Reconstruction of Nearly Horizontal Muons in the HAWC Observatory

the HAWC Collaboration

Reconstruction of Nearly Horizontal Muons in the HAWC Observatory

the HAWC Collaboration

Departamento de Física y Matemáticas

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

The volcanoes surrounding the HAWC observatory provide varying material depths from open sky to over 15 km of rock for nearly horizontal muon trajectories. The muon integral intensity as a function of material depth may be determined from the rate of muons as a function of arrival direction near the horizon. A Hough transform algorithm is used to identify nearly-horizontal muons traversing the HAWC observatory by finding a line in the 3d point cloud of PMT hits (xi,yi, and cti). The arrival direction of the muon can be estimated from this line. Background Extensive Air Shower (EAS) fragments are identified by the presence of a lateral extension of PMT hits in a plane normal to the muon candidate trajectory. A geometry-based simulation has been developed to improve and estimate arrival direction reconstruction resolution and effective area. A description of the reconstruction techniques and estimates of detector resolution, backgrounds, and effective area as a function of arrival direction, will be provided.

Original language	English
Title of host publication	Reconstruction of Nearly Horizontal Muons in the HAWC Observatory
Volume	395
Publication status	Published - 18 Mar 2022
Event	37th International Cosmic Ray Conference, ICRC 2021 - Virtual, Berlin, Germany Duration: 12 Jul 2021 → 23 Jul 2021

Publication series

Name	Proceedings of Science
Publisher	Sissa Medialab Srl

Conference

Conference	37th International Cosmic Ray Conference, ICRC 2021
Country/Territory	Germany
City	Virtual, Berlin
Period	12/7/21 → 23/7/21

Bibliographical note

Publisher Copyright:
© Copyright owned by the author(s).

All Science Journal Classification (ASJC) codes

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Cite this

@inproceedings{33778d098d1c489099bfcc0e8dc6a35d,

title = "Reconstruction of Nearly Horizontal Muons in the HAWC Observatory",

abstract = "The volcanoes surrounding the HAWC observatory provide varying material depths from open sky to over 15 km of rock for nearly horizontal muon trajectories. The muon integral intensity as a function of material depth may be determined from the rate of muons as a function of arrival direction near the horizon. A Hough transform algorithm is used to identify nearly-horizontal muons traversing the HAWC observatory by finding a line in the 3d point cloud of PMT hits (xi,yi, and cti). The arrival direction of the muon can be estimated from this line. Background Extensive Air Shower (EAS) fragments are identified by the presence of a lateral extension of PMT hits in a plane normal to the muon candidate trajectory. A geometry-based simulation has been developed to improve and estimate arrival direction reconstruction resolution and effective area. A description of the reconstruction techniques and estimates of detector resolution, backgrounds, and effective area as a function of arrival direction, will be provided.",

author = "{the HAWC Collaboration} and Barber, {Ahron S.} and Kieda, {David B.} and {Wayne Springer}, R. and Abeysekara, {A. U.} and A. Albert and R. Alfaro and C. Alvarez and {\'A}lvarez, {J. D.} and {Angeles Camacho}, {J. R.} and Arteaga-Vel{\'a}zquez, {J. C.} and Arunbabu, {K. P.} and {Avila Rojas}, D. and {Ayala Solares}, {H. A.} and R. Babu and V. Baghmanyan and Barber, {A. S.} and {Becerra Gonzalez}, J. and E. Belmont-Moreno and BenZvi, {S. Y.} and D. Berley and C. Brisbois and Caballero-Mora, {K. S.} and T. Capistr{\'a}n and A. Carrami{\~n}ana and S. Casanova and O. Chaparro-Amaro and U. Cotti and J. Cotzomi and {Couti{\~n}o de Le{\'o}n}, S. and {De la Fuente}, E. and {de Le{\'o}n}, C. and L. Diaz-Cruz and {Diaz Hernandez}, R. and D{\'i}az-V{\'e}lez, {J. C.} and Dingus, {B. L.} and M. Durocher and DuVernois, {M. A.} and Ellsworth, {R. W.} and K. Engel and C. Espinoza and Fan, {K. L.} and K. Fang and {Fern{\'a}ndez Alonso}, M. and B. Fick and H. Fleischhack and Flores, {J. L.} and Fraija, {N. I.} and D. Garcia and Garc{\'i}a-Gonz{\'a}lez, {J. A.} and H. Mart{\'i}nez-Huerta",

note = "Publisher Copyright: {\textcopyright} Copyright owned by the author(s).; 37th International Cosmic Ray Conference, ICRC 2021 ; Conference date: 12-07-2021 Through 23-07-2021",

year = "2022",

month = mar,

day = "18",

language = "English",

volume = "395",

series = "Proceedings of Science",

publisher = "Sissa Medialab Srl",

booktitle = "Reconstruction of Nearly Horizontal Muons in the HAWC Observatory",

}

TY - GEN

T1 - Reconstruction of Nearly Horizontal Muons in the HAWC Observatory

AU - the HAWC Collaboration

AU - Barber, Ahron S.

