Measurement of the relative response of small-electrode CMOS sensors at Diamond Light Source

M. Mironova; K. Metodiev; P. Allport; I. Berdalovic; D. Bortoletto; C. Buttar; R. Cardella; V. Dao; M. Dyndal; P. Freeman; L. Flores Sanz de Acedo; L. Gonella; T. Kugathasan; H. Pernegger; F. Piro; R. Plackett; P. Riedler; A. Sharma; E. J. Schioppa; I. Shipsey; C. Solans Sanchez; W. Snoeys; H. Wennlöf; D. Weatherill; D. Wood; S. Worm

doi:10.1016/j.nima.2019.163381

Measurement of the relative response of small-electrode CMOS sensors at Diamond Light Source

M. Mironova
, K. Metodiev
, P. Allport
, I. Berdalovic
, D. Bortoletto
, C. Buttar
, R. Cardella
, V. Dao
, M. Dyndal
, P. Freeman
, L. Flores Sanz de Acedo
, L. Gonella
, T. Kugathasan
, H. Pernegger
, F. Piro
, R. Plackett
, P. Riedler
, A. Sharma
, E. J. Schioppa
, I. Shipsey

C. Solans Sanchez, W. Snoeys, H. Wennlöf, D. Weatherill, D. Wood, S. Worm

Physics and Astronomy

University of Oxford
University of Birmingham
CERN (CH)
University of Zagreb
University of Glasgow
University of Oslo

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

This paper outlines the results of investigations into the effects of radiation damage in the mini-MALTA depleted monolithic pixel sensor prototype. Measurements were carried out at Diamond Light Source using a micro-focus X-ray beam, which scanned across the surface of the device in 2 μm steps. This allowed the in-pixel photon response to be measured directly with high statistics. Three pixel design variations were considered: one with the standard continuous n⁻ layer layout and front-end, and extra deep p-well and n⁻ gap designs with a modified front-end. Five chips were measured: one unirradiated, one neutron irradiated, and three proton irradiated. The standard design showed a decrease of 12% in pixel response after irradiation to 1e15 n_eq∕cm². For the two new designs the pixel response did not decrease significantly after irradiation. A decrease of pixel response at high biasing voltages was observed. The charge sharing in the chip was quantified and found to be in agreement with expectations.

Original language	English
Article number	163381
Journal	Nuclear Inst. and Methods in Physics Research, A
Volume	956
DOIs	https://doi.org/10.1016/j.nima.2019.163381
State	Published - Mar 11 2020

Keywords

CMOS sensors
MALTA
Monolithic active pixel sensors
Radiation-hard detectors
Synchrotron light source
TowerJazz

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10.1016/j.nima.2019.163381

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Mironova, M., Metodiev, K., Allport, P., Berdalovic, I., Bortoletto, D., Buttar, C., Cardella, R., Dao, V., Dyndal, M., Freeman, P., Flores Sanz de Acedo, L., Gonella, L., Kugathasan, T., Pernegger, H., Piro, F., Plackett, R., Riedler, P., Sharma, A., Schioppa, E. J., ... Worm, S. (2020). Measurement of the relative response of small-electrode CMOS sensors at Diamond Light Source. Nuclear Inst. and Methods in Physics Research, A, 956, Article 163381. https://doi.org/10.1016/j.nima.2019.163381

@article{dbe6af7f98134407b5b0eb7ff0462a38,

title = "Measurement of the relative response of small-electrode CMOS sensors at Diamond Light Source",

abstract = "This paper outlines the results of investigations into the effects of radiation damage in the mini-MALTA depleted monolithic pixel sensor prototype. Measurements were carried out at Diamond Light Source using a micro-focus X-ray beam, which scanned across the surface of the device in 2 μm steps. This allowed the in-pixel photon response to be measured directly with high statistics. Three pixel design variations were considered: one with the standard continuous n− layer layout and front-end, and extra deep p-well and n− gap designs with a modified front-end. Five chips were measured: one unirradiated, one neutron irradiated, and three proton irradiated. The standard design showed a decrease of 12\% in pixel response after irradiation to 1e15 neq∕cm2. For the two new designs the pixel response did not decrease significantly after irradiation. A decrease of pixel response at high biasing voltages was observed. The charge sharing in the chip was quantified and found to be in agreement with expectations.",

keywords = "CMOS sensors, MALTA, Monolithic active pixel sensors, Radiation-hard detectors, Synchrotron light source, TowerJazz",

