In order to accept very forward angle scattering particles, Jefferson Lab HKS experiment uses an on-target zero degree dipole magnet. The usual spectrometer optics calibration procedure has to be modified due to this on-target field. This paper describes a new method to calibrate HKS spectrometer system. The simulation of the calibration procedure shows the required resolution can be achieved from initially inaccurate optical description.
@article{arxiv.nucl-ex/0511011,
title = {Optical Calibration For Jefferson Lab HKS Spectrometer},
author = {L. Yuan and L. Tang},
journal= {arXiv preprint arXiv:nucl-ex/0511011},
year = {2007}
}