Antonini, P. Buriola, L. Lombardi, A. Maggiore, M. Pranovi, L. JACoW Publishing Geneva, Switzerland 978-3-95450-205-9 10.18429/JACoW-Cyclotrons2019-TUP010 English 173-176 TUP010 emittance cyclotron injection simulation ion-source Contribution to a conference proceedings 2020 2020-06 https://doi.org/10.18429/JACoW-Cyclotrons2019-TUP010 http://jacow.org/cyclotrons2019/papers/tup010.pdf The design of an injection buncher for the 70 MeV cyclotron in use at LNL labs of INFN is under way. This buncher is to be installed between the ion source and the injection, to match the injected beam to the acceptance angle of the injection. The planned design is a 3/2 beta-λ double-gap driven with one or two harmonics of the 56 MHz RF frequency. Remotely-driven variable capacitors will be used for easy tuning of the matching box from the control system. The mechanical layout and simulations will be presented.