| Report number | CLICdp-Pub-2021-001 |
| Title | Test-beam characterisation of the CLICTD technology demonstrator - a small collection electrode High-Resistivity CMOS pixel sensor with simultaneous time and energy measurement |
| Author(s) | Ballabriga Sune, Rafael (CERN) ; Buschmann, Eric (CERN) ; Campbell, Michael (CERN) ; Dannheim, D (CERN) ; Dort, K (CERN) ; Egidos, N (CERN) ; Huth, L (DESY) ; Kremastiotis, I (CERN) ; Kroger, J (CERN) ; Linssen, L (CERN) ; Llopart, X (CERN) ; Munker, M (CERN) ; Nurnberg, A (CERN) ; Snoeys, W (CERN) ; Spannagel, S (DESY) ; Vanat, T (CERN) ; Vincente, M (CERN) ; Williams, M (CERN) |
| Publication | 2021 |
| Imprint | 2021-02-04 |
| Number of pages | 14 |
| Subject category | Particle Physics - Experiment |
| Accelerator/Facility, Experiment | CLIC |
| Study | CLICdp |
| Abstract | The CLIC Tracker Detector (CLICTD) is a monolithic pixel sensor. It is fabricated in a 180 nm CMOS imaging process, modified with an additional deep low-dose n-type implant to obtain full lateral depletion. The sensor features a small collection diode, which is essen- tial for achieving a low input capacitance. The CLICTD sensor was designed as a technology demonstrator in the context of the tracking detector studies for the Compact Linear Collider (CLIC). Its design characteristics are of broad interest beyond CLIC, for HL-LHC track- ing detector upgrades. It is produced in two different pixel flavours: one with a continuous deep n-type implant, and one with a segmented n-type implant to ensure fast charge collec- tion. The pixel matrix consists of 16 × 128 detection channels measuring 300 μm × 30 μm. Each detection channel is segmented into eight sub-pixels to reduce the amount of digital circuity while maintaining a small collection electrode pitch. This paper presents the char- acterisation results of the CLICTD sensor in a particle beam. The different pixel flavours are compared in detail by using the simultaneous time-over-threshold and time-of-arrival measurement functionalities. Most notably, a time resolution down to (5.8 ± 0.1) ns and a spatial resolution down to (4.6 ± 0.2) μm are measured. The hit detection efficiency is found to be well above 99.7% for thresholds of the order of several hundred electrons. |
| Copyright/License | Preprint: (License: CC-BY-4.0) |
| Submitted by | [email protected] |
Record created 2021-02-04, last modified 2021-02-04
