Investigation of HV/HR-CMOS technology for the ATLAS Phase-II strip tracker upgrade

Fadeyev, V. et al. (2016) Investigation of HV/HR-CMOS technology for the ATLAS Phase-II strip tracker upgrade. Nuclear Instruments and Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment, 831, pp. 189-196. (doi: 10.1016/j.nima.2016.05.092)

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Abstract

ATLAS has formed strip CMOS project to study the use of CMOS MAPS devices as silicon strip sensors for the Phase-II Strip Tracker Upgrade. This choice of sensors promises several advantages over the conventional baseline design, such as better resolution, less material in the tracking volume, and faster construction speed. At the same time, many design features of the sensors are driven by the requirement of minimizing the impact on the rest of the detector. Hence the target devices feature long pixels which are grouped to form a virtual strip with binary-encoded z position. The key performance aspects are radiation hardness compatibility with HL-LHC environment, as well as extraction of the full hit position with full-reticle readout architecture. To date, several test chips have been submitted using two different CMOS technologies. The AMS 350 nm is a high voltage CMOS process (HV-CMOS), that features the sensor bias of up to 120 V. The TowerJazz 180 nm high resistivity CMOS process (HR-CMOS) uses a high resistivity epitaxial layer to provide the depletion region on top of the substrate. We have evaluated passive pixel performance, and charge collection projections. The results strongly support the radiation tolerance of these devices to radiation dose of the HL-LHC in the strip tracker region. We also describe design features for the next chip submission that are motivated by our technology evaluation.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Maneuski, Dr Dima and Blue, Dr Andrew and Kanisauskas, Mr Kestutis and Bates, Dr Richard and Buttar, Professor Craig
Authors: Fadeyev, V., Galloway, Z., Grabas, H., Grillo, A.A., Liang, Z., Martinez-Mckinney, F., Seiden, A., Volk, J., Affolder, A., Buckland, M., Meng, L., Arndt, K., Bortoletto, D., Huffman, T., John, J., McMahon, S., Nickerson, R., Phillips, P., Plackett, R., Shipsey, I., Vigani, L., Bates, R., Blue, A., Buttar, C., Kanisauskas, K., Maneuski, D., Benoit, M., Di Bello, F., Caragiulo, P., Dragone, A., Grenier, P., Kenney, C., Rubbo, F., Segal, J., Su, D., Tamma, C., Das, D., Dopke, J., Turchetta, R., Wilson, F., Worm, S., Ehrler, F., Peric, I., Gregor, I.M., Stanitzki, M., Hoeferkamp, M., Seidel, S., Hommels, L.B.A., Kramberger, G., Mandić, I., Mikuž, M., Muenstermann, D., Wang, R., Zhang, J., Warren, M., Song, W., Xiu, Q., and Zhu, H.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Nuclear Instruments and Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment
Publisher:Elsevier BV
ISSN:0168-9002
ISSN (Online):1872-9576
Published Online:24 May 2016

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