Skip to main content
  • DE
  • EN
  • FR
Paul Scherrer Institut (PSI) Paul Scherrer Institut (PSI)
Suche
Paul Scherrer Institut (PSI) Paul Scherrer Institut (PSI)

Hauptnavigation

  • Labs & User ServicesOpen mainmenu item
    • Overview
    • Research at PSI
    • Research Divisions and Labs
    • Facilities and Instruments
    • Research Initiatives
    • PSI User Labs
    • Scientific Highlights
    • Scientific Events
    • Scientific Career
    • Useroffice
  • VisitorsOpen mainmenu item
    • Overview
    • Contact
    • How to find us
    • Public Events
    • Visitor Centre psi forum
    • Schülerlabor iLab
    • Center for Proton Therapy
  • IndustryOpen mainmenu item
    • Overview
    • Technology Transfer
    • Spin-off Companies
    • PARK innovAARE
  • Our ResearchOpen mainmenu item
    • Current topics from our research
    • Matter and Material
    • Human Health
    • Energy and Environment
    • Large Research Facilities
    • Brochures
    • Films
    • Media Corner
  • Career & Further EducationOpen mainmenu item
    • Job Opportunities
    • Personnel Policy
    • Working at PSI
    • Equal Opportunities, Diversity & Inclusion
    • Training and Further Education
    • Vocational Training
    • PSI Education Centre
    • Support Program "PSI Career Return Program"
    • PSI-FELLOW/COFUND
  • About PSIOpen mainmenu item
    • PSI in brief
    • Strategy
    • Guiding principles
    • Facts and figures
    • Organisational structure
    • Suppliers and customers
    • Customers E-Billing
    • IT and Computing
    • Safety at PSI (in German)

You are here:

  1. PSI Home
  2. Labs & User Services
  3. PSD
  4. SLS
  5. MS
  6. Beamline Layout
  7. Source

Secondary navigation

MS

  • Status
  • User Information
    • Operation Schedule
    • Manuals
    • Computing/Controls
  • Staff
  • Beamline Layout Expanded submenu item
    • Source
    • Optics
  • Endstations
    • Powder Diffraction
      • PD - Description
      • PD - Detectors
      • PD - Mesquik
      • PD - Publications
      • PD - Research
    • Surface Diffraction
      • SD - Description
      • SD - Detectors
      • SD - Publications
      • SD - Research
  • Research
  • Publications
  • Scientific Highlights and News
  • Contacts

Source Characteristics


The undulator source of the MS beamline was installed at the beginning of 2011. It is a cryogenically cooled, permanent-magnet undulator with a 14-mm periodicity. The accessible range of energies spans 5 - 40 keV. The brilliance is approximately two orders of magnitude greater than that provided by the previous source, the W61 minigap wiggler.

The natural angular divergence of the source is 0.032 mrad vertical by 0.16 mrad horizontal. In monochromatic mode, the energy resolution is determined by the Si 111 monochromating crystals of the Cinel DCM to be 0.014%. A polychromatic "pink beam" mode is also available.

Type cryogenically cooled, permanent-magnet undulator (CPMU)
Length 2.0 m
Period length 14 mm
Minimum magnetic gap 3.5 mm
Number of periods 120
Emitted power 3 kW total. 214 W on optics

U14 Undulator

Brilliance curves of some x-ray sources used at the SLS. Note in particular the difference between the curve for our previous wiggler source ("W61, practice") and for our new undulator ("U14").

The U14 uses novel Nd-Dy-Fe-B alloy magnets which maintain their remanence efficiently at approximately 150 K. The undulator operates around a deviation parameter K of approximately 1.5.

Front end

The front end safety system consists of two X beam position monitors (XBPM1 and XBPM2), followed by two beam-defining aperture (0.392 = 0.160 mrad^2 and 0.270 x 0.070 mrad^2), a synchrotron radiation shutter, a fast valve, a CVD diamond filter (120 um), and a CVD diamond window (80 um).
Front End system (click to enlarge)
Front End system (click to enlarge)

Sidebar

Beamlines at SLS

Get an overview of beamlines at the SLS
top

Footer

Paul Scherrer Institut

Forschungsstrasse 111
5232 Villigen PSI
Switzerland
How to find us

Imprint
Terms and Conditions

Login

Telephone: +41 56 310 21 11
Telefax: +41 56 310 21 99
Contact form

Visitor Centre psi forum
School Lab iLab (in German)
Center for Proton Therapy

Follow us: Twitter (in English) LinkedIn Youtube Issuu RSS

Quicklinks

  • Phone Book/People Search
  • Digital User Office
  • Technology transfer
  • PSI Publications
  • Computing
  • Safety (in German)
  • Job Opportunities
  • Vocational Training (in German)
  • Suppliers
  • Customers E-Billing
  • PSI Guest House
  • PSI Gastronomie (in German)

For the media

  • Media Contact
  • Media Releases
  • Social Media Newsroom
  • Facts and Figures
  • PSI in brief
  • Films
  • DE
  • EN
  • FR