Low-energy and secondary (radioactive) ion-beam profile measurements and optimization using modified Gafchromic® EBT film

Hao Jiang, F. D. Becchetti, M. Ojaruega, R. Torres-Isea, R. S. Raymond, A. N. Villano, J. J. Kolata, A. Roberts

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


A modified version of Gafchromic® EBT radiochromic medical imaging film, which is light insensitive and requires no special development or processing, is shown to be useful for imaging low-energy (few MeV) ion beams and radioactive sources. It appears especially well suited for use with low-intensity short-lived (radioactive) secondary beams (RNB). The film can assist in optimizing the collimation needed to minimize unwanted background ions, and to accurately determine the ion-optical alignment of RNB production and transport systems. It allows for effective imaging of beam profiles and relative intensities throughout the beam-transport system and especially at locations not readily accessible to electronic imaging detectors. The special advantages of using the film for RNBs, which often are spatially extended and contaminated with unwanted ions, are demonstrated.

Original languageEnglish (US)
Pages (from-to)91-98
Number of pages8
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Issue number2-3
StatePublished - 2010

Bibliographical note

Funding Information:
This work was supported by US NSF Contracts PHY-0652591 and PHY-0758100. We thank Dr. L. Lamm (UND) and the technical staff at ISP for their assistance.

Copyright 2010 Elsevier B.V., All rights reserved.


  • Ion-beam profile imaging
  • Modified Gafchromic® EBT film
  • Radioactive ion beams
  • TwinSol


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