Workshop on Materials for Collimators and Beam Absorbers

Accelerometer and microphone measurements of the LHC collimator

4 Sept 2007, 14:30

20m

40-S2-D01 (CERN)

Accelerometer and microphone measurements Session 3: Experimental results and future tests / test station

Speaker

Stefano REDAELLI (CERN)

Description

Sound and vibration measurements of the LHC collimator were performed with various accelerometers and a microphone during collimator robustness tests in 2004 and 2006. The collimator jaws were hit by 450 GeV protons beam of up to 3.5x10e13, equivalent to a total energy of about 2.4 MJ (0.65% of the nominal LHC beam at 7 TeV). It was demonstrated that these measurements can be used to detect beam impacts of LHC beams on the collimators and hence possibly damaged collimators. In this talk the experimental layout is presented and detailed frequency analysis of the measured vibration signals are presented.

Presentation materials

Slides

SR_MaterWS_2007-09-03.pdf