 LYCCA : Lund-York-Cologne-Calorimeter shall be placed at the end of Super-FRS at FAIR as part of HISPEC campaign.  Based on CATE calorimeter used for RISING campaign, with the addition of time-of flight (TOF) measurements for better fragment identification.  Simulations by Mike Taylor show that TOF detectors require resolution of at least 100ps, ideally less than 50ps. 50 Fe 51 Fe 52 Fe 53 Fe Super-FRS LYCCA Target Detectors Wall Detectors

 Wafers of polycrystalline diamond purchased from Diamond Detectors Ltd measuring 20 x 20 mm, and 300µm thick.  Contacts fabricated at University of Surrey. Front contacts: divided into four strips for lower capacitance Back contacts: full pad for grounding purposes PCB: specially deigned for high frequency signals and impedance matched

 Detectors positioned in transmission geometry so that 500MeV and 800MeV of energy was deposited into front and back detectors respectively. High Frequency Cables 15mm 40 MeV/u Ar 40 Leading Edge Discriminator found to produce best results

FWHM = 104 ± FWHM = 134ps 95ps resolution per detector

15mm Flight Path O 16 Ne 20

30mm Flight Path O 16 Ne 20

14.6 pF 8.11 pF 1.95 pF Rise time < 0.5 ns Data taken at University of Birmingham, using scattered 50MeV 3 He beam. (ns)

Thank You for Listening Collaborators: M.A.Bentley, B.S.Nara Singh and S.P.Fox University of York, UK F.Schirru and A.Lohstroh University of Surrey, UK L.Trache, A.Banu and rest of RET Group Cyclotron Institute, Texas A&M University M.Freer, D.Parker and Cyclotron staff University of Birmingham, UK Thanks to M.J.Taylor and D.Bloor for figures in slide 2