Abstract
A new type of n-in-p planar pixel sensors have been developed at KEK/HPK in order to cope with the maximum particle fluence of 1-3×1016 1 MeV equivalent neutrons per square centimeter (neq/cm2) in the upcoming LHC upgrades. Four n-in-p devices were connected by bump-bonding to the new ATLAS Pixel front-end chip (FE-I4A) and characterized before and after the irradiation to 2×1015 neq/cm2. These planar sensors are 150μm thick, using biasing structures made out of polysilicon or punch-through dot and isolation structures of common or individual p-stop. Results of measurements with radioactive 90Sr source and with a 120 GeV/c momentum pion beam at the CERN Super Proton Synchrotron (SPS) are presented. The common p-stop isolation structure shows a better performance than the individual p-stop design, after the irradiation. The flat distribution of the collected charge in the depth direction after the irradiation implies that the effect of charge trapping is small, at the fluence, with the bias voltage well above the full depletion voltage.
| Original language | English |
|---|---|
| Pages (from-to) | 78-83 |
| Number of pages | 6 |
| Journal | Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment |
| Volume | 699 |
| DOIs | |
| Publication status | Published - 2013 Jan 21 |
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Keywords
- ATLAS
- HL-LHC
- N-in-p
- Pixel detector
ASJC Scopus subject areas
- Instrumentation
- Nuclear and High Energy Physics
Cite this
Evaluation of novel KEK/HPK n-in-p pixel sensors for ATLAS upgrade with testbeam. / Nagai, R.; Idárraga, J.; Gallrapp, C.; Unno, Y.; Lounis, A.; Jinnouchi, O.; Takubo, Y.; Hanagaki, K.; Hara, K.; Ikegami, Y.; Kimura, N.; Nagai, K.; Nakano, I.; Takashima, R.; Terada, S.; Tojo, J.; Yorita, Kohei; Altenheiner, S.; Backhaus, M.; Bomben, M.; Forshaw, D.; George, M.; Janssen, J.; Jentzsch, J.; Lapsien, T.; La Rosa, A.; MacChiolo, A.; Marchiori, G.; Nellist, C.; Rubinsky, I.; Rummler, A.; Troska, G.; Weigell, P.; Weingarten, J.
In: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 699, 21.01.2013, p. 78-83.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Evaluation of novel KEK/HPK n-in-p pixel sensors for ATLAS upgrade with testbeam
AU - Nagai, R.
AU - Idárraga, J.
AU - Gallrapp, C.
AU - Unno, Y.
AU - Lounis, A.
AU - Jinnouchi, O.
AU - Takubo, Y.
AU - Hanagaki, K.
AU - Hara, K.
AU - Ikegami, Y.
AU - Kimura, N.
AU - Nagai, K.
AU - Nakano, I.
AU - Takashima, R.
AU - Terada, S.
AU - Tojo, J.
AU - Yorita, Kohei
AU - Altenheiner, S.
AU - Backhaus, M.
AU - Bomben, M.
AU - Forshaw, D.
AU - George, M.
AU - Janssen, J.
AU - Jentzsch, J.
AU - Lapsien, T.
AU - La Rosa, A.
AU - MacChiolo, A.
AU - Marchiori, G.
AU - Nellist, C.
AU - Rubinsky, I.
AU - Rummler, A.
AU - Troska, G.
AU - Weigell, P.
AU - Weingarten, J.
PY - 2013/1/21
Y1 - 2013/1/21
N2 - A new type of n-in-p planar pixel sensors have been developed at KEK/HPK in order to cope with the maximum particle fluence of 1-3×1016 1 MeV equivalent neutrons per square centimeter (neq/cm2) in the upcoming LHC upgrades. Four n-in-p devices were connected by bump-bonding to the new ATLAS Pixel front-end chip (FE-I4A) and characterized before and after the irradiation to 2×1015 neq/cm2. These planar sensors are 150μm thick, using biasing structures made out of polysilicon or punch-through dot and isolation structures of common or individual p-stop. Results of measurements with radioactive 90Sr source and with a 120 GeV/c momentum pion beam at the CERN Super Proton Synchrotron (SPS) are presented. The common p-stop isolation structure shows a better performance than the individual p-stop design, after the irradiation. The flat distribution of the collected charge in the depth direction after the irradiation implies that the effect of charge trapping is small, at the fluence, with the bias voltage well above the full depletion voltage.
AB - A new type of n-in-p planar pixel sensors have been developed at KEK/HPK in order to cope with the maximum particle fluence of 1-3×1016 1 MeV equivalent neutrons per square centimeter (neq/cm2) in the upcoming LHC upgrades. Four n-in-p devices were connected by bump-bonding to the new ATLAS Pixel front-end chip (FE-I4A) and characterized before and after the irradiation to 2×1015 neq/cm2. These planar sensors are 150μm thick, using biasing structures made out of polysilicon or punch-through dot and isolation structures of common or individual p-stop. Results of measurements with radioactive 90Sr source and with a 120 GeV/c momentum pion beam at the CERN Super Proton Synchrotron (SPS) are presented. The common p-stop isolation structure shows a better performance than the individual p-stop design, after the irradiation. The flat distribution of the collected charge in the depth direction after the irradiation implies that the effect of charge trapping is small, at the fluence, with the bias voltage well above the full depletion voltage.
KW - ATLAS
KW - HL-LHC
KW - N-in-p
KW - Pixel detector
UR - http://www.scopus.com/inward/record.url?scp=84870414908&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84870414908&partnerID=8YFLogxK
U2 - 10.1016/j.nima.2012.04.081
DO - 10.1016/j.nima.2012.04.081
M3 - Article
AN - SCOPUS:84870414908
VL - 699
SP - 78
EP - 83
JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
SN - 0168-9002
ER -