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Physics Section     

Technical Meeting on Instrumentation for Digital Spectroscopy

11 – 15 October 2010
IAEA Headquarters, Vienna, Austria
Meeting Room F0822

Form A (word)
Form B (word)
Form C (word)


Online Pre-registration


The different spectroscopy setups with various digital signal processing (DSP) systems have been developed and successfully implemented in several laboratories world-wide during the last decade. The added value and real benefit of such innovative setups have clearly been proven and opened new opportunities for their applications. The software necessary for operation of such systems has to be, however, developed with respect to particular applications.
Digital pulse processing is a signal processing technique in which detector (preamplifier output) signals are directly digitized and processed to extract quantities of interest (pulse height, pulse shape, arrival time etc.). Such an approach has significant advantages compared to the traditional analogue signal shaping setup, in particular:

  1. Application of analysis with consideration of pulse-by-pulse differences,
  2. Analysis of transient induced charge signals,
  3. Improvement of dead-time parameter,
  4. Easy capturing of signals including implementation of complex analyses,
  5. Signal processing with implemented coincidence-based criteria (different detectors or different parts of the same detector),
  6. Effective application of data post-processing; pre-analysis of waveforms, pulse modelling and verification of pulse pile up de-convolution algorithms.

During these last years, the analogue-to-digital converters (ADCs) as well as more complex digital-signal-processing (DSP) units are increasingly being used for nuclear spectroscopy applications. This is due to the fact that these systems are becoming fast enough for applications in the digital real time processing of nuclear radiation detection data. The recent R&D approach is to simply digitize the incoming pulse signal from a radiation detection system and deconvolve it into individual pulses on-line in real time. This might be accomplished by taking several deterministic approaches including fitting the intensity and delay time of individual convolved pulses by a linear–nonlinear least-squares method or by a sophisticated transform approach. It is expected that soon there will be a possibility to eliminate almost all pulse pile-up distortion associated with nuclear radiation spectroscopy with a dedicated PC combined with an ADC for an individual detector system.
The application of DSP systems leads to new possibilities in processing of measured data, development of automatic measurement setup, and offline data correction related to other measurement parameters like temperature or magnetic field influence. New software for processing of detector data can replace the task of analogue modules such as single channel analyzers, constant fraction discriminators, time to amplitude converters and/or multichannel analyzers. Another role is to add new possibilities such as an automatic measurement setup capability and offline data filtering. A significant advantage of DSP is the possibility to use different approximation methods without the need to repeat measurements as in analogue systems. For example, small changes in channel window or in other parameters of analogue systems require repetitive measurements, whereas in a digital system the same acquired data set can be used with the relevant software. From this point of view, the innovative DSP approach is much more efficient.

The overall objective of this Technical Meeting (TM) on “Instrumentation for Digital Spectroscopy” is to provide a forum to share best practices, design aspects, practical experiences including maintenance as well as to exchange information through scientific presentations and brainstorming discussions. Moreover, the TM should aid in building a communication bridge between various research groups especially from developed and developing countries as well as various industrial partners involved in development of nuclear spectroscopy and peaceful applications of nuclear technology. It is anticipated that this meeting will achieve the following specific objectives:

  1. To provide an overview of state-of-the-art in the field of DSP including current trends,
  2. To review DSP techniques, applications and implementations including their advantages and limitations,
  3. To review and summarize DSP applications in the field of nuclear spectroscopy resulting in improvement of measurement setups and efficiency,
  4. To define the needs of the Member States laboratories for implementation of DSP systems in support of nuclear sciences and applications,
  5. To strengthen international and regional cooperation and networking between scientists from developing and developed countries with special emphasis on the transfer of knowledge and possible role of the IAEA.

The outcome of the meeting will be a meeting report summarizing the current status and trends in the field of DSP including conclusions and recommendations. The report will reflect priorities and future needs in the field of instrumentation for Digital Spectroscopy applications. In addition, the full proceedings will eventually be published electronically.

The meeting will include the invited and contributed oral presentations given in sessions on specific topics, with subsequent discussions. The duration of the presentations will be defined by the organizers and communicated to the participants in due time. An electronic projector with a computer capable of reading CDs and memory sticks will be available (Power Point or Acrobat recommended). The official language of the meeting is English. No interpretation will be provided. It is expected that the meeting will start at 09:00 on 11 October 2010 and will be concluded by 15:00 on 15 October 2010.

In order to participate in the meeting, the following major steps must be completed:

1) Pre-registration
Online pre-registration is open to all interested participants; however, all further steps specified below must be completed in order for final registration to be accepted. For online pre-registration please follow the link Online Pre-registration.

