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Implementation of TDR Algorithms at Imperial College London: Clustering, Jets, and Ring Sums

This report details the implementation of Time-Domain Reflectometry (TDR) algorithms at Imperial College London, focusing on clustering, jets, and ring sums. The various clustering algorithms utilized in TMT integration tests have shown that random data processed through emulators provided accurate results, aligning with hardware measurements. The comprehensive test suites for jets and ring sums further validated the performance of these algorithms. Insights gained from testing random data are critical for enhancing algorithm robustness, all while operating at 250 MHz.

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Implementation of TDR Algorithms at Imperial College London: Clustering, Jets, and Ring Sums

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  1. TDR algorithm implementation Andrew Rose – Imperial College London

  2. Status • Nothing has changed since the integration test • (Pesky things like the EDR getting in the way) Imperial College London

  3. TMT algorithms - Clusters Many algorithms available, each with comprehensive test suite Subset of algorithms were used in TMT integration tests †Excluded to increase statistics for validation Imperial College London

  4. Clusters Towers 2×1 clusters 2×2 clusters Cluster classifier Cluster sort in φ Cluster sort in η Imperial College London

  5. Results - Clusters • Random data passed through an emulator was used in the testing of the algorithms Clustering algorithm (2x2) Optical Fibre Time-multiplexed Data injected into PP Sort Capture Compared emulated results (solid line) with those from the MP7 (markers) C++ emulator and hardware match precisely Imperial College London

  6. TMT algorithms - Jets Many algorithms available, each with comprehensive test suite Subset of algorithms were used in TMT integration tests †Excluded to increase statistics for validation Imperial College London

  7. Jets Towers 2×1 strip 4×1 strip 6×1 strip 8×1 strip Strip accumulator Jet sort in φ Jet sort in η Imperial College London

  8. Results - Jets • Random data passed through an emulator was used in the testing of the algorithms Circle jet algorithm (8x8) Optical Fibre Time-multiplexed Data injected into PP Sort Capture Compared emulated results (solid line) with those from the MP7 (markers) C++ emulator and hardware match precisely Imperial College London

  9. TMT algorithms - Ring sums Many algorithms available, each with comprehensive test suite Subset of algorithms were used in TMT integration tests Imperial College London

  10. Ring sums Towers Vector components 3×1 strip 9×1 strip 18×1 strip 36×1 strip 72×1 strip Strip accumulator Imperial College London

  11. Results – Ring Sums • Random data passed through an emulator was used in the testing of the algorithms Optical Fibre Time-multiplexed Data injected into PP Ring sums Sort Capture Compared emulated results (solid line) with those from the MP7 (markers) C++ emulator and hardware match precisely Imperial College London

  12. Dominated by sort Input Ring sums Clusters Jets Algorithms are running at 250MHz Imperial College London

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