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Related Experiment Video

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Visualization of Low-Level Gamma Radiation Sources Using a Low-Cost, High-Sensitivity, Omnidirectional Compton Camera

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A tandem-based compact dual-energy gamma generator.

A Persaud¹, J W Kwan, M Leitner

¹E. O. Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720, USA. apersaud@lbl.gov

The Review of Scientific Instruments

|March 3, 2010

Summary

A new dual-energy tandem-type gamma generator was developed for active interrogation. This compact source design utilizes a gas stripper to efficiently produce MeV-energy gammas, enabling flexible applications.

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Area of Science:

Nuclear physics
Accelerator technology

Background:

Active interrogation requires flexible generation of MeV-energy gammas.
Tandem accelerators offer potential for higher energy nuclear reactions.

Purpose of the Study:

To report the development and initial results of a dual-energy tandem-type gamma generator.
To demonstrate the feasibility of using a gas stripper in a compact gamma source design.

Main Methods:

Development of a dual-energy tandem accelerator.
Utilizing a gas stripper to convert negative ions to positive ions and atoms.
Testing the generator for gamma production.

Main Results:

Successful operation of the tandem-based gamma generator demonstrated.
Confirmation that a gas stripper can be effectively employed in a compact source.
Preliminary data on monoenergetic gamma production obtained.

Conclusions:

The developed tandem-type gamma generator is a viable tool for producing MeV-energy gammas.
The compact design incorporating a gas stripper is effective for flexible gamma generation.
Further research into monoenergetic gamma production is warranted.