Readout System for the CMS RPC Muon Trigger
The CMS detector contains the RPC chambersa dedicated trigger subdetectorto identify muons, measure their transverse momenta pT, and determine the bunch crossing from which they originated.The RPC Muon Trigger algorithm is based on muon track search and classification in raw data from the RPC chambers. Large part of the RPC trigger electronics will reside in the control room (approx. 90 meters from the detector) where all trigger data are concentrated. Dedicated synchronous compression decompression algorithm is needed to sent all data for each bunch crossing via optical links. The RPC Readout system uses the same data as Trigger system and will be placed in the Trigger Racks. The idea of readout system and its limitations are discussed below. The paper includes description of prototype boards and tests in the synchronous CERN LHC like test beam H2 in May 2000.
Resistive Plate Chamber (RPC) based muon trigger system for the CMS experiment – data compression/decompression system
Abstract The CMS detector will have a dedicated subdetector (RPC chambers) to identify muons, measure their transverse momenta pt, and determine the bunch crossings from which they originate. The trigger algorithm is based on muon track search and classification in raw data from the RPC chambers grouped in the four muon stations in the CMS magnet yoke. A huge interconnection network is needed to fulfill this task. It can be built in the control room only, approximately 120 m away from the detector. The data compression/decompression system is proposed to reduce the number of links needed to transfer the data from detector to control room. The idea of such a system and results of first tests will be presented.
Application of infrared camera to bituminous concrete pavements: measuring vehicle
Infrared thermography (IR) has been used for decades in certain fields. However, the technological level of advancement of measuring devices has not been sufficient for some applications. Over the recent years, good quality thermal cameras with high resolution and very high thermal sensitivity have started to appear on the market. The development in the field of measuring technologies allowed the use of infrared thermography in new fields and for larger number of users. This article describes the research in progress in Transport Research Centre with a focus on the use of infrared thermography for diagnostics of bituminous road pavements. A measuring vehicle, equipped with a thermal camera, digital camera and GPS sensor, was designed for the diagnostics of pavements. New, highly sensitive, thermal cameras allow to measure very small temperature differences from the moving vehicle. This study shows the potential of a high-speed inspection without lane closures while using IR thermography.