Effects of damage caused by non-ionizing energy loss in Si Mini-Pad sensors for the PHENIX MPC-EX

J. S. Chai, M. Ghergherehchi, K. I. Hahn, S. Y. Han, I. W. Jeong, K. S. Joo, E. J. Kim, S. G. Kim, Y. K. Kim, E. Kistenev, Y. Kwon, J. G. Lajoie, Z. Li, J. H. Lee, K. S. Lim, S. H. Lim, J. M. Park, K. S. Park, S. Y. Park, H. S. SongD. G. Sue, A. Sukhanov

Research output: Contribution to journalArticle

Abstract

The PHENIX MPC-EX is an W/Si pre-shower detector operating at small angles with respect to the beam in the Relativistic Heavy Ion Collider (RHIC). The Si Mini-Pad sensors are the active element of the detector. The expected hadron flux to the Si Mini-Pad sensors will generate significant non-ionizing energy loss in the sensors, which may damage the crystalline structure of the sensor’s bulk material. We investigated the nature of the hadron flux to the Si Mini-Pad sensors through a full simulation and determined its effect on the sensor’s characteristics based on a beam test. The investigation showed key issues in designing a preshower detector using silicon sensors and operating under a large neutron fluence and offered valuable information on the operation of the MPC-EX detector.

Original languageEnglish
Pages (from-to)1809-1816
Number of pages8
JournalJournal of the Korean Physical Society
Volume65
Issue number11
DOIs
Publication statusPublished - 2014 Jan 1

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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    Chai, J. S., Ghergherehchi, M., Hahn, K. I., Han, S. Y., Jeong, I. W., Joo, K. S., Kim, E. J., Kim, S. G., Kim, Y. K., Kistenev, E., Kwon, Y., Lajoie, J. G., Li, Z., Lee, J. H., Lim, K. S., Lim, S. H., Park, J. M., Park, K. S., Park, S. Y., ... Sukhanov, A. (2014). Effects of damage caused by non-ionizing energy loss in Si Mini-Pad sensors for the PHENIX MPC-EX. Journal of the Korean Physical Society, 65(11), 1809-1816. https://doi.org/10.3938/jkps.65.1809