Radiation Damage Effects and Operation of the LHCb Vertex Locator

K. Akiba; M. Alexander; W. Barter; L. Bell; G. Bogdanova; S. Borghi; T. Bowcock; E. Buchanan; J. Buytaert; S. De Capua; S. Chen; P. Collins; A. Crocombe; E. Dall'Occo; C. Dean; F. Dettori; K. Dreimanis; G. Dujany; L. Eklund; T. Evans; M. Gersabeck; T. Gershon; T. Hadavizadeh; J. Harrison; K. Hennessy; W. Hulsbergen; D. Hutchcroft; E. Jans; M. John; P. Kopciewicz; P. Koppenburg; G. Lafferty; T. Latham; A. Leflat; M. Majewski; F. Marinho; J. Mylroie-Smith; A. Oblakowska-Mucha; C. Parkes; A. Pearce; A. Poluektov; A. Pritchard; W. Qian; S. Redford; S. Richards; K. Rinnert; E. Rodrigues; P. Rodriguez; M. Schiller; M. Smith; T. Szumlak; M. Van Beuzekom; J. Velthuis; V. Volkov; H. Wark; A. Webber; M. Williams

doi:10.1109/TNS.2018.2824618

Radiation Damage Effects and Operation of the LHCb Vertex Locator

K. Akiba, M. Alexander, W. Barter, L. Bell, G. Bogdanova, S. Borghi, T. Bowcock, E. Buchanan, J. Buytaert, S. De Capua, S. Chen, P. Collins, A. Crocombe, E. Dall'Occo, C. Dean, F. Dettori, K. Dreimanis, G. Dujany, L. Eklund, T. EvansM. Gersabeck, T. Gershon, T. Hadavizadeh, J. Harrison, K. Hennessy, W. Hulsbergen, D. Hutchcroft, E. Jans, M. John, P. Kopciewicz, P. Koppenburg, G. Lafferty, T. Latham, A. Leflat, M. Majewski, F. Marinho, J. Mylroie-Smith, A. Oblakowska-Mucha, C. Parkes, A. Pearce, A. Poluektov, A. Pritchard, W. Qian, S. Redford, S. Richards, K. Rinnert, E. Rodrigues, P. Rodriguez, M. Schiller, M. Smith, T. Szumlak, M. Van Beuzekom, J. Velthuis, V. Volkov, H. Wark, A. Webber, M. Williams

Research output: Contribution to Journal › Article › Academic › peer-review

Abstract

Vertex locator (VELO) is a silicon microstrip detector situated around the interaction point in the large Hadron Collider beauty (LHCb) spectrometer at the Large Hadron Collider. The LHCb experiment is dedicated to studying charge conjugation and parity symmetry violation in the heavy flavor sector and rare decays of B mesons. The precise reconstruction of both the primary and secondary vertices, obtained by the VELO, is crucial in the selection of signal events containing b and c quarks and lifetime measurements. VELO consists of two retractable parts that operate at 8 mm from the interaction region. Its proximity to proton beams makes the LHCb VELO a place for studying radiation damage effects in silicon detectors in proton-proton and heavy-ion collisions. The latest results from radiation damage studies and their impact on the operation of the LHCb VELO after the first data-taking period (Run I) and the ongoing Run II are presented in this paper. The main macroscopic parameters, influenced by particle fluence, are described along with selected methods of their monitoring. All the results show that VELO sustains the impact of high fluence of radiation, and its performance will not change significantly until the end of Run II.

Original language	English
Pages (from-to)	1127-1132
Journal	IEEE Transactions on Nuclear Science
Volume	65
Issue number	5
DOIs	https://doi.org/10.1109/TNS.2018.2824618
Publication status	Published - 1 May 2018
Externally published	Yes

Funding

Manuscript received March 8, 2018; accepted April 3, 2018. Date of publication April 10, 2018; date of current version May 16, 2018. This work was supported in part by the National Research Center, Poland under Grant UMO-2016 /21/B/ST2/01083 and in part by the Faculty of Physics and Applied Computer Science AGH UST statutory tasks under Grant 11.11.220.01/4 within subsidy of Ministry of Science and Higher Education.

