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Title: The charge management system for LISA and LISA Pathfinder
Author: Hollington, Daniel
ISNI:       0000 0004 2706 7846
Awarding Body: Imperial College London
Current Institution: Imperial College London
Date of Award: 2011
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The test masses at the heart of the Laser Interferometer Space Antenna (LISA) and LISA: Pathfinder experiments will experience charging caused by incident ionising radiation. This thesis describes work carried out in developing, testing and understanding the performance of the hardware used to characterise and counteract this test mass charging. Work will be presented that describes the simulation and testing of a radiation monitor to be flown on board Pathfinder. The Charge Management System will then be introduced and the results from testing at the Trento torsion pendulum facility discussed. Several measurements of individual properties that affect discharging are made and these are then incorporated into simulations of the discharging system as a whole. Finally, initial studies are conducted into the suitability of UV-LEDs as the discharging light source for LISA, with particular focus on their spectral stability.
Supervisor: Sumner, Timothy Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral