Title :
A low-cost, NIST-traceable, high performance dielectric resonator master oscillator [for CEBAF]
Author :
Doolittle, L.R. ; Hovater, C. ; Merminga, L. ; Musson, J. ; Wissmann, M.
Author_Institution :
Thomas Jefferson Nat. Accel. Fac., Newport News, VA, USA
Abstract :
The current CEBAF Master Oscillator (MO) uses a quartz-based 10 MHz reference to synthesize 70 MHz and 499 MHz, which are then distributed to each of the klystron galleries on site. Due to the specialised nature of CEBAF´s MO requirements, it has been determined that an in-house design and fabrication would provide a cost-effective alternative to purchasing or modifying vendor equipment. A Global Positioning System (GPS) disciplined, Direct Digital Synthesis (DDS) based MO is proposed which incorporates low-cost consumer RF components, designed for cellular communications. A 499 MHz Dielectric Resonant Oscillator (DRO) Voltage Controlled Oscillator (VCO) is phase-locked to a GPS-disciplined 10 MHz reference, and micro-tuned via a DDS, in an effort to achieve the lowest phase noise possible
Keywords :
Global Positioning System; accelerator RF systems; dielectric resonator oscillators; direct digital synthesis; electron accelerators; free electron lasers; frequency stability; frequency standards; optical klystrons; phase noise; timing jitter; 499 MHz; CEBAF master oscillator; DRO VCO; GPS disciplined DDS based master oscillator; NIST-traceable; UV FEL drivers; high performance; low-cost consumer RF components; lowest phase noise; micro-tuned; phase-locked; timing jitter; Dielectrics; Frequency domain analysis; Global Positioning System; Noise measurement; Phase measurement; Phase noise; Radio frequency; Stability; Timing jitter; Voltage-controlled oscillators;
Conference_Titel :
Particle Accelerator Conference, 1999. Proceedings of the 1999
Conference_Location :
New York, NY
Print_ISBN :
0-7803-5573-3
DOI :
10.1109/PAC.1999.795349
