High precision momentum calibration of the magnetic spectrometers at MAMI for hypernuclear binding energy determination

A. Margaryan, J. R.M. Annand, P. Achenbach, R. Ajvazyan, H. Elbakyan, R. Montgomery, S. N. Nakamura, J. Pochodzalla, F. Schulz, Y. Toyama, S. Zhamkochyan

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

We propose a new method for absolute momentum calibration of magnetic spectrometers used in nuclear physics, using the time-of-flight (TOF) differences of pairs of particles with different masses. In cases where the flight path is not known, a calibration can be determined by using the TOF differences of two pair combinations of three particles. A Cherenkov detector, read out by a radio frequency photomultiplier tube, is considered as the high-resolution and highly stable TOF detector. By means of Monte Carlo simulations it is demonstrated that the magnetic spectrometers at the MAMI electron-scattering facility can be calibrated absolutely with an accuracy δp/p≤10−4, which will be crucial for high precision determination of hypernuclear masses.

Original languageEnglish
Pages (from-to)98-105
Number of pages8
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume846
DOIs
Publication statusPublished - 2017 Feb 21

Keywords

  • Absolute calibration
  • Cherenkov detectors
  • Magnetic spectrometers
  • Radio Frequency Photomultiplier
  • Time of flight

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation

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