Plastic scintillation detectors for time-of-flight mass measurements

K. Wang, A. Estrade, S. Neupane, M. Barber, M. Famiano, T. Ginter, D. McClain, N. Nepal, J. Pereira, H. Schatz, G. Zimba

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

Fast timing detectors are an essential element in the experimental setup for time-of-flight (ToF) mass measurements of unstable nuclei. We have upgraded the scintillator detectors used in experiments at the National Superconducting Cyclotron Laboratory (NSCL) by increasing the number of photomultiplier tubes that read out their light signals to four per detector, and characterized them in a test experiment with 48Ca beam at the NSCL. The new detectors achieved a time resolution (σ) of 7.5 ps. We systematically investigated different factors that affect their timing performance. In addition, we evaluated the ability of positioning the hitting points on the scintillator using the timing information and obtained a resolution (σ) below 1 mm for well-defined beam spots.

Original languageEnglish
Article number164199
JournalNuclear Inst. and Methods in Physics Research, A
Volume974
DOIs
StatePublished - Sep 11 2020

Keywords

  • Photomultiplier tubes
  • Plastic scintillator
  • Time-of-flight mass measurement
  • Time-walk correction

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