Neutrina asi vyresena

Daniel Valuch daniel.valuch na orange.fr
Čtvrtek Únor 23 10:05:38 CET 2012


uvidime, zle dotiahnuty konektor dokaze divy. Viem si predstavit sposob 
akym by mohol teoreticky oneskorit pulz o desiatky ns, ale je to v 
rovine cistej spekulacie a pravdepodobnejsie by bolo ze by som vyhral 
sportku :-)
V kazdom pripade uz vysla prva oficialna sprava, ktora tomu pridava este 
viacej zahady:
The OPERA collaboration has informed its funding agencies and host 
laboratories that it has identified two possible effects that could have 
an influence on its neutrino timing measurement. These both require 
further tests with a short pulsed beam. If confirmed, one would increase 
the size of the measured effect, the other would diminish it. The first 
possible effect concerns an oscillator used to provide the time stamps 
for GPS synchronizations. It could have led to an overestimate of the 
neutrino's time of flight. The second concerns the optical fibre 
connector that brings the external GPS signal to the OPERA master clock, 
which may not have been functioning correctly when the measurements were 
taken. If this is the case, it could have led to an underestimate of the 
time of flight of the neutrinos. The potential extent of these two 
effects is being studied by the OPERA collaboration. New measurements 
with short pulsed beams are scheduled for May.




On 2/23/2012 07:01, Šerých Jakub wrote:
> Hlavne si nedovedu predstavit, ze by nedotazeny opticky konektor dokazal pro digitalni signal vytvorit zpozdovaci linku 60ns, (coz odpovida pruchodu svetla odhadem cca 13m optickeho kabelu). Zatim nechavam chladnou hlavu a cekam, ze vyzkumy budou pokracovat.
>
> Jakub Serych
>


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