Funders	Funder number
Not added	ST/N000250/1, ST/K003410/1, ST/M001784/1, ST/L003058/1, ST/N000455/1, ST/L003163/1
Faculty of Physics and Applied Computer Science AGH	11.11.220.01/4
Ministry of Science and Higher Education
National Research Center, Poland	UMO-2016 /21/B/ST2/01083
Science and Technology Facilities Council	ST/J004332/1, LHCb Upgrades
Science and Technology Facilities Council

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Akiba, K., Alexander, M., Barter, W., Bell, L., Bogdanova, G., Borghi, S., Bowcock, T., Buchanan, E., Buytaert, J., De Capua, S., Chen, S., Collins, P., Crocombe, A., Dall'Occo, E., Dean, C., Dettori, F., Dreimanis, K., Dujany, G., Eklund, L., ... Williams, M. (2018). Radiation Damage Effects and Operation of the LHCb Vertex Locator. IEEE Transactions on Nuclear Science, 65(5), 1127-1132. https://doi.org/10.1109/TNS.2018.2824618

@article{d9b01bf7c14a49318b516083580a3020,

title = "Radiation Damage Effects and Operation of the LHCb Vertex Locator",

abstract = "Vertex locator (VELO) is a silicon microstrip detector situated around the interaction point in the large Hadron Collider beauty (LHCb) spectrometer at the Large Hadron Collider. The LHCb experiment is dedicated to studying charge conjugation and parity symmetry violation in the heavy flavor sector and rare decays of B mesons. The precise reconstruction of both the primary and secondary vertices, obtained by the VELO, is crucial in the selection of signal events containing b and c quarks and lifetime measurements. VELO consists of two retractable parts that operate at 8 mm from the interaction region. Its proximity to proton beams makes the LHCb VELO a place for studying radiation damage effects in silicon detectors in proton-proton and heavy-ion collisions. The latest results from radiation damage studies and their impact on the operation of the LHCb VELO after the first data-taking period (Run I) and the ongoing Run II are presented in this paper. The main macroscopic parameters, influenced by particle fluence, are described along with selected methods of their monitoring. All the results show that VELO sustains the impact of high fluence of radiation, and its performance will not change significantly until the end of Run II.",

author = "K. Akiba and M. Alexander and W. Barter and L. Bell and G. Bogdanova and S. Borghi and T. Bowcock and E. Buchanan and J. Buytaert and {De Capua}, S. and S. Chen and P. Collins and A. Crocombe and E. Dall'Occo and C. Dean and F. Dettori and K. Dreimanis and G. Dujany and L. Eklund and T. Evans and M. Gersabeck and T. Gershon and T. Hadavizadeh and J. Harrison and K. Hennessy and W. Hulsbergen and D. Hutchcroft and E. Jans and M. John and P. Kopciewicz and P. Koppenburg and G. Lafferty and T. Latham and A. Leflat and M. Majewski and F. Marinho and J. Mylroie-Smith and A. Oblakowska-Mucha and C. Parkes and A. Pearce and A. Poluektov and A. Pritchard and W. Qian and S. Redford and S. Richards and K. Rinnert and E. Rodrigues and P. Rodriguez and M. Schiller and M. Smith and T. Szumlak and {Van Beuzekom}, M. and J. Velthuis and V. Volkov and H. Wark and A. Webber and M. Williams",

year = "2018",

month = may,

day = "1",

doi = "10.1109/TNS.2018.2824618",

language = "English",

volume = "65",

pages = "1127--1132",

journal = "IEEE Transactions on Nuclear Science",

issn = "0018-9499",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

number = "5",

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Akiba, K, Alexander, M, Barter, W, Bell, L, Bogdanova, G, Borghi, S, Bowcock, T, Buchanan, E, Buytaert, J, De Capua, S, Chen, S, Collins, P, Crocombe, A, Dall'Occo, E, Dean, C, Dettori, F, Dreimanis, K, Dujany, G, Eklund, L, Evans, T, Gersabeck, M, Gershon, T, Hadavizadeh, T, Harrison, J, Hennessy, K, Hulsbergen, W, Hutchcroft, D, Jans, E, John, M, Kopciewicz, P, Koppenburg, P, Lafferty, G, Latham, T, Leflat, A, Majewski, M, Marinho, F, Mylroie-Smith, J, Oblakowska-Mucha, A, Parkes, C, Pearce, A, Poluektov, A, Pritchard, A, Qian, W, Redford, S, Richards, S, Rinnert, K, Rodrigues, E, Rodriguez, P, Schiller, M, Smith, M, Szumlak, T, Van Beuzekom, M, Velthuis, J, Volkov, V, Wark, H, Webber, A & Williams, M 2018, 'Radiation Damage Effects and Operation of the LHCb Vertex Locator', IEEE Transactions on Nuclear Science, vol. 65, no. 5, pp. 1127-1132. https://doi.org/10.1109/TNS.2018.2824618

TY - JOUR

T1 - Radiation Damage Effects and Operation of the LHCb Vertex Locator

AU - Akiba, K.

