Operational experience, improvements, and performance of the CDF Run II silicon vertex detector
Abstract
The Collider Detector at Fermilab (CDF) pursues a broad physics program at Fermilab's Tevatron collider. Between Run II commissioning in early 2001 and the end of operations in September 2011, the Tevatron delivered 12 fb-1 of integrated luminosity of p-pbar collisions at sqrt(s)=1.96 TeV. Many physics analyses undertaken by CDF require heavy flavor tagging with large charged particle tracking acceptance. To realize these goals, in 2001 CDF installed eight layers of silicon microstrip detectors around its interaction region. These detectors were designed for 2--5 years of operation, radiation doses up to 2 Mrad (0.02 Gy), and were expected to be replaced in 2004. The sensors were not replaced, and the Tevatron run was extended for several years beyond its design, exposing the sensors and electronics to much higher radiation doses than anticipated. In this paper we describe the operational challenges encountered over the past 10 years of running the CDF silicon detectors, the preventive measures undertaken, and the improvements made along the way to ensure their optimal performance for collecting high quality physics data. In addition, we describe the quantities and methods used to monitor radiation damage in the sensors for optimal performance and summarize the detector performance quantities important to CDF's physics program, including vertex resolution, heavy flavor tagging, and silicon vertex trigger performance.
Keywords
Cite
@article{arxiv.1301.3180,
title = {Operational experience, improvements, and performance of the CDF Run II silicon vertex detector},
author = {T. Aaltonen and S. Behari and A. Boveia and B. Brau and G. Bolla and D. Bortoletto and C. Calancha and S. Carron and S. Cihangir and M. Corbo and D. Clark and B. Di Ruzza and R. Eusebi and J. P. Fernandez and J. C. Freeman and J. E. Garcia and M. Garcia-Sciveres and D. Glenzinski and O. Gonzalez and S. Grinstein and M. Hartz and M. Herndon and C. Hill and A. Hocker and U. Husemann and J. Incandela and C. Issever and S. Jindariani and T. R. Junk and K. Knoepfel and J. D. Lewis and R. S. Lu and R. Martinez and M. Mathis and M. Mattson and P. Merkel and L. Miller and A. Mitra and M. N. Mondragon and R. Moore and J. R. Mumford and S. Nahn and J. Nielsen and T. K. Nelson and V. Pavlicek and J. Pursley and I. Redondo and R. Roser and K. Schultz and J. Slaughter and J. Spalding and M. Stancari and M. Stanitzki and D. Stuart and A. Sukhanov and R. Tesarek and K. Treptow and R. Wallny and P. Wilson and S. Worm},
journal= {arXiv preprint arXiv:1301.3180},
year = {2015}
}
Comments
Preprint accepted for publication in Nuclear Instruments and Methods A (07/31/2013)