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NeXus'2001 Workshop

March 20-21, 2001

Paul Scherrer Institut, Villigen, Switzerland

NeXus'2001 is now over. Check the NeXus home page for reports of the workshop conclusions as and when they are prepared. This web page now includes links to the NeXus tutorial presented at the worskhop.

This is the first public workshop to discuss the NeXus data format. It is intended for all potential users of the NeXus format, such as those involved in the design, development, or general use of :

  • neutron/x-ray data analysis and visualization software
  • Monte Carlo simulations of neutron/x-ray instruments and experiments
  • neutron/x-ray data acquisition and archival systems

Items on the agenda included :

  • Introduction to NeXus
  • Description of the NeXus API (C, Fortran, and Java)
  • Use of the NeXus data server
  • Demonstration of applications using NeXus
  • Use of XML in formal NeXus standards
  • Standardization of instrument formats
  • Establishment of future NeXus management structure

Although the API is now fully functional, and it is relatively easy to read and write NeXus data files, the contents of those files are not defined in sufficient detail. One of the objects of the workshop is to reach agreement on the required contents of files in a number of instrument categories, in order to make it easier to write portable analysis and visualization software. Examples of such categories are :

  • Neutron/X-ray Powder Diffractometers
  • Neutron/X-ray Single Crystal Diffractometers
  • Neutron/X-ray Small Angle Scattering Diffractometers
  • Neutron/X-ray Reflectometers
  • Neutron/X-ray Triple-Axis Spectrometers
  • Neutron Direct-Geometry Time-of-flight Spectrometers
  • Neutron Inverse-Geometry Time-of-flight Spectrometers
  • Muon Spin Relaxation

If you are interested in participating in the preparation of these standards before the workshop, please let us know in the comments section of the registration form below, stating what instruments you are interested in. Use the same section to express an interest in making a presentation or demonstrating some software using NeXus.

N.B. This workshop will directly precede the annual general meeting of the SCANS collaboration from March 22-23 because of the possible overlap in those interested in attending both.

Agenda

Tuesday, March 20
9:00 Introduction and Welcome from Prof. Dr Albert Furrer, Head of the Laboratory of Neutron Scattering.
09:15 Introduction to NeXus (Ray Osborn)
  • History
  • Design Philosophy
  • File Structure
  • Instrument Definitions
10:00 Discussion of current and future status
  • APS, Dubna, FRM-II, ILL, IPNS, ISIS, Jülich, NIST, PSI, Risø, Saclay, Studsvik, SNS
10:30 Coffee Break
11:00 Introduction and Discussion of XML in NeXus
12:00 Lunch Break
13:00 Introduction to API (Mark Könnecke)
  • Structure of core API
  • Higher-level software tools
  • Java Interface
  • NeXus Data Server
14:30 Software demonstrations
  • Jörn Beckmann/Jens Krüger (FRM-II) - Browser/plotting
  • Eric Boucher (APS) - scan2nexus
  • Elena Litvinenko (Dubna) - PV-wave
  • Dennis Mikkelson (U. Wisconsin) - ISAW
16:00 Coffee Break
16:30 Establishment of working groups
  • Instrument Definitions (Neutron/Xray)
  • Instrument Definitions (Muons)
  • Software Developments
18:00 Break for dinner (starting at 19:00)
Wednesday, March 21
09:00 Future developments (Przemek Klosowski and Nick Maliszewskij)
  • HDF5
  • Object Brokering
  • RPM's
10:00 Coffee Break
10:30 Working Groups
12:00 Lunch Break
13:30 Report from Working Groups and discussion
14:30 Final summary
15:00 Official Conclusion of Program
15:30 Coffee Break
16:00 Tour of PSI (SINQ and SLS)

Registration

There is no registration fee for attending this workshop but, if you intend to participate, we request that you fill in the following form as soon as possible so that we can estimate the numbers attending. If you cannot make a firm commitment at this stage, please update your status using this form when you can. Fill in the Comments section if you wish to make any suggestions about topics for the workshop agenda, or if you are interested in making a contribution during the workshop, e.g. a presentation or demonstration.

