On the linearity of the MINOS light-injection calibration system

被引：10

作者：

Adamson, P

Barrett, L

Belias, A

Blake, A

Cabrera, A

Falk, E

Harris, PG ^{[1
]}

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

机构：

[1] Univ Sussex, Dept Phys & Astron, Brighton BN1 9QH, E Sussex, England

[2] CALTECH, Lauritsen Lab, Pasadena, CA 91125 USA

[3] Univ Cambridge, Cavendish Lab, Dept Phys, Cambridge CB3 0HE, England

[4] Harvard Univ, High Energy Phys Lab, Cambridge, MA 02138 USA

[5] UCL, Dept Phys, London WC1E 6BT, England

[6] Univ Minnesota, Sch Phys & Astron, Minneapolis, MN 55455 USA

[7] Univ Oxford, Sub Dept Particle Phys, Oxford OX1 3RH, England

[8] Rutherford Appleton Lab, Didcot OX11 OQX, Oxon, England

[9] Univ Texas, Dept Phys, Austin, TX 78712 USA

[10] Texas A&M Univ, Dept Phys, College Stn, TX 77843 USA

[11] Western Washington Univ, Dept Phys, Bellingham, WA 98225 USA

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2004年 / 521卷 / 2-3期

关键词：

light injection; calibration; LED; PMT; MINOS;

D O I：

10.1016/j.nima.2003.10.105

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

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. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：361 / 366

页数：6

共 6 条

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