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LARGE HADRON COLLIDER SPECIFIES ACTIVE SENSORS LINEAR MEASUREMENT TRANSDUCERS FOR CMS PROJECT

1st May 2009

The European Organization for Nuclear Research, known as CERN is the largest particle physics laboratory in the world and is situated in Geneva, Switzerland. CERN's main function is to provide the particle accelerators and other infrastructure needed for high-energy physics research. The CMS (Compact Muon Solenoid ) experiment uses a general-purpose detector to investigate a wide range of physics, including the search for particles that could make up dark matter. The CMS detector is built around a huge solenoid magnet in the the form of a cylindrical coil of superconducting cable that can generate a magnetic field of 4 Teslas (100,000 times greater than that of the Earth). The CERN CMS is: 21 m long, 15 m wide and 15 m high and weights12 500 tons. CERN scientists needed to accurateley monitor positionional movements around the solenoid. To do this they placed up to 26 short stoke position sensors at various locations around the CMS detector.

The CLS1313-30mm sprung loaded linear potentiometer from Active Sensors was specified. Andromachi Tsirou, a scientist on the CMS project commented “the CLS1313 sensors are working comfortably on the fringe of central magnetic field of 3.8T and they are probably in the kGauss area”. They added, “We are very pleased with the sensor performance and the information we are obtaining”. To learn more about CERN please visit: www.cern.ch

Active Sensors is a leading designer of high performance rotary and linear position sensors for motion control and measurement systems. Active Sensors specialise in contactless and contacting technology providing sensor specifications of the highest quality and accuracy. The company is strategically placed in Europe and North America to serve its customers worldwide.

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