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NKS-B GammaWorkshops: Nordic workshops for users of gamma spectrometry

A series of linked workshops on gamma spectrometry, 11-12 of September 2012, Hótel Örk, Hveragerði, Iceland

A follow-up on issues identified at the two NKS GammaSem seminars, held in 2009 and 2010; and the GammaWorkshop held at Risø National Laboratory for Sustainable Energy, Roskilde, in 2011

Information about the hotel and surroundings can be found here: http://www.hveragerdi.is/English/ http://www.hotel-ork.is/index.php?lang=en

The GammaWorkshops activity enables the users to address the problems in gamma spectrometry they find most pressing, through lectures and practical exercises in addition to sharing their experience with others in a similar position. The main topics are:

1. Lessons learned from Fukushima including work on real spectra
2. In-situ gamma spectrometry demonstrations
3. Other types of detectors
4. Background components
5. User experience with new techniques

Lecturers at the seminar will be Dr. Sandor Tarjan, Dr. Tim Vidmar, Dr. Andrew Tyler, Dr. Annika Tovedal and members of the GammaWorkshops working group.

The programme is being prepared by a working group consisting of: Elisabeth Strålberg (IFE), Sigurður Emil Pálsson (IRSA), Henrik Ramebäck (FOI), Sven P. Nielsen (DTU/Risø) and Seppo Klemola (STUK). Updated information, detailed agenda and links to technical background material will be available on this GammaWiki web site: https://www.gr.is/wiki/GammaWiki/

Details concerning hotel reservation and transport between Keflavik/Reykjavik and Hveragerði will be given at the GammaWiki web site.

In order to facilitate planning, we would appreciate if those interested in participating would fill out and return the enclosed registration form as soon as possible. Deadline for proposal is 2012-xx-xx.

For registration and more info please contact: gamma@gr.is

Contact persons are Elisabeth Strålberg (elisas@ife.no) and Sigurður Emil Pálsson (sep@gr.is).

Participants are encouraged to bring their own computers, with the software they use for gamma spectrometry. In some of the sessions data for demonstration and practice will be distributed, in some software will be distributed as well.

• 12:15-12:30 : Summing up of morning's workshops, questions

• 12:30-13:30: Lunch

13:30-16:00, Uncertainties and detection limits (including GUM and ISO-11929:2010) (Henrik Ramebäck)

1. 13:30-14:00  : Some small remarks: The GUM method: from definition of the measurand to reporting measurement results
2. 14:15-15:00  : The model equation in gamma spectrometry, and a tool for uncertainty propagation
3. 15:00-16:00  : Workshop example: Calculating combined uncertainty in gamma ray spectrometry

• 16:15:17:00  : Characteristic limits, ISO 11929 (Kaj Heydorn)

Preliminary agenda

Day 1: Tuesday, September 11th

08:30-10:15 Comparison of three gamma-ray spectrum evaluation software on the samples originating from Fukushima (short coffee break included) Dr. Sandor Tarjan

Software: Gamma Vision, Genie 2k, Winner 6.0

• Isotope identification
• Working libraries for goal oriented isotope identification

1. Possible data sources
2. Editable and non-editable libraries

• Efficiency calibration and transfer of the efficiencies, LABSOCS
• Corrections

1. Self-attenuation correction of the samples
2. Correction of the true coincidence summing effect
3. Decay corrections for simultaneous presence of mother and progenies
4. Spectral interferences

11:30-11:30: Exercise on real spectra (different study cases)

Parallell sessions:

1. Dr. Tim Vidmar and Genie users
2. Dr. Sandor Tarjan and GammaVision users

11:30-12:30: Lunch

12:30-13:15: Exercise cont.

13:30-14:45: Dr. Andrew Tyler In-situ gamma spectrometry, incl. demonstrations – part 1

15:00-15:30: Dr. Sandor Tarjan One possibility for method validation of the in-situ gamma-ray spectrometry for flat geometry - A presentation based on real experiments

15:30-16:00: Dr. Tim Vidmar A "quick and dirty" tool for calculating the in-situ efficiency curve for a HPGe or a NaI detector based on measurement on the detector axis only (at a distance of 1 m)

Day 2: Wednesday, September 12th

08:30-09:15: Dr. Andrew Tyler In-situ gamma spectrometry, incl. demonstrations – part 2

09:30-10:15: Dr. Sven P. Nielsen QA, what is needed in an accredited laboratory? Validation of detection limits

10:30-11:30: Dr. Annika Tovedal and Dr. Henrik Ramebäck Background components

11:30-12:30: Lunch

12:30-13:00: Dr. Seppo Klemola New developments – introduction

13:00-13:30: Dr. Henrik Ramebäck Other types of detectors (LaBr, NaI…), comparisons for practical use, for identification not activity determination

13:45-14:30: Dr. Sven P. Nielsen User experience with new techniques (electric cooling, integrated electronic systems, safe working environment).

14:45-15:30: Open discussion, including feedback survey

Registration and accomodation

For registration please download and fill out the following registration form and then send it to gamma@gr.is.

Registration form

Please submit your registration as early as possible.

GammaSem: Nordic seminars for users of gamma spectrometry

GammaWiki is a product of the NKS-B GammaSem activity

Reports from the GammaSem seminars in 2009 and 2010 are available from the NKS web site, www.nks.org

• Elisabeth Strålberg (ed.) et al: GammaSem Proceedings - A Nordic seminar for users of gamma spectrometry - Kjeller 28-29 September 2010 - NKS-224
• Paula Nunez (ed.) et al: GammaSem Proceedings - A Nordic seminar for users of gamma spectrometry - Oslo 15-16 September 2009 - NKS-212

Useful resources on the Web

Useful resources on the Web

References

Wiki info

Editing GammaWiki (only for co-ordinators of GammaWorkshops work groups)