LIGO Document T1200399-v1

Consequences of the LLO beamtube leak and strategies to deal with them

Document #:
LIGO-T1200399-v1
Document type:
T - Technical notes
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Abstract:
The note describes the evolution of the water pressure in the beamtube with time after the leak has been fixed for a variety of pumping and low temperature bake strategies. The impact of the leak is not as severe as first thought on advanced LIGO. Enough margin for h(f) can be attained with simple steps but more significant steps will need to be taken to achieve the goal performance of LIGO
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