Last updated: 29/09/2008 11:07
29/09/2008: RF-TTC FAQs
30/07/2008: the synoptics of all the fibres connected for the TTC are available below
16/05/2007: All the modules are in production or in preproduction. RF2TTC will be distributed in June, RF_Rx and Tx will be available in Septembre.
16/05/2007: The installation campaign of the TTC/BST fibres began. The status is available on the TTC presentations made during the last LEADE meeting.
11/12/2006: The RF_Tx_D and the RF_Rx_D have been tested by the AB/RF group, and will be used as their standard modules for all the digital transmissions. The system will thus use digital transmitters and receivers instead of analogue ones (see RF_Tx and Rx pages), which will reduce the price of the system
11/12/2006: the RF2TTC board is mostly tested and a second prototype is being produced to be used by the experiments
11/12/2006: TTC upgrade system test report is available
13/12/2006: A set of modules (RF_Tx_D, RF_Rx_D, RF2TTC and TTC Fanout) will be available to the experiments beginning of January
13/12/2006: A new price of this system has been compiled and is available at the end of this page.
The new system will be composed of a backbone managed by the AB/RF group, and a receiver crate installed in the experiments, converting the RF timing signals into TTC compliant Bunch Clocks and Orbits.
RF timing signals:
Three Bunch Clock signals (one for each ring plus one reference clock) will be transmitted, as well as one orbit per ring.
|450GeV equivalent||400.788790 MHz||400.784139 MHz|
|7 TeV equivalent||400.789658 MHz||400.789639 MHz|
TTC equipment in the experiments:
The equipment installed in the experiment is basically a receiver crate, composed of:
Support and maintenance:
Fibre installation - all the fibres are installed since December 2007:
2006 test beam:
Updated price of the system per experiment:
Previous scheme (with Analogue Tx and Rx):
Note: this scheme does not include, neither the spares for Tx and Rx, nor the cost of the fibre patching.
Note: table extracted from the agreement on TTC upgrade signed on November 2005.
New scheme (with Digital Tx and Rx):
|2Tx modules (=6 lasers)||3kCHF||6kCHF||worst scheme considered: the attenuation is too high and we have to implement 2Tx modules per experiment.|
|2Rx modules + 1 hot spare||2kCHF||6kCHF|
|Fibres (patchs, splitters)||2kCHF||2kCHF||estimation|
|Total per experiment||23kCHF||Worst case for the transmission (no split), and including 20% for the spares and one hot spare in the experiments|
Last Updated by Sophie BARON on 29/09/2008 11:07