An implantation Diamond detector as a beam monitor for an intense radioactive ion beam

J. S. Rojo*, C. Aa Diget, N. De Séréville, M. Assié, A. Lemasson, D. Ramos, A. Lohstroh, C. Reardon

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review


We present the characterization of a Diamond detector and its response as a beam rate monitor with full stopping of radioactive ion beams of high intensity. The detector has been implemented in the VAMOS focal plane at GANIL and utilised in conjunction with AGATA and MUGAST detector systems. In the present experiment, for the first time, the beam has been fully stopped, rather than being recorded by a transmission detector. The Diamond detector has been tested for use as a particle counter for monitoring a high intensity, radioactive ion beam in the study of the alpha transfer reaction 7Li(15O,t)19Ne. The present experiment, which took place in July 2019, has used a 15O radioactive beam with a high intensity of 107 particles per second due to the weak reaction population and it has been measured using the VAMOS spectrometer and the AGATA and MUGAST arrays. Detailed monitoring of beam intensities in the range of 106 - 107 particles per second is particularly challenging in radioactive ion beam experiments. Thus, the chosen method involves the diamond detector due to its sub-nanosecond response time as well as its radiation hardness. The study of the alpha transfer reaction 7Li(15O,t)19Ne will be performed to determine the radiative alpha capture rate on 15O which is a key breakout route from the Hot-CNO cycle which leads to a explosive nucleosynthesis in X-ray bursts.

Original languageEnglish
Article number012040
Number of pages5
JournalJournal of Physics: Conference Series
Issue number1
Publication statusPublished - 23 Dec 2020
Event27th International Nuclear Physics Conference, INPC 2019 - Glasgow, United Kingdom
Duration: 29 Jul 20192 Aug 2019

Bibliographical note

Funding Information:
The authors would like to thank the fantastic technicians at University of York and at GANIL, who helped to build, mount and make the diamond detector work for the experiment.

Publisher Copyright:
© Published under licence by IOP Publishing Ltd.

Copyright 2020 Elsevier B.V., All rights reserved.

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