A sub-picosecond digitally-controlled phase delay
Abstract
The use of precision timing measurements will be a major tool at the HL-LHC, where it will be used to suppress pile-up and to search for long-lived particles. To control a reference clock with sub-picosecond accuracy, we have fabricated in the TSMC 65 nm process a digitally controlled phase shifter. It is composed of a chain of 66 cells, each with a digitally controlled planar wave guide with either a short or long delay. With this a reference clock's phase can be controlled to a precision of 200 fs with dynamic range of 12 ps.
- Publication:
-
Journal of Instrumentation
- Pub Date:
- March 2022
- DOI:
- 10.1088/1748-0221/17/03/C03014
- arXiv:
- arXiv:2111.13548
- Bibcode:
- 2022JInst..17C3014D
- Keywords:
-
- Timing detectors;
- Analogue electronic circuits;
- Digital electronic circuits;
- Instrumentation and methods for time-of-flight (TOF) spectroscopy;
- Physics - Instrumentation and Detectors
- E-Print:
- 5 pages, 4 figures, presented at TWEPP 2021, submitted to JINST