I am glad to be able to assist with the making of this special issue on ANIMMA 2015 again, and I would like to thank the organizers of the conference to have chosen the IEEE Transactions on Nuclear Science again for the collection of publication-grade material presented at the meeting. But I would also like to express my thanks to the Associate Editors that have conducted the peer-review process of all the manuscripts submitted in a highly professional manner. It is our goal to have every paper evaluated by at least three colleagues active in the field, and so the number of individuals that have contributed to this issue is high, again higher than in the previous years: not less than 459 colleagues have spent their valuable time by serving as reviewers for the material, whether they have attended the conference and submitted a manuscript themselves or not. It is the efficient and professional, though voluntary work, of our Associate Editors and reviewers that made this special issue become true.