1. Main Timing System Overview
Joze Dedic
… on behalf of CSL MA team
the best people make cosylab

2. Outline …CWO-1 overview & role; timing system
operational view (run, cycles, events)
main timing generator, MTG
transport layer / MRF
main timing receiver, MTR (EVR link to EUC)
CWO-2…
Cosylab 2010

3. Timing activities in CWO-1
studied & refined requirements (simplified)
moved reqs. to EA model (traceability)
made high-level architecture design
did a step further to allow better architectural decisions (CWO-2)
MRF internal FPGA development (..NDA)
MRF integration to LV RT
Jukka wants us to become MRF equipment producer, integrator and distributor
Cosylab 2010

4. Overview & role; CS MTS transport receivers w. equipment prepare data
process data in hard real-time
make sure everybody gets the same time (200m = ~1ms)
decode events and poke equipment CS
MTS
transport
receivers w. equipment
Cosylab 2010

5. Operational view
asynchronous transmitted user data
Cosylab 2010

6. Main timing generator, MTG
flexibility
hard real time exection
virtual accelerator tables (priorities)
asynchronously transmitted user data
linac 10 Hz stability pulse…
PXI crate
controller
LV RT
MRF EVG
Cosylab 2010

7. Transport layer / MRF hard real-time performance
16b 125 MHz
typ. 25ps jitter
8ns output resolution
simplistic & robust transport layer
product used at many accs.
SLS, DLS, ASP, SSRF, Elettra, ALBA…
CSL and MRF collaborate
R&D support
MA specific customization:
LV support
specific MTG functionality
EVR wrapper
receivers can be made really simple because of simple transport layer protocol
2.5 GB realtime link
Cosylab 2010

8. Main timing receiver, MTR
events / (asynch.) user
(HW) real-time response
trigger equipment via univ. IO module (electrical or optical signal)
trigger application via IRQ
trigger neighboring cards via the 8 bit PXI real-time bus
provide time stamp functionality
(offline) configure
which events to listen in which VA
how to respond
Cosylab 2010

9. CWO-2 activities
distribute and agree MTS requirements with all WP holders
finalize MTS architecture
define verification procedure; FAT/SAT
set up mockup demo of MTS
work towards final implementation
Cosylab 2010

10. 
Cosylab 2010

11. Sync or swim timing and synchronization system from 1917
twin Vickers machine guns, synchronized to fire at 500 rounds/min between the blades of the propeller rotating in front of them
In the event of a timing error, a few hits on the wooden blades were sufficient for the plane’s own propeller to be shot away.
The 1917 Sopwith Camel illustrates a common attribute of timing and synchronization systems. Although the Camel was notoriously difficult to fly, it was one of the most successful fighter aircraft of its day. Much of that success can be attributed to the use of twin Vickers machine guns, synchronized to fire at 500 rounds/min between the blades of the propeller rotating in front of them. In the event of a timing error, a few hits on the wooden blades were sufficient for the plane’s own propeller to be shot away.
Sopwith Camel
Cosylab 2010