Full Name
Affiliation
Email Address
I will definitely attend      I hope to attend      I cannot attend but wish to leave a comment
Comments
             

Current List of Participants

  • Per-Olof Åstrand (Risø, Denmark)
  • Alex Amato (PSI, Switzerland)
  • Jörn Beckmann (FRM-II, Germany, USA)
  • Eric Boucher (APS, Argonne, USA)
  • Martyn Bull (ISIS, UK)
  • Alain Buteau (LLB/CEA, Saclay, France)
  • Stephen Cottrell (ISIS, UK)
  • Matthias Drochner (FZ Jülich, Germany)
  • Uwe Filges (PSI, Switzerland)
  • Damian Flannery (ISIS, UK)
  • Ron Ghosh (ILL, France)
  • Heinz Heer (PSI, Switzerland)
  • Josef Heinen (FZ Jülich, Germany)
  • Jason Hodges (SNS, USA)
  • Markus Janousch (PSI, Switzerland)
  • Michael Johnson (ISIS, UK)
  • Harald Kleines (FZ Jülich, Germany)
  • Przemek Klosowski (NIST, USA)
  • Kevin Knowles (ISIS, UK)
  • Jens Krüger (FRM-II, Munich, Germany)
  • Mark Könnecke (PSI, Switzerland)
  • Kim Lefmann (Risø, Denmark)
  • Elena Litvinenko (FLNP/JINR, Dubna, Russia)
  • David Maden (PSI, Switzerland)
  • Nick Maliszewskyj (NIST, USA)
  • Dennis Mikkelson (University of Wisconsin-Stout, USA)
  • Tim Mooney (APS, Argonne, USA)
  • Ray Osborn (IPNS, Argonne, USA)
  • Toby Perring (ISIS, UK)
  • Helena Pruchova (PSI, Switzerland)
  • Andrea-Raeto Raselli (PSI, Switzerland)
  • Tanya Maria Riseman (University of Birmingham, UK)
  • Detlef Vermeulen (PSI, Switzerland)

Accommodation

The recommended accommodation will be in the PSI Guest House. Please make reservations using the web form linked to <http://www.psi.ch/psi_homepage_e/services/services.htm> (follow link to "Guesthouse") giving "SCANS" as the PSI Project and "Mark Koennecke" as the PSI Project Manager. The prices, in Swiss Francs, are as follows :

up to 3 nights four nights and longer
single 45.- 30.-
single with ensuite shower and WC 65.- 50.-
double 55.- 40.-
studio (shower, WC, kitchen) 85.- 65.-

Please note that the single and double rooms come with shower and WC on the same floor, but not in the room unless otherwise stated.

The guesthouse is on site and is difficult to reach by public transport after hours. During working hours, there is an hourly bus service from both Brugg and Unter-Siggenthal railway stations. Otherwise, take a taxi from Brugg to PSI (6km) or a bus to Villigen and make a 20 minute walk. Further transport details and lists of other hotels, can be found at <http://www.psi.ch/psi_homepage_e/services/services.htm> (follow links to "How to get to PSI" and "Service for Scientists and Users" respectively).

Site Map

This is a map of the PSI site showing the location of the workshop. Click on it to display it in a separate browser window at full resolution (300kB).

PSI Site Map

Workshop Organizers

Mark Könnecke, Paul Scherrer Institut, Switzerland
Tel: +41 (56) 310 2512, E-mail: Mark.Koennecke@psi.ch

Ray Osborn, Argonne National Laboratory, USA
Tel: +1 (630) 252-9011, E-mail: ROsborn@anl.gov


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Comments to: Ray Osborn <ROsborn@anl.gov>
Revised: Mon, Apr 9, 2001

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