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in creator/contributor: "Kowalski, L. A."

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Calibration and performance of the MARK II drift chamber vertex detector

We have calibrated and studied the performance of the MARK II drift chamber vertex detector with cosmic ray tracks collected with the chamber inside the MARK II detector at the SLC. The chamber achieves 30 {mu}m impact parameter resolution and 500 {mu}m track-pair resolution using CO{sub 2}/C{sub 2}H{sub 6}H{sub 6}(92/8) at 2 atmospheres pressure. The chamber has successfully recorded Z{sup 0} decays at the SLC, and resolved tracks in dense hadronic jets with good efficiency and high accuracy. … more

Date: May 1, 1990

Creator: Durrett, D.; Ford, W. T.; Hinshaw, D. A.; Rankin, P.; Smith, J. G.; Weber, P. et al.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

The Mark II Vertex Drift Chamber

We have completed constructing and begun operating the Mark II Drift Chamber Vertex Detector. The chamber, based on a modified jet cell design, achieves 30 {mu}m spatial resolution and <1000 {mu}m track-pair resolution in pressurized CO{sub 2} gas mixtures. Special emphasis has been placed on controlling systematic errors including the use of novel construction techniques which permit accurate wire placement. Chamber performance has been studied with cosmic ray tracks collected with the chamber… more

Date: March 1, 1989

Creator: Alexander, J. P.; Baggs, R.; Fujino, D.; Hayes, K.; Hoard, C.; Hower, N. et al.