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A Si-PAD and Tungsten Based Electromagnetic Calorimeter for the Forward Direct Photon Measurement at LHC

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Proceedings of International Conference on Technology and Instrumentation in Particle Physics 2017 (TIPP 2017)

Part of the book series: Springer Proceedings in Physics ((SPPHY,volume 213))

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Abstract

For the forward direct photon measurement at LHC-ALICE, we propose to construct a Forward Calorimeter (FoCal). FoCal-E is a silicon and tungsten calorimeter design, consists of low granularity Si-Pad layers (LGL) for precise measurement of photon energy and a few high granularity layers (HGL) with pixel readout to achieve an excellent position resolution to separate two photons from \(\pi ^0\). We performed R&D of LGL prototype since 2014. From results of past three years tests (2014 \(\sim \) 2016) at CERN PS and SPS, LGL prototype has a good linearity and the energy resolution is about \(10\%\). In addition, good agreement with theoretical values and simulation were observed about longitudinal shower profile.

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References

  1. The ALICE FoCal Collaboration: Letter of Intent A Forward Calorimeter (FoCal) for the ALICE experiment (2016)

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  3. Wang, H.: High granularity digital Si-W electromagnetic calorimeter for forward direct photon measurements at LHC

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Acknowledgemtent

This work was supported by JSPS KAKENHI Grant Numbers JP25287047, JP26220707, JP17H01122.

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Authors and Affiliations

  1. University of Tsukuba, Tsukuba, Japan

    Yota Kawamura

Authors
  1. Yota Kawamura
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for the ALICE FoCal Collaboration

Corresponding author

Correspondence to Yota Kawamura .

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Editors and Affiliations

  1. Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, China

    Zhen-An Liu

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Kawamura, Y., for the ALICE FoCal Collaboration. (2018). A Si-PAD and Tungsten Based Electromagnetic Calorimeter for the Forward Direct Photon Measurement at LHC. In: Liu, ZA. (eds) Proceedings of International Conference on Technology and Instrumentation in Particle Physics 2017. TIPP 2017. Springer Proceedings in Physics, vol 213. Springer, Singapore. https://doi.org/10.1007/978-981-13-1316-5_16

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