Development of n-in-p silicon planar pixel sensors and flip-chip modules for very high radiation environments

Y. Unno, Y. Ikegami, S. Terada, S. Mitsui, O. Jinnouchi, S. Kamada, K. Yamamura, A. Ishida, M. Ishihara, T. Inuzuka, K. Hanagaki, K. Hara, T. Kondo, N. Kimura, I. Nakano, K. Nagai, R. Takashima, J. Tojo, K. Yorita

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

In this paper we present R&D of n-in-p pixel sensors, aiming for a very high radiation environment up to a fluence of 1016 n eq/cm2. To fabricate these sensors, two batches with different mask sets were employed: the first resulted in pixel sensors compatible with the ATLAS pixel readout frontend chip called FE-I3, and the second in FE-I3 and a new frontend chip, FE-I4, compatible sensors; small diodes were employed to investigate the width from the active diode to the dicing edge and the guard rings. Tests involving the diodes showed that the strong increase of leakage current was attributed to the edge current when the lateral depletion zone reaches the dicing edge and the lateral depletion along the silicon surface was correlated with the 'field' width. The onset was observed at a voltage of 1000 V when the width was equal to ∼400 μm. The pixel sensors that were diced at a width of 450 μm could successfully maintain a bias voltage of 1000 V. Hybrid flip-chip pixel modules with dummy and real chips were also fabricated. Lead (PbSn) solder bump bonding proved to be successful. However, lead-free (SnAg) solder bump bonding requires further optimization.

Original languageEnglish
Pages (from-to)129-135
Number of pages7
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume650
Issue number1
DOIs
Publication statusPublished - Sep 11 2011
Externally publishedYes

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modules
Pixels
pixels
chips
Radiation
Silicon
sensors
Sensors
silicon
radiation
Diodes
diodes
solders
depletion
dummies
electric potential
Bias voltage
Leakage currents
Soldering alloys
readout

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Instrumentation

Cite this

Development of n-in-p silicon planar pixel sensors and flip-chip modules for very high radiation environments. / Unno, Y.; Ikegami, Y.; Terada, S.; Mitsui, S.; Jinnouchi, O.; Kamada, S.; Yamamura, K.; Ishida, A.; Ishihara, M.; Inuzuka, T.; Hanagaki, K.; Hara, K.; Kondo, T.; Kimura, N.; Nakano, I.; Nagai, K.; Takashima, R.; Tojo, J.; Yorita, K.

In: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 650, No. 1, 11.09.2011, p. 129-135.

Research output: Contribution to journalArticle

Unno, Y, Ikegami, Y, Terada, S, Mitsui, S, Jinnouchi, O, Kamada, S, Yamamura, K, Ishida, A, Ishihara, M, Inuzuka, T, Hanagaki, K, Hara, K, Kondo, T, Kimura, N, Nakano, I, Nagai, K, Takashima, R, Tojo, J & Yorita, K 2011, 'Development of n-in-p silicon planar pixel sensors and flip-chip modules for very high radiation environments', Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, vol. 650, no. 1, pp. 129-135. https://doi.org/10.1016/j.nima.2010.12.191
Unno, Y. ; Ikegami, Y. ; Terada, S. ; Mitsui, S. ; Jinnouchi, O. ; Kamada, S. ; Yamamura, K. ; Ishida, A. ; Ishihara, M. ; Inuzuka, T. ; Hanagaki, K. ; Hara, K. ; Kondo, T. ; Kimura, N. ; Nakano, I. ; Nagai, K. ; Takashima, R. ; Tojo, J. ; Yorita, K. / Development of n-in-p silicon planar pixel sensors and flip-chip modules for very high radiation environments. In: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 2011 ; Vol. 650, No. 1. pp. 129-135.
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