• A readout system for highly sensitive diamond detectors for FLASH dosimetry

    S. Salvatori1,2; S. Pettinato1,2; G. Sinisi3; L. Galluzzo4; G. Felici4; M. Girolami2 and M.C. Rossi3

    1. Department of Engineering, University “Niccolò Cusano”, 00166 Rome, Italy
    2. Istituto di Struttura della Materia, Consiglio Nazionale delle Ricerche (ISM-CNR), 00016 Rome, Italy
    3. Department of Industrial, Electronic, and Mechanical Engineering, Roma Tre University, 00146 Rome, Italy
    4. SIT – Sordina IORT Technologies S.p.A., Aprilia, 04011 Latina, Italy

    S. Pettinato1,2; G. Felici3; L. Galluzzo3; M. Girolami2; M.C. Rossi4 and S. Salvatori1,2 Accurate dosimetry of ultra-high-dose-rate beams using diamond detectors remains challenging, primarily due to high photocurrent peaks that exceed the input dynamics of precision electrometers. This work aimed to demonstrate the effectiveness of compact gated integration electronics in conditioning current peaks (>20 mA) generated…

  • Improving the Performance of HPHT-Diamond Detectors for Pulsed X-Ray Dosimetry Using the Synchronous Detection Technique

    S. Salvatori1,2; S. Pettinato1,2; G. Sinisi3; L. Galluzzo4; G. Felici4; M. Girolami2 and M.C. Rossi3

    1. Department of Engineering, University “Niccolò Cusano”, 00166 Rome, Italy
    2. Istituto di Struttura della Materia, Consiglio Nazionale delle Ricerche (ISM-CNR), 00016 Rome, Italy
    3. Department of Industrial, Electronic, and Mechanical Engineering, Roma Tre University, 00146 Rome, Italy
    4. SIT – Sordina IORT Technologies S.p.A., Aprilia, 04011 Latina, Italy

    A single-crystal diamond sample grown by high-pressure high-temperature (HPHT) technique was used for the fabrication of a metal–semiconductor–metal (MSM) photoconductor. The sample quality was evaluated by means of spectral photocurrent measurements highlighting the presence of a significant density of defect states within the diamond bandgap, responsible for trap-mediated conduction mechanisms. The photoconductor was fully characterized…