• J. Pasternak, L.J. Jenner, Y. Uchida
  Imperial College of Science and Technology, Department of Physics, London
• R.J. Barlow
  UMAN, Manchester
• K.M. Hock, B.D. Muratori
  Cockcroft Institute, Warrington, Cheshire
• D.J. Kelliher, S. Machida, C.R. Prior
  STFC/RAL/ASTeC, Chilton, Didcot, Oxon
• Y. Kuno, A. Sato
  Osaka University, Osaka
• A. Kurup
  Fermilab, Batavia
• J.-B. Lagrange, Y. Mori
  KURRI, Osaka
• M. Lancaster
  UCL, London
• S.A. Martin
  FZJ, Jülich
• C. Ohmori
  KEK/JAEA, Ibaraki-Ken
• J. Pasternak
  STFC/RAL, Chilton, Didcot, Oxon
• S.L. Smith
  STFC/DL/ASTeC, Daresbury, Warrington, Cheshire
• H. Witte, T. Yokoi
  JAI, Oxford

The next gen­er­a­tion of lep­ton flavour vi­o­la­tion ex­per­i­ments will use high in­ten­si­ty and high qual­i­ty muon beams. Such beams can be pro­duced by send­ing a short pro­ton pulse to the pion pro­duc­tion tar­get, cap­tur­ing pions and per­form­ing RF phase ro­ta­tion on the re­sult­ing muon beam in an FFAG ring, which was pro­posed for the PRISM pro­ject. A PRISM task force was cre­at­ed to ad­dress the ac­cel­er­a­tor and de­tec­tor is­sues that need to be solved in order to re­alise the PRISM ex­per­i­ment. The pa­ram­e­ters of the ini­tial pro­ton beam re­quired and the PRISM ex­per­i­ment are re­viewed. Al­ter­na­tive de­signs of the PRISM FFAG ring are pre­sent­ed and com­pared with the ref­er­ence de­sign. The ring in­jec­tion/ex­trac­tion sys­tem, match­ing with the solenoid chan­nel and progress on the ring's main hard­ware sys­tems like RF and kick­er mag­net are dis­cussed. The ac­tiv­i­ty on the sim­u­la­tion of a high sen­si­tiv­i­ty ex­per­i­ment and the im­pact on physics reach is de­scribed. The progress and fu­ture di­rec­tions of the study are pre­sent­ed in this paper.