AU - Alexander, M.

AU - Barter, W.

AU - Bell, L.

AU - Bogdanova, G.

AU - Borghi, S.

AU - Bowcock, T.

AU - Buchanan, E.

AU - Buytaert, J.

AU - De Capua, S.

AU - Chen, S.

AU - Collins, P.

AU - Crocombe, A.

AU - Dall'Occo, E.

AU - Dean, C.

AU - Dettori, F.

AU - Dreimanis, K.

AU - Dujany, G.

AU - Eklund, L.

AU - Evans, T.

AU - Gersabeck, M.

AU - Gershon, T.

AU - Hadavizadeh, T.

AU - Harrison, J.

AU - Hennessy, K.

AU - Hulsbergen, W.

AU - Hutchcroft, D.

AU - Jans, E.

AU - John, M.

AU - Kopciewicz, P.

AU - Koppenburg, P.

AU - Lafferty, G.

AU - Latham, T.

AU - Leflat, A.

AU - Majewski, M.

AU - Marinho, F.

AU - Mylroie-Smith, J.

AU - Oblakowska-Mucha, A.

AU - Parkes, C.

AU - Pearce, A.

AU - Poluektov, A.

AU - Pritchard, A.

AU - Qian, W.

AU - Redford, S.

AU - Richards, S.

AU - Rinnert, K.

AU - Rodrigues, E.

AU - Rodriguez, P.

AU - Schiller, M.

AU - Smith, M.

AU - Szumlak, T.

AU - Van Beuzekom, M.

AU - Velthuis, J.

AU - Volkov, V.

AU - Wark, H.

AU - Webber, A.

AU - Williams, M.

PY - 2018/5/1

Y1 - 2018/5/1

N2 - Vertex locator (VELO) is a silicon microstrip detector situated around the interaction point in the large Hadron Collider beauty (LHCb) spectrometer at the Large Hadron Collider. The LHCb experiment is dedicated to studying charge conjugation and parity symmetry violation in the heavy flavor sector and rare decays of B mesons. The precise reconstruction of both the primary and secondary vertices, obtained by the VELO, is crucial in the selection of signal events containing b and c quarks and lifetime measurements. VELO consists of two retractable parts that operate at 8 mm from the interaction region. Its proximity to proton beams makes the LHCb VELO a place for studying radiation damage effects in silicon detectors in proton-proton and heavy-ion collisions. The latest results from radiation damage studies and their impact on the operation of the LHCb VELO after the first data-taking period (Run I) and the ongoing Run II are presented in this paper. The main macroscopic parameters, influenced by particle fluence, are described along with selected methods of their monitoring. All the results show that VELO sustains the impact of high fluence of radiation, and its performance will not change significantly until the end of Run II.

AB - Vertex locator (VELO) is a silicon microstrip detector situated around the interaction point in the large Hadron Collider beauty (LHCb) spectrometer at the Large Hadron Collider. The LHCb experiment is dedicated to studying charge conjugation and parity symmetry violation in the heavy flavor sector and rare decays of B mesons. The precise reconstruction of both the primary and secondary vertices, obtained by the VELO, is crucial in the selection of signal events containing b and c quarks and lifetime measurements. VELO consists of two retractable parts that operate at 8 mm from the interaction region. Its proximity to proton beams makes the LHCb VELO a place for studying radiation damage effects in silicon detectors in proton-proton and heavy-ion collisions. The latest results from radiation damage studies and their impact on the operation of the LHCb VELO after the first data-taking period (Run I) and the ongoing Run II are presented in this paper. The main macroscopic parameters, influenced by particle fluence, are described along with selected methods of their monitoring. All the results show that VELO sustains the impact of high fluence of radiation, and its performance will not change significantly until the end of Run II.

UR - http://www.scopus.com/inward/record.url?scp=85045335437&partnerID=8YFLogxK

U2 - 10.1109/TNS.2018.2824618

DO - 10.1109/TNS.2018.2824618

M3 - Article

SN - 0018-9499

VL - 65

SP - 1127

EP - 1132

JO - IEEE Transactions on Nuclear Science

JF - IEEE Transactions on Nuclear Science

IS - 5

ER -

Radiation Damage Effects and Operation of the LHCb Vertex Locator

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