Methods for optical calibration of the BigBite hadron spectrometer

Mihovilovič, M. et al. (2012) Methods for optical calibration of the BigBite hadron spectrometer. Nuclear Instruments and Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment, 686, pp. 20-30. (doi:10.1016/j.nima.2012.04.085)

Full text not currently available from Enlighten.

Abstract

The techniques for the optical calibration of Jefferson Lab's large-acceptance magnetic hadron spectrometer, BigBite, have been examined. The most consistent and stable results were obtained using a method based on singular value decomposition. In spite of the complexity of the optics, the particles' positions and momenta at the target have been precisely reconstructed from the coordinates measured in the detectors by means of a single back-tracing matrix. The technique is applicable to any similar magnetic spectrometer and any particle type. For 0.55 GeV/c protons, we have established a vertex resolution of 1.2 cm, angular resolutions of 7 mrad and 13 mrad (in-plane and out-of-plane, respectively), and a relative momentum resolution of 1.6%.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Annand, Dr John and Hamilton, Dr David
Authors: Mihovilovič, M., Širca, S., Allada, K., Anderson, B.D., Annand, J.R.M., Averett, T., Camsonne, A., Chan, R.W., Chen, J.-P., Chirapatpimol, K., de Jager, C.W., Gilad, S., Hamilton, D.J., Hansen, J.-O., Higinbotham, D.W., Huang, J., Jiang, X., Jin, G., Korsch, W., LeRose, J.J., Lindgren, R.A., Liyanage, N., Long, E., Michaels, R., Moffit, B., Monaghan, P., Nelyubin, V., Norum, B.E., Piasetzky, E., Qian, X., Qiang, Y., Riordan, S., Ron, G., Rosner, G., Sawatzky, B., Shabestari, M., Shahinyan, A., Shneor, R., Subedi, R., Sulkosky, V., Watson, J.W., and Zhang, Y.-W.
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
ISSN:0168-9002
ISSN (Online):1872-9576
Published Online:11 May 2012

University Staff: Request a correction | Enlighten Editors: Update this record