Speaker
Irena Dolenc
(Jozef Stefan Inst. Ljubljana)
Description
In order to monitor beam conditions and detect signs of beam instabilities
which could cause damage to their detectors, LHC experiments have decided
to develop their own systems in addition to those provided by the
accelerator. ATLAS Beam Conditions Monitor (BCM) will consist of eight
detector modules with diamond pad sensors, placed symmetrically around
the interaction point along the beam axis at z = ±183.8 cm. By use of fast
electronics, timeof-flight measurements will provide unique distinction
between normal beam events of colliding protons and anomalous events
which induce background (e.g. beam interactions with residual gas) and
could in worst case damage the ATLAS detector (e.g. several bunches hitting
the beam collimator upstream the detector). Additionally BCM modules will
be used to measure the interaction rate providing an estimation of LHC
luminosity in ATLAS. Final modules are now being assembled and subjected
to tests before their installation onto the ATLAS Beam Pipe Support
Structure in December 2006. The results of these tests and the design of
final modules will be presented.
Author
Irena Dolenc
(Jozef Stefan Inst. Ljubljana)
