Project description
This project aims at distributing periodic (mainly clock) signals of arbitrary frequencies over a White Rabbit network. A clock is encoded at a master node and unidirectionally broadcast to any number of receiver nodes, which recover an in-phase copy of the original signal. Number of distributed clocks depends only on network bandwidth, required latency and acceptable accuracy level.
Possible applications in the accelerators are:
- Beam-synchronous timing
- RF clock distribution
- RF or beam-synchronous signal acquisition
Requirements
Note*: this is just a preliminary specification for the proof-of-concept demo project, it may be modified.
- Frequency range: at least 50 MHz (to be able to distribute 40.079 MHz LHC bunch crossing frequency)
- Tracking bandwidth: 50 kHz
- Required jitter: < 10 ps rms (10 Hz - 10 MHz)
- Accuracy: < 1ns
- Precision: < 100 ps
- Hardware platform: FMC DDS on a SPEC carrier.
Contacts
Commercial producers
General questions about project
- Tomasz Włostowski - CERN
Status
Date | Event |
01-04-2013 | Project started. |
03-04-2013 | Specification ready. |
10-04-2013 | V0 schematics created & reviewed. |
15-04-2013 | FMC hardware order sent to company. |
20-04-2013 | Started VHDL development |
24-04-2013 | Received & powered up 2 DDS mezzanines. |
08-05-2013 | Working demo design. |
15-05-2013 | Demo presented on PH-ESE seminar. |
Tomasz Wlostowski - 24 July 2013