The Calibration Manager: a Web Interface for Monitoring the D0 Pre-shower Calibration Database Authors: Jeremy Herr (herrj@umich.edu) - developer and primary contact person Homer Neal (haneal@umich.edu) - initial concept design Eric Myers (myers@vassar.edu) - assisted throughout development In the D0 experiment at Fermilab, each subdetector provides a means for collecting calibration information. It is useful for physicists concerned with calibration issues to know the value of pedestals, mips and gains of each channel and each run. For the Central Pre-shower subdetector, a database has been designed to store calibration data, which will be described in detail in a separate document. The Calibration Manager is an application designed to provide web-based access to the Central Pre-shower calibration database, and because of its flexibility, may also be used for other subdetectors' calibration databases. See it in action at http://circe.physics.lsa.umich.edu Search for this note at http://www-d0.fnal.gov/cgi-bin/d0note?4052