On the linearity of the MINOS light-injection calibration system Academic Article uri icon

abstract

  • The MINOS light-injection calibration system has been fully documented in a previous article (Nucl. Instr. and Meth. A 492 (2002) 353). Upon commissioning in the MINOS detectors, the system was found to give a non-linear response to variations in the intensity of injected light. The source of this non-linearity has been traced to a small change in the spectrum of the injected light as a function of the current applied to the original blue LEDs, in combination with a rapidly varying spectral response function of the wavelength-shifting fibre used in the detector. Both aspects of the problem have been addressed successfully by use of LEDs with different spectral characteristics, and the system now has a linear response. 2003 Elsevier B.V. All rights reserved.

published proceedings

  • NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT

author list (cited authors)

  • Adamson, P., Barrett, L., Belias, A., Blake, A., Cabrera, A., Falk, E., ... White, R. F.

citation count

  • 8

complete list of authors

  • Adamson, P||Barrett, L||Belias, A||Blake, A||Cabrera, A||Falk, E||Harris, PG||Hartnell, J||Howcroft, C||Kordosky, M||Lang, K||Lee, R||Liu, J||Michael, D||Morse, R||Nelson, JK||Nichol, R||Pearce, G||Ruddick, K||Smith, PN||Symes, PA||Thomas, J||Vahle, PL||Webb, R||Weber, A||White, RF

publication date

  • January 2004