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Laboratory for Neutron and Muon Instrumentation (LIN)

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Instrument Upgrades


CAMEA upgrade of secondary instrument

Upgrade

  • Old triple axis Rita-II transferred to the multianalyser-box CAMEA
  • Sample table reinforced to allow the movement of the heavier analyzer/detector box
Drawing Overview of the instrument CAMEA
Instrument overview
Drawing CAMEA scheme of neutron trajectory
Neutron trajectory

Fixing clip
Fixing clip

Analyzer

  • PG crystals
  • Crystals fixed on silicon-plates by clips
  • 8 segments with 8 energies

Basic set-up

  • Total weight of secondary instrument without sample table ~10 tons
  • Shielding  polyethylene and borated aluminum
  • Vacuum-vessel stainless steel
  • Neutron window aluminum
  • Be-filter cooled to 77°K
  • Radial collimator 1°
Drawing Overview of the CAMEA multi-analyser system
Multianalyser-system
Picture View of the assembling of all crystals
Assembling of all crystals
Picture High accuracy manufactured crystal holders of CAMEA
High accuracy manufactured crystal holders
Picture Overview of the CAMEA instrument
Overview of CAMEA instrument

Air cushion assembly

  • 15 air cushion pads
  • Air cushion lifting stroke 0.06 mm
  • Maximal load per pad 800 kg
  • Vibration-insulating between instrument components and air cushion assembly
Drawing CAMEA air cushion assembly
Air cushion assembly

Detector tubes

  • 8 x 13 tubes
  • Compact construction (sub - ½ inch) for plug and adapter (in-house development)
  • Coaxial design
  • Detector tubes inside vacuum (tested up to 1e-8 mbar)
Picture CAMEA detector assembly detail
Detector assembly

Detector electronics

  • Position sensitive data streaming
  • Modular design of amplifier stages of the PSD detectors
  • Remote service and monitoring possible
  • Integration of 2nd generation data acquisition (in-house development)
Drawing CAMEA detector assembly
Picture CAMEA detector assembly top view
Picture CAMEA carrier board for up to 16 amplifier modules
Carrier board for up to 16 amplifier modules

Other electronics

  • Renewal of the complete motion control and PLC system
  • Inside "high radiation" use of resolver encoders
  • Improved resolver-electronics (in-house development)
  • Fully remote controllable
  • PLC-integration of the entire vacuum-technics
Picture CAMEA improved resolver electronics
Improved resolver electronics
Picture CAMEA vacuum technics
Vacuum-technics
Picture CAMEA motion control rack
Motion control

SANS-PA20 LLB Instrument transfer and adaption

Picture SANS-LLB at LLB CEA Saclay France
PA20 at LLB CEA Saclay France
Drawing SANS-LLB PA20 at SINQ PSI located in the former MARS instrument area
PA20 at SINQ PSI

MARS-removal

  • Instrument dismantling
  • Plasma cutting of aluminum vessel
  • Grouting of floor-pit
  • Modification of infrastructure (adaption of PA20)
Picture Inside view of MARS aluminum vessel being removed
Aluminum vessel of former MARS instrument
Picture overall view of MARS aluminum vessel being removed
Picture Plasma cutting of MARS aluminum vessel
Plasma cutting

PA20

  • 16m collimation
  • 19m detector tank
  • 2 sets of 3He detectors
Drawing SANS-I and SANS-LLB overall view
SANS-I and SANS-LLB (PA20) overall view
Drawing Lab/Workshop above SANS-LLB detector tank
Laboratory/Workshop above detector tank
Drawing staircases and concrete blocks shielding SANS-LLB
Drawing concrete block shielding SANS-LLB
Drawing neutron guide of SANS-LLB

Sample table (old table from former SANS-II)

  • Adaption of existing SANS-II table
  • Built for use with 15 T-magnet (vertical)
  • Maximum load 700 kg
Picture SANS-II sample table used for SANS-LLB
SANS-II sample table

FALCON – a new instrument at SINQ RNR 12 is coming up

FALCON – a new instrument at SINQ RNR 12 is coming up
Current FALCON area design with 3 mobile linear tables movable across 7.2m, a mobile beamstop and modular multiaxis setups on top
Overview
Modular and flexible instrumentation setup for FALCON Instrument
Arrival of Falcon equipment at PSI
Arrival of Falcon equipment at PSI

Early 2020, an agreement between the Helmholtz-Zentrum Berlin and Paul Scherrer Institut has been signed, according to which the recently commissioned Laue Diffractometer Falcon (E11) would be transferred from HZB to PSI. The purpose of this agreement was to make state-of-the-art equipment from the recently closed research reactor BER-II at HZB work for scientific community at SINQ. German users will have a possibility to continue using the instrument at SINQ.

Area of future Falcon instrument in the SINQ neutron guide hall, at the end of the neutron guide RNR12, is already built.

Area of future Falcon instrument in the SINQ neutron guide hall, at the end of the neutron guide RNR12, is already built.

A Laue camera allowing for fast orientation of single crystals has been missing at SINQ since the beginning. Using the detectors of the original E11 diffractometer from HZB, we will build a modern and versatile instrument at SINQ. FALCON, standing for Fast Acquisition Laue Camera for Neutrons, will allow to quickly assess the quality of single crystals at SINQ, and to align them in specific directions, thus saving a lot of beamtime and work effort at other instruments. The idea is to be able to use the Falcon instrument setup also for different optical applications, and as a test station for components of the future fundamental neutron physics instrument at the ESS.

At the moment, the instrument is being under construction, with a plan to finish the construction in august 2024. Parts of the 3 mobile linear tables and some motion setup is already ordered and will be delivered in the 1st semester 2024. By mid-2024 pre-assembly and partial commissioning work will start. As time progresses, further components will be ordered, assembled, and put into commissioning step by step. We are confident to go in operation with the whole instrument in 2025.

Falcon bunker including shutter, selectively disk chopper or fermi chopper and 4 axis slit system
Falcon bunker including shutter, selectively disk chopper or fermi chopper and 4 axis slit system
Falcon modular motorized tables with motion electronic (pink) and connector interfaces (green) for instrumentation on top of the tables.
Falcon modular motorized tables with motion electronic (pink) and connector interfaces (green) for instrumentation on top of the tables.
Mobile table 3 with a novel design for SINQ: A motorized bow guide.
Mobile table 3 with a novel design for SINQ: A motorized bow guide.

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Contact

Laboratory for Neutron and Muon Instrumentation
PSI
CH-5232 Villigen PSI
Switzerland
+41 56 310 20 87
Fax: +41 56 310 2939

Head of LIN
Prof. Dr. Marc Janoschek
+41 56 310 49 87
marc.janoschek@psi.ch


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