Operational experience with CMS Tier-2 sites

Radiation experience with the CMS pixel detector

The CMS pixel detector is the innermost component of the CMS tracker occupying the region around the centre of CMS, where the LHC beams are crossed, between 4.3 cm and 30 cm in radius and 46.5 cm along the beam axis. It operates in a high-occupancy and high-radiation environment created by particle collisions. Studies of radiation damage effects to the sensors were performed throughout the firs...

Experience with CMS pixel software commissioning

The CMS Pixel detector, consisting of three barrel layers and two endcap disks at each barrel end, was installed in the CMS experiment in summer 2008. After a preliminary commissioning phase with pulse injections the detector participated to data taking with cosmic ray trigger and 3.8T field. In this article, we describe the software for event reconstruction, as well as the status of the calibr...

Operational experience with the ALICE Pixel Detector

The ALICE Silicon Pixel Detector (SPD) constitutes the innermost detector of the ALICE experiment, which is the LHC experiment dedicated to the investigation of strongly interacting matter in heavy-ion collisions. The SPD consists of ∼10 million pixels organized in two layers at radii of 39 mm and 76 mm that cover a pseudorapidity range of |η |< 2 and |η |< 1.4, respectively. It provides the po...

Experience with an Operational Associative Processor

Operational Experience with the CEBAF Control System

The CEBAF accelerator at Thomas Jefferson National Accelerator Facility (Jefferson Lab) successfully began its experimental nuclear physics program in November of 1995 and has since surpassed predicted machine availability. Part of this success can be attributed to using the EPICS (Experimental Physics and Industrial Control System) control system toolkit. The CEBAF control system is one of the...