[NEW]Comissionning Issues [NEW]
Track Fitting: Hardware Design
Track Fitting: Algorithm and Design Studies
Miscellaneous Information (incl. beam position)
Hotlink Transmitter/Receiver
Vendor Documentation

Track Fitting: Hardware Design Information (and a glossary)

Track Fitting: Studies

Comparisons of hit assignment techniques (road center, all combinations, ...) and first pass timing estimates: Complete note (pg. 1-58), Body and main figures (pg. 1-18), Detailed figures (pg. 19-58)

Floating point precision plots. The plots show difference in track parameter between a given (mantissa,exponent) size and true double precision (M53, E11). Results are shown for two formulations of the calculation:

  1. The orignal 3x3 coefficient matrix
  2. The newer 3xN(hit) coefficient matrix

As expected, the 3xN(hit) formulation has superior numerical stability. This comes because the elements of a given row all have the same units.

Hit assignment changes(plots) for 4-layer versus 3-layer tracks. The plots show the number of hits in a 3-layer track which are not assigned to the 4-layer track for the same road. Three algorithms are shown: static road (original), dynamic road(circle), all combinations (tree).

Timing distributions(ps,pdf) for the modified Static Road/3 algorithm for roughly 250 tracks in Z->bb events on a TI 'C67 floating point DSP. No look up tables were used during the calculation.

Commissionning Information

Hotlink Transmitter/Receiver Information

TFC and Hotlink Photos

Chalkboard with logic block diagram (high resolution)
Empty TFC board (high resolution)
Stuffed TFC board (high resolution)
PCI-A region close up (high resolution)
DSP and DC-to-DC converter close up (high resolution)
DC-to-DC converter stage close up (high resolution)
Hotlink board Front and back sides of empty board
Hotlink board Front and back sides of stuffed board

Miscellaneous Topics


Vendor documents

TI dsp documents and Altera programmable logic documents