Referenced Items are not available for this document.
A high-speed digital TDC (time-to-digital converter) has been built as part of the Level 0 trigger for the Dφ experiment at Fermilab. The digital TDC is used to make a fast determination of the primary vertex position by timing the arrival times of beam jets detected in the Level 0 counters. The vertex position is then used by the Level 1 trigger to determine the proper sin θ weighting factors for calculating transverse energies. Commercial GaAs integrated circuits are used in the digital TDC to obtain a time resolution of σt=226 ps. The current design is limited to measuring a maximum time difference of ≈100 ns, but it could be easily extended by cascading additional counter stages
Published in:
Nuclear Science, IEEE Transactions on
(Volume:38
,
Issue:
2
)
Date of Publication: Apr 1991
- Page(s):
- 286 - 289
- ISSN :
- 0018-9499
- INSPEC Accession Number:
- 3971024
- Digital Object Identifier :
- 10.1109/23.289311
- Product Type:
- Journals & Magazines
- Date of Current Version :
- 06 August 2002
- Issue Date :
- Apr 1991
- Sponsored by :
- IEEE Nuclear and Plasma Sciences Society
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