A data analysis method for isochronous mass spectrometry using two time-of-flight detectors at CSRe

TL;DR

This paper introduces a new data analysis method for isochronous mass spectrometry at CSRe using two time-of-flight detectors, significantly enhancing mass resolution by utilizing additional velocity data, especially for nuclides far from the ring's transition point.

Contribution

The paper develops and tests a detailed data analysis method for IMS with two TOF detectors at CSRe, improving mass resolving power through velocity information.

Findings

Significant improvement in mass resolving power.

Enhanced measurement accuracy for nuclides with gamma far from transition.

Method validated through simulations.

Abstract

The concept of isochronous mass spectrometry (IMS) applying two time-of-flight (TOF) detectors originated many years ago at GSI. However, the corresponding method for data analysis has never been discussed in detail. Recently, two TOF detectors have been installed at CSRe and the new working mode of the ring is under test. In this paper, a data analysis method for this mode is introduced and tested with a series of simulations. The results show that the new IMS method can significantly improve mass resolving power via the additional velocity information of stored ions. This improvement is especially important for nuclides with Lorentz factor $\gamma$-value far away from the transition point $\gamma _t$ of the storage ring CSRe.