Operational Experience with the CMS Pixel Detector

TL;DR

This paper discusses the operational challenges, calibration procedures, and performance results of the CMS pixel detector during the first LHC run, highlighting its high efficiency and adaptability.

Contribution

It provides a detailed account of the operational experience and challenges faced by the CMS pixel detector, including calibration strategies and performance metrics during initial LHC operation.

Findings

Hit efficiency above 99% across all layers

Successful calibration procedures maintained high data quality

Operational challenges were effectively managed during the run

Abstract

In the first LHC running period the CMS-pixel detector had to face various operational challenges and had to adapt to the rapidly changing beam conditions. In order to maximize the physics potential and the quality of the data, online and offline calibrations were performed on a regular basis. The detector performed excellently with an average hit efficiency above 99% for all layers and disks. In this contribution the operational challenges of the silicon pixel detector in the first LHC run and the current long shutdown are summarized and the expectations for 2015 are discussed.