AU - Kieda, David B.

AU - Wayne Springer, R.

AU - Abeysekara, A. U.

AU - Albert, A.

AU - Alfaro, R.

AU - Alvarez, C.

AU - Álvarez, J. D.

AU - Angeles Camacho, J. R.

AU - Arteaga-Velázquez, J. C.

AU - Arunbabu, K. P.

AU - Avila Rojas, D.

AU - Ayala Solares, H. A.

AU - Babu, R.

AU - Baghmanyan, V.

AU - Barber, A. S.

AU - Becerra Gonzalez, J.

AU - Belmont-Moreno, E.

AU - BenZvi, S. Y.

AU - Berley, D.

AU - Brisbois, C.

AU - Caballero-Mora, K. S.

AU - Capistrán, T.

AU - Carramiñana, A.

AU - Casanova, S.

AU - Chaparro-Amaro, O.

AU - Cotti, U.

AU - Cotzomi, J.

AU - Coutiño de León, S.

AU - De la Fuente, E.

AU - de León, C.

AU - Diaz-Cruz, L.

AU - Diaz Hernandez, R.

AU - Díaz-Vélez, J. C.

AU - Dingus, B. L.

AU - Durocher, M.

AU - DuVernois, M. A.

AU - Ellsworth, R. W.

AU - Engel, K.

AU - Espinoza, C.

AU - Fan, K. L.

AU - Fang, K.

AU - Fernández Alonso, M.

AU - Fick, B.

AU - Fleischhack, H.

AU - Flores, J. L.

AU - Fraija, N. I.

AU - Garcia, D.

AU - García-González, J. A.

AU - Martínez-Huerta, H.

PY - 2022/3/18

Y1 - 2022/3/18

N2 - The volcanoes surrounding the HAWC observatory provide varying material depths from open sky to over 15 km of rock for nearly horizontal muon trajectories. The muon integral intensity as a function of material depth may be determined from the rate of muons as a function of arrival direction near the horizon. A Hough transform algorithm is used to identify nearly-horizontal muons traversing the HAWC observatory by finding a line in the 3d point cloud of PMT hits (xi,yi, and cti). The arrival direction of the muon can be estimated from this line. Background Extensive Air Shower (EAS) fragments are identified by the presence of a lateral extension of PMT hits in a plane normal to the muon candidate trajectory. A geometry-based simulation has been developed to improve and estimate arrival direction reconstruction resolution and effective area. A description of the reconstruction techniques and estimates of detector resolution, backgrounds, and effective area as a function of arrival direction, will be provided.

AB - The volcanoes surrounding the HAWC observatory provide varying material depths from open sky to over 15 km of rock for nearly horizontal muon trajectories. The muon integral intensity as a function of material depth may be determined from the rate of muons as a function of arrival direction near the horizon. A Hough transform algorithm is used to identify nearly-horizontal muons traversing the HAWC observatory by finding a line in the 3d point cloud of PMT hits (xi,yi, and cti). The arrival direction of the muon can be estimated from this line. Background Extensive Air Shower (EAS) fragments are identified by the presence of a lateral extension of PMT hits in a plane normal to the muon candidate trajectory. A geometry-based simulation has been developed to improve and estimate arrival direction reconstruction resolution and effective area. A description of the reconstruction techniques and estimates of detector resolution, backgrounds, and effective area as a function of arrival direction, will be provided.

UR - http://www.scopus.com/inward/record.url?scp=85144350262&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85144350262&partnerID=8YFLogxK

M3 - Conference contribution

AN - SCOPUS:85144350262

VL - 395

T3 - Proceedings of Science

BT - Reconstruction of Nearly Horizontal Muons in the HAWC Observatory

T2 - 37th International Cosmic Ray Conference, ICRC 2021

Y2 - 12 July 2021 through 23 July 2021

ER -

Reconstruction of Nearly Horizontal Muons in the HAWC Observatory

Abstract

Publication series

Conference

Bibliographical note

All Science Journal Classification (ASJC) codes

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