2) Abstract Submission
Persons wishing to make a presentation must submit an abstract of maximum one page (A4) in total length, in electronic format directly to  and The abstract must include text only with the author’s name, affiliation and e-mail address. Acceptable file formats are Microsoft Word, HTML, or plain text. The one page abstract must be received by 2July 2010. The abstracts will be evaluated by the Scientific Committee, and authors will be informed of the acceptance of their contributions by e-mail, by 4 August 2010. The program agenda and a book of abstracts will be prepared and e-mailed to all participants as PDF file attachments.
Important: Contributors of material to be included in the IAEA’s proceedings are required to assign all copyrights or rights to publish to the IAEA.
The authors should make sure that the files do not include copyrighted materials or other impediments for reproduction.

The abstract shall be prepared according to the following instructions:
1) Page size: A4 (21 cm by 29.7 mm) – vertical orientation
2) Margins 25mm all around
3) Layout:

  1. Title: single-spaced, 14-point size, Times New Roman Font (TNR), bold
  2. Authors: single-spaced, 12-point size, TNR Font
  3. Affiliation: single-spaced, 12-point size, TNR Font, italic
  4. Text: 1.5 spaced, 12-point size, TNR Font
  5. Length: one page

 Important: In case of sending Microsoft Word files, authors should use True Type Embedded Fonts (when saving the file, click Tools, then Options, and tick Embed True Type fonts. This will help to prevent change of fonts when the file is read in a different system, as will be in most of the cases).

3) IAEA participation
A request for participation will only be accepted if the Participation Form is transmitted through the appropriate Governmental representative authority, i.e. Ministry of Foreign Affairs or National Atomic Energy Authority, and the nomination is received at the IAEA by 2 July 2010.
Persons from IAEA Member States or invited international organizations are eligible to attend. Participants should be actively involved in the subject matter of the meeting.

The presentations should be sent either as a Microsoft Word file, Power Point file, or Adobe PDF format file, complete with all text, figures and tables. All presentations will be converted as received, to an Adobe PDF file and placed on a CD-ROM for distribution to all participants at the meeting.

A manuscript should be prepared for inclusion in the meeting proceedings compiled by the IAEA in CD-ROM format (it will be available on the web and will also include the presentations of authors submitting the manuscripts). For detailed instructions regarding how to prepare the manuscript please check the link “Author Instructions”. Authors must submit a signed Paper Submission Form to the IAEA for copyright purposes. An electronic version of all papers will be collected during the meeting.

Costs for the organization of the meeting are borne by the IAEA. No registration fee is charged to participants. As a general rule, the IAEA does not pay for participants´ travel and living expenses. However, limited financial support is available to assist the attendance of selected experts with active participation (presentation), principally those from developing Member States. Usually only one grant for financial support is awarded per Member State. If participants or governments wish to apply for a grant on behalf of one of their experts, they should ensure that applications for grants are:

  1. Received by the IAEA Scientific Secretaries by 2 July 2010,
  2. Accompanied by a duly completed and signed Grant Application Form,
  3. The participant has an accepted contribution.

Applications for grant that do not comply with these requirements will not be considered. The grants awarded will be in the form of lump sums usually covering only part of the cost of attendance. The grants are paid at the meeting. Information on the awarded grants (financial support) will be provided around 4 August 2010.

Designated participants who require a visa to enter Austria should submit the necessary application to the nearest diplomatic or consular representative of Austria as soon as possible. A letter of invitation, if needed, has to be requested from the General Secretariat of the TM (Ms Jordana, Antal

It is the responsibility of the participants to arrange their accommodation. However, they will be provided with a list of hotels which offer special rates to IAEA meeting participants. Detailed information on transport arrangements to/from Vienna and other items will be sent to all designated participants approximately 6 weeks before the meeting.


2 July 2010

Submittal of abstracts according to the instructions above closes.

2 July 2010

Submittal of requests to the IAEA for financial support according to the instructions above closes.

4 August 2010

Participants informed of the acceptance of their contributions.

4 August 2010

Participants informed of the acceptance of their request for financial support.

11 October 2010

Meeting begins. – please bring an electronic copy (word or pdf file) of your manuscript paper to be collected by the IAEA Scientific Secretary.


Mr Andrej ZEMAN
NAPC Physics Section
International Atomic Energy Agency (IAEA)
Vienna International Centre
Wagramer Strasse 5, P.O. Box 100
A1400 Vienna, Austria
Tel.: 0043 1 2600-21705, Fax: 0043 1 26007-21705

IAEA Laboratories, Seibersdorf
International Atomic Energy Agency (IAEA)
Vienna International Centre
Wagramer Strasse 5, P.O. Box 100
A1400 Vienna, Austria
Tel.: 0043 1 2600-28236, Fax: 0043 1 26007-28236


Ms Jordana ANTAL
NAPC Physics Section
International Atomic Energy Agency
Vienna International Centre
Wagramer Strasse 5, P.O. Box 100
A1400 Vienna, Austria
Tel.: 0043 1 2600-21754, Fax: 0043 1 26007-21754