High Precision Momentum Calibration of the Magnetic Spectrometers at MAMI for Hypernuclear Binding Energy Determination

摘要

We propose a new method for absolute momentum calibration of magneticspectrometers used in nuclear physics, using the time-of-flight (TOF),differences of pairs of particles with different masses. In cases where theflight path is not known, a calibration can be determined by using the TOFdifferences of two pair combinations of three particles. A Cherenkov detector,read out by a radio frequency photomultiplier tube, is considered as thehigh-resolution and highly stable TOF detector. By means of Monte Carlosimulations it is demonstrated that the magnetic spectrometers at the MAMIelectron-scattering facility can be calibrated absolutely with an accuracy$\delta p/p\leq 10^{-4}$, which will be crucial for high precisiondetermination of hypernuclear masses.