Neutrina asi vyresena

[Ales Prochaska]

Nemate nekdo odkaz na clanek jak zamerovali ten detