An alternative method for the measurement of the efficiency of an ion detector

Brouillard, F.;Chantrenne, S.;Claeys, W.;Cornet, Alain;Defrance, Pierre
(1983) Electronic and Atomic Collisions. 13th International Conference on the Physics of Electronic and Atomic Collisions (papers in summary form only received) — Location: Berlin, West Germany (27.July.1983)

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  • Brouillard, F.
    Author
  • Chantrenne, S.
    Author
  • Claeys, W.
    Author
  • Cornet, AlainUCLouvain
    Author
  • Defrance, Pierreorcid-logoUCLouvain
    Author
Abstract
The straightforward method for calibrating the efficiency ( gamma ) of an ion detector is to observe the counting rate (N) produced by a beam of known intensity (i). Then gamma =Nq/i. But there is an upper limit to the counting rate of a detector (typically 10/sup 5 / counts/sec) and the corresponding current intensity of the order of 10/sup -15/ A is not easy to measure precisely. It is therefore valuable to have a means of attenuating the intensity of the ion beam in a reliable way. In the method reported here, that attenuation is achieved by sweeping the ion beam, fast and repeatedly, across a narrow slit located in front of the detector. The sweep time T across the slit is smaller than the response time of the detector, so that only one pulse can be produced during one sweep.
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Brouillard, F., Chantrenne, S., Claeys, W., Cornet, A., & Defrance, P. (1983). An alternative method for the measurement of the efficiency of an ion detector. In Eichler, J.; Fritsch, W.; Hertel, I.V.; Stolterfoht, N.; Wille, U.; (ed.), Electronic and Atomic Collisions. 13th International Conference on thePhysics of Electronic and Atomic Collisions (papers in summary formonly received) (p. p. 713). Int. conference on the phys. electron. & atomic collisions. https://hdl.handle.net/2078.5/222762