Internal notes are accessible to CDF collaborators but can be made available on request.
|June 15, 2005||CDF Note 7693||Deformations of the Scintillator in the Time-of-Flight System|
|May 2, 2005||CDF Note 7620||Sources of Bias in Time-of-Flight Measurements|
|March 24, 2004||CDF Note 6948||TOF Calibration Studies|
Electronics for the TOF detector was designed and built while I was at the University of Pennsylvania. Components of the clock distribution system have been built at Purdue.
Niharika Ranjan working on TOF electronics maintenance during the Tevatron's spring 2006 shutdown.
|Jan 18, 2005||TOF Clock Distribution||(pdf, ppt)|
|Jan 31, 2005||Electronics Simulation in the Photon Transport Monte Carlo||(pdf, ppt)|
We have developed a Monte Carlo model that simulations the propagation of photons through the TOF detector and the response of the electronics. This has been used to study possible sources of bias observed in some classes of measurements.
|Sept 27, 2004||Photon Transport Monte Carlo (1)||(pdf, ppt)|
|Nov 29, 2004||Photon Transport Monte Carlo (2)||(pdf, ppt)|
|Dec 13, 2004||Photon Transport Monte Carlo (3)||(pdf, ppt)|
|Jan 31, 2005||Photon Transport Monte Carlo (4)||(pdf, ppt)|
|May 9, 2005||Photon Transport Monte Carlo (5)||(pdf, ppt)|
|We are determining new alignment constants for the TOF scintillator and find that deviations from the previously determined positions can be significant. This picture shows the difference between the new (blue/yellow) and the previously assumed (red) position of the scintillator. Radial shifts of order 1 cm are expected to have singificant implications for calibration and reconstruction.|
|June 20, 2005||TOF Alignment Studies (1)||(pdf, ppt)|
|The performance of the TOF system appears to be degrading with time. We are in the process of analysing the contributing factors and proposing various options for dealing with these issues.|
|April 6, 2006||TOF Aging Issues(1)||(pdf, ppt)||Longer version with details|
|April 6, 2006||TOF Aging Issues(2)||(pdf, ppt)||Shorter summary|
|May 24, 2006||TOF Aging Issues(3)||(pdf, ppt)||PMT Aging discussion|