[time-nuts] Fast than light neutrino
EWKehren at aol.com
EWKehren at aol.com
Sun Sep 25 08:30:32 UTC 2011
Fiber has to follow the curvature of the earth I do not think neutrinos
do. Bert
In a message dated 9/25/2011 4:08:42 A.M. Eastern Daylight Time,
magnus at rubidium.dyndns.org writes:
On 25/09/11 08:35, Javier Serrano wrote:
> On Sun, Sep 25, 2011 at 1:36 AM, Magnus Danielson<
> magnus at rubidium.dyndns.org> wrote:
>
>>
>> I was about to ask for the specific papers of time calibrations, even if
>> the overview presentation indicates that the verification steps I
expect to
>> be there have been done. Also the path calibrations needs to be
described
>> more in detail than in the paper.
>>
>
> I'll discuss with Pablo to see how we can put more stuff on the web.
>
>
>>
>> First thought was that someone forgot to compensate for GPS antenna
cable
>> delays.
>>
>
> We did not forget. The two GPS calibration campaigns (zero baseline and
> portable receiver) were done with antenna and antenna cable included.
I assumed so from the statements relating to time, in particular the PTB
time transfer test proving a 2,3 ns difference. Which still doesn't
satisfy my curiosity.
A 60 ns offset between the sites would account for the "missing time".
Similarly a 18 m shorter distance would also account for the "missing
time". Due to the large distance I would start in that end to ensure it
works.
This article puts focus into precission time-transfer between two sites.
>>
>> Do you have direct fiber between the locations?
>>
>
> You mean between CERN and Gran Sasso? No, but that's certainly something
we
> could explore for the future.
A fiber-based time-transfer would be nice complementary as it would
provide an independent timing path.
Cheers,
Magnus
_______________________________________________
time-nuts mailing list -- time-nuts at febo.com
To unsubscribe, go to
https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
More information about the time-nuts
mailing list