Improvement in Fast Particle Track Reconstruction with Robust Statistics
Abstract
The IceCube project has transformed one cubic kilometer of deep natural Antarctic ice into a Cherenkov detector. Muon neutrinos are detected and their direction inferred by mapping the light produced by the secondary muon track inside the volume instrumented with photomultipliers. Reconstructing the muon track from the observed light is challenging due to noise, light scattering in the ice medium, and the possibility of simultaneously having multiple muons inside the detector, resulting from the large flux of cosmic ray muons. This manuscript describes work on two problems: (1) the track reconstruction problem, in which, given a set of observations, the goal is to recover the track of a muon; and (2) the coincident event problem, which is to determine how many muons are active in the detector during a time window. Rather than solving these problems by developing more complex physical models that are applied at later stages of the analysis, our approach is to augment the detectors early reconstruction with data filters and robust statistical techniques. These can be implemented at the level of on-line reconstruction and, therefore, improve all subsequent reconstructions. Using the metric of median angular resolution, a standard metric for track reconstruction, we improve the accuracy in the initial reconstruction direction by 13%. We also present improvements in measuring the number of muons in coincident events: we can accurately determine the number of muons 98% of the time.
Cite
@article{arxiv.1308.5501,
title = {Improvement in Fast Particle Track Reconstruction with Robust Statistics},
author = {M. G. Aartsen and R. Abbasi and Y. Abdou and M. Ackermann and J. Adams and J. A. Aguilar and M. Ahlers and D. Altmann and J. Auffenberg and X. Bai and M. Baker and S. W. Barwick and V. Baum and R. Bay and J. J. Beatty and S. Bechet and J. Becker Tjus and K. -H. Becker and M. L. Benabderrahmane and S. BenZvi and P. Berghaus and D. Berley and E. Bernardini and A. Bernhard and D. Z. Besson and G. Binder and D. Bindig and M. Bissok and E. Blaufuss and J. Blumenthal and D. J. Boersma and S. Bohaichuk and C. Bohm and D. Bose and S. Böser and O. Botner and L. Brayeur and H. -P. Bretz and A. M. Brown and R. Bruijn and J. Brunner and M. Carson and J. Casey and M. Casier and D. Chirkin and A. Christov and B. Christy and K. Clark and F. Clevermann and S. Coenders and S. Cohen and D. F. Cowen and A. H. Cruz Silva and M. Danninger and J. Daughhetee and J. C. Davis and M. Day and C. De Clercq and S. De Ridder and P. Desiati and K. D. de Vries and M. de With and T. DeYoung and J. C. Díaz-Vélez and M. Dunkman and R. Eagan and B. Eberhardt and J. Eisch and S. Euler and P. A. Evenson and O. Fadiran and A. R. Fazely and A. Fedynitch and J. Feintzeig and T. Feusels and K. Filimonov and C. Finley and T. Fischer-Wasels and S. Flis and A. Franckowiak and K. Frantzen and T. Fuchs and T. K. Gaisser and J. Gallagher and L. Gerhardt and L. Gladstone and T. Glüsenkamp and A. Goldschmidt and G. Golup and J. G. Gonzalez and J. A. Goodman and D. Góra and D. T. Grandmont and D. Grant and A. Groß and C. Ha and A. Haj Ismail and P. Hallen and A. Hallgren and F. Halzen and K. Hanson and D. Heereman and D. Heinen and K. Helbing and R. Hellauer and S. Hickford and G. C. Hill and K. D. Hoffman and R. Hoffmann and A. Homeier and K. Hoshina and W. Huelsnitz and P. O. Hulth and K. Hultqvist and S. Hussain and A. Ishihara and E. Jacobi and J. Jacobsen and K. Jagielski and G. S. Japaridze and K. Jero and O. Jlelati and B. Kaminsky and A. Kappes and T. Karg and A. Karle and J. L. Kelley and J. Kiryluk and J. Kläs and S. R. Klein and J. -H. Köhne and G. Kohnen and H. Kolanoski and L. Köpke and C. Kopper and S. Kopper and D. J. Koskinen and M. Kowalski and M. Krasberg and K. Krings and G. Kroll and J. Kunnen and N. Kurahashi and T. Kuwabara and M. Labare and H. Landsman and M. J. Larson and M. Lesiak-Bzdak and M. Leuermann and J. Leute and J. Lünemann and O. Macías and J. Madsen and G. Maggi and R. Maruyama and K. Mase and H. S. Matis and F. McNally and K. Meagher and M. Merck and T. Meures and S. Miarecki and E. Middell and N. Milke and J. Miller and L. Mohrmann and T. Montaruli and R. Morse and R. Nahnhauer and U. Naumann and H. Niederhausen and S. C. Nowicki and D. R. Nygren and A. Obertacke and S. Odrowski and A. Olivas and A. Omairat and A. O'Murchadha and L. Paul and J. A. Pepper and C. Pérez de los Heros and C. Pfendner and D. Pieloth and E. Pinat and J. Posselt and P. B. Price and G. T. Przybylski and L. Rädel and M. Rameez and K. Rawlins and C. Ré and B. Recht and P. Redl and R. Reimann and E. Resconi and W. Rhode and M. Ribordy and M. Richman and B. Riedel and J. P. Rodrigues and C. Rott and T. Ruhe and B. Ruzybayev and D. Ryckbosch and S. M. Saba and T. Salameh and H. -G. Sander and M. Santander and S. Sarkar and K. Schatto and F. Scheriau and T. Schmidt and M. Schmitz and S. Schoenen and S. Schöneberg and A. Schönwald and A. Schukraft and L. Schulte and O. Schulz and D. Seckel and Y. Sestayo and S. Seunarine and R. Shanidze and C. Sheremata and M. W. E. Smith and D. Soldin and G. M. Spiczak and C. Spiering and M. Stamatikos and T. Stanev and N. A. Stanisha and A. Stasik and T. Stezelberger and R. G. Stokstad and A. Stößl and E. A. Strahler and R. Ström and G. W. Sullivan and H. Taavola and I. Taboada and A. Tamburro and A. Tepe and S. Ter-Antonyan and G. Tešić and S. Tilav and P. A. Toale and S. Toscano and E. Unger and M. Usner and S. Vallecorsa and N. van Eijndhoven and A. Van Overloop and J. van Santen and M. Vehring and M. Voge and M. Vraeghe and C. Walck and T. Waldenmaier and M. Wallraff and Ch. Weaver and M. Wellons and C. Wendt and S. Westerhoff and N. Whitehorn and K. Wiebe and C. H. Wiebusch and D. R. Williams and H. Wissing and M. Wolf and T. R. Wood and K. Woschnagg and D. L. Xu and X. W. Xu and J. P. Yanez and G. Yodh and S. Yoshida and P. Zarzhitsky and J. Ziemann and S. Zierke and M. Zoll},
journal= {arXiv preprint arXiv:1308.5501},
year = {2016}
}
Comments
14 pages, 4 figures, submitted to Nuclear Instruments and Methods in Physics Research Section A