A wire tension meter has been developed for the multi-wire proportional chambers of the LHCb muon detector. The wire tension is deduced from its mechanical resonance frequency. In the LHCb muon chambers. the wires are 2 mm apart and electrically connected in groups of 3-32, so that the wire excitation system must he precisely positioned with respect to the wire to be tested. This wire is forced to oscillate by it periodic high voltage applied between that wire and it non-oscillating "sense wire" placed parallel and close to it. This oscillation produces it variation of the capacitance between these two wires which is measured by a high precision digital electronic circuit. At the resonance frequency this capacitance variation is maximum. The system has been systematically investigated and its parameters were optimized. In the range 0.4-1 N a good agreement is found between the mechanical tension measured by this system and by a dynamometer. (c) 2005 Elsevier B.V. All rights reserved.
Automated wire tension measurement system for LHCb muon chambers RID B-4806-2009 / P., Ciambrone; E., Dane; R., Dumps; M., Dwuznik; G., Felici; C., Forti; A., Frenkel; J. S., Graulich; A., Kachtchouk; V. V., Kulikov; G., Martellotti; A., Medvedkov; A. A., Nedosekin; Penso, Gianni; D., Pinci; G., Pirozzi; B., Schmidt; V., Shubin. - In: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH. SECTION A, ACCELERATORS, SPECTROMETERS, DETECTORS AND ASSOCIATED EQUIPMENT. - ISSN 0168-9002. - 545:(2005), pp. 156-163. [10.1016/j.nima.2004.12.039]
Automated wire tension measurement system for LHCb muon chambers RID B-4806-2009
PENSO, Gianni;
2005
Abstract
A wire tension meter has been developed for the multi-wire proportional chambers of the LHCb muon detector. The wire tension is deduced from its mechanical resonance frequency. In the LHCb muon chambers. the wires are 2 mm apart and electrically connected in groups of 3-32, so that the wire excitation system must he precisely positioned with respect to the wire to be tested. This wire is forced to oscillate by it periodic high voltage applied between that wire and it non-oscillating "sense wire" placed parallel and close to it. This oscillation produces it variation of the capacitance between these two wires which is measured by a high precision digital electronic circuit. At the resonance frequency this capacitance variation is maximum. The system has been systematically investigated and its parameters were optimized. In the range 0.4-1 N a good agreement is found between the mechanical tension measured by this system and by a dynamometer. (c) 2005 Elsevier B.V. All rights reserved.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