author = "M. Mironova and K. Metodiev and P. Allport and I. Berdalovic and D. Bortoletto and C. Buttar and R. Cardella and V. Dao and M. Dyndal and P. Freeman and \{Flores Sanz de Acedo\}, L. and L. Gonella and T. Kugathasan and H. Pernegger and F. Piro and R. Plackett and P. Riedler and A. Sharma and Schioppa, \{E. J.\} and I. Shipsey and \{Solans Sanchez\}, C. and W. Snoeys and H. Wennl{\"o}f and D. Weatherill and D. Wood and S. Worm",

note = "Publisher Copyright: {\textcopyright} 2020 Elsevier B.V.",

year = "2020",

month = mar,

day = "11",

doi = "10.1016/j.nima.2019.163381",

language = "English",

volume = "956",

journal = "Nuclear Inst. and Methods in Physics Research, A",

issn = "0168-9002",

}

Mironova, M, Metodiev, K, Allport, P, Berdalovic, I, Bortoletto, D, Buttar, C, Cardella, R, Dao, V, Dyndal, M, Freeman, P, Flores Sanz de Acedo, L, Gonella, L, Kugathasan, T, Pernegger, H, Piro, F, Plackett, R, Riedler, P, Sharma, A, Schioppa, EJ, Shipsey, I, Solans Sanchez, C, Snoeys, W, Wennlöf, H, Weatherill, D, Wood, D & Worm, S 2020, 'Measurement of the relative response of small-electrode CMOS sensors at Diamond Light Source', Nuclear Inst. and Methods in Physics Research, A, vol. 956, 163381. https://doi.org/10.1016/j.nima.2019.163381

TY - JOUR

T1 - Measurement of the relative response of small-electrode CMOS sensors at Diamond Light Source

AU - Mironova, M.

AU - Metodiev, K.

AU - Allport, P.

AU - Berdalovic, I.

AU - Bortoletto, D.

AU - Buttar, C.

AU - Cardella, R.

AU - Dao, V.

AU - Dyndal, M.

AU - Freeman, P.

AU - Flores Sanz de Acedo, L.

AU - Gonella, L.

AU - Kugathasan, T.

AU - Pernegger, H.

AU - Piro, F.

AU - Plackett, R.

AU - Riedler, P.

AU - Sharma, A.

AU - Schioppa, E. J.

AU - Shipsey, I.

AU - Solans Sanchez, C.

AU - Snoeys, W.

AU - Wennlöf, H.

AU - Weatherill, D.

AU - Wood, D.

AU - Worm, S.

PY - 2020/3/11

Y1 - 2020/3/11

N2 - This paper outlines the results of investigations into the effects of radiation damage in the mini-MALTA depleted monolithic pixel sensor prototype. Measurements were carried out at Diamond Light Source using a micro-focus X-ray beam, which scanned across the surface of the device in 2 μm steps. This allowed the in-pixel photon response to be measured directly with high statistics. Three pixel design variations were considered: one with the standard continuous n− layer layout and front-end, and extra deep p-well and n− gap designs with a modified front-end. Five chips were measured: one unirradiated, one neutron irradiated, and three proton irradiated. The standard design showed a decrease of 12% in pixel response after irradiation to 1e15 neq∕cm2. For the two new designs the pixel response did not decrease significantly after irradiation. A decrease of pixel response at high biasing voltages was observed. The charge sharing in the chip was quantified and found to be in agreement with expectations.

AB - This paper outlines the results of investigations into the effects of radiation damage in the mini-MALTA depleted monolithic pixel sensor prototype. Measurements were carried out at Diamond Light Source using a micro-focus X-ray beam, which scanned across the surface of the device in 2 μm steps. This allowed the in-pixel photon response to be measured directly with high statistics. Three pixel design variations were considered: one with the standard continuous n− layer layout and front-end, and extra deep p-well and n− gap designs with a modified front-end. Five chips were measured: one unirradiated, one neutron irradiated, and three proton irradiated. The standard design showed a decrease of 12% in pixel response after irradiation to 1e15 neq∕cm2. For the two new designs the pixel response did not decrease significantly after irradiation. A decrease of pixel response at high biasing voltages was observed. The charge sharing in the chip was quantified and found to be in agreement with expectations.

KW - CMOS sensors

KW - MALTA

KW - Monolithic active pixel sensors

KW - Radiation-hard detectors

KW - Synchrotron light source

KW - TowerJazz

UR - https://www.scopus.com/pages/publications/85077506177

U2 - 10.1016/j.nima.2019.163381

DO - 10.1016/j.nima.2019.163381

M3 - Article

AN - SCOPUS:85077506177

SN - 0168-9002

VL - 956

JO - Nuclear Inst. and Methods in Physics Research, A

JF - Nuclear Inst. and Methods in Physics Research, A

M1 - 163381

ER -

Measurement of the relative response of small-electrode CMOS sensors at Diamond Light Source

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Keywords

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