High-precision phase detection in femtosecond timing and synchronization system for TXGLS
| Autor: | Lawrence Doolittle, Chuanxiang Tang, Jin Yang, Lixin Yan, Qiang Du, Wenhui Huang, Yingchao Du, Gang Huang, Yilun Xu, Russell Wilcox, Zhenyang Lin |
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| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
digital signal processing
01 natural sciences Signal Phase detector 010309 optics Engineering Optics Sampling (signal processing) Aliasing 0103 physical sciences 010306 general physics Instrumentation Engineering (miscellaneous) Digital signal processing Jitter Physics calibration signal Noise (signal processing) business.industry Applied Mathematics Physical Sciences timing jitter Radio frequency phase detection business |
| Zdroj: | Xu, Y; Huang, G; Doolittle, L; Du, Q; Wilcox, R; Yang, J; et al.(2018). High-precision phase detection in femtosecond timing and synchronization system for TXGLS. Measurement Science and Technology, 29(6). doi: 10.1088/1361-6501/aab6f7. Lawrence Berkeley National Laboratory: Retrieved from: http://www.escholarship.org/uc/item/05q050nf Measurement Science and Technology, vol 29, iss 6 |
| Popis: | Author(s): Xu, Y; Huang, G; Doolittle, L; Du, Q; Wilcox, R; Yang, J; Lin, Z; Du, Y; Yan, L; Huang, W; Tang, C | Abstract: High-precision phase detection is critical to the timing and synchronization system for particle accelerators. A live calibration signal is introduced to femtosecond-level phase detection in order to measure the relative phase jitter between a reference wave and a radio frequency (RF) signal, and compensate for the cable electrical length drift due to the thermal variation effect. Non-IQ sampling and 2-stage cascaded integrator-comb filters are integrated into the field-programmable gate array-based digital signal processing to reduce spectrum aliasing and suppress noise. Fine adjustment of hardware components has been made to ensure the isolation between different signals and the linearity over the full-range power level. We have achieved a 6.3 fs root mean square timing jitter for a 2856 MHz RF signal in a single channel, compared to the theoretical limit of 5.1 fs for the current hardware component. |
| Databáze: | OpenAIRE |
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