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Broadcast , even if improvable, can be a showstopper.

Broadcast , even if improvable, can be a showstopper. It needs to be implemented in order to be 100 % sure that it will not be a showstopper at all. The safest would be to have point-to-point connection from on-shore with the nodes and use the WR switch in standard way.

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Broadcast , even if improvable, can be a showstopper.

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  1. Broadcast, even if improvable, can be a showstopper. • It needs to be implemented in order to be 100 % sure that it will not be a showstopper at all. The safest would be to have point-to-point connection from on-shore with the nodes and use the WR switch in standard way. • Two actions were proposed in the last CLB meeting to be raised to the SC: • To approve the 7S quotation to start to implement broadcast and other developments on the On-shore station together with Demokritos asap. • To start a discussion with the optic group to see the implications to change the fibres in the sites to allow point to point. Already some informal contacts have been done.

  2. Alsoitisneededthefollowing material tofollowwiththe CLB development: 4 WR switches They can be usedlatterontheon-shore station 4 WR starting kits (Itcontainstwo WR nodes– Specboards) + SPF accesories: To be usedonlyonthedeveloppingphase. The WR starting kit replacethe single desmostratorproposedby 7S in thefirstpricequotation One WR stating kit fundedbyBologna. Therest of material already.

  3. The main miles stones of the planning prepared in the CLB workshop celebrated in Valencia are: Middle December -> 6 prototypes produced End April -> Preserieof 50 boards (36 to be used on the two first strings?) End July -> Preserieof 150 boards (to follow with strings integration?) 1.- Planning very, very tight. 2.- To delivery boards of preserie of 50 for starting in July DOM integration implies: No reliability at all The quality of the boards will be of lower quality that the PPM-DU CLBs (See in the document the “bricolage” perform on the CLBs of the PPM-DU 3.- To delivery boards of preserie of 150 at the end of July implies: Boards of low reliability Probably of a similar quality of the PPM-DU CLBs 4.- Integration with these quality levels will be difficult 5.- Quality of the boards only can be assured after the PRR (September-October 2014)

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