated by international Proposal Review Committees (PRC) of approx. 50 internationally renowned experts.
The applied criteria for evaluating scientific merit are homogeneous among partner facilities. Among the positively evaluated proposals those with a score ≥4 (scale: 1-5 with 5 excellent) are foreseen for travel cost and subsistence reimbursement. Within this selection priority will be given to EU proposers with affiliation in a country without synchrotron facility.
After evaluation, the proposal authors are informed via the Digital User Offices (DUO) and then contacted by the instrument scientists to fix the dates for the experiment.