more on TOF

[Alex Dzierba <dzierba@indiana.edu>]

Title: more on TOF

Dear Colleagues

Sergey Denisov and I would like to point to our published papers listed at the bottom of this message.

Results, including the dependence of time resolution on scint. thickness (more precisely on the number of photoelectrons:1/sqrt(N)) can be found in our papers. Lightpipes do not deteriorate time resolution and can be useful if magntic shiedings are used. According to our data the time resolution of about 60ps can be achieved with X,Y hodoscope with 1 inch thick scintillators.

Also, results indicate that it is better to use ADC's instead CFD's and to correct walk-effect offline. See our papers.

Alex

Papers:

1.  A study of the time and amplitude characteristics of the scintillation counter two meters long with Phi E Y - 115M photomultiplier tubes.
Published in Instrum.Exp.Tech.49:494-501,2006, Prib.Tekh.Eksp.49:50-57,2006.

2.  Systematic studies of timing characteristics for 2-m long scintillation counters.
Published in Nucl.Instrum.Meth.A525:183-187,2004.

3.  Characteristics of the TOF counters for GlueX experiment.
Published in Nucl.Instrum.Meth.A494:495-499,2002.

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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Alex R. Dzierba
Chancellor's Professor of Physics (Emeritus)
Department of Physics / Indiana U / Bloomington IN 47405 / 812-855-9421
JLab Visiting Fellow
Jefferson Lab / 12000 Jefferson Ave / Newport News, VA 23606 / 757-269-7577
Home Phone: 812-825-4063  Cell:  812-327-1881  Fax: 866-541-1263
http://dustbunny.physics.indiana.edu/~dzierba/
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~