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

Margaryan, A. et al. (2017) High precision momentum calibration of the magnetic spectrometers at MAMI for hypernuclear binding energy determination. Nuclear Instruments and Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment, 846, pp. 98-105. (doi: 10.1016/j.nima.2016.09.051)

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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.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Annand, Dr John and Montgomery, Dr Rachel
Authors: Margaryan, A., Annand, J.R.M., Achenbach, P., Ajvazyan, R., Elbakyan, H., Montgomery, R., Nakamura, S.N., Pochodzalla, J., Schulz, F., Toyama, Y., and Zhamkochyan, S.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Nuclear Instruments and Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment
Publisher:Elsevier
ISSN:0168-9002
ISSN (Online):1872-9576
Published Online:23 September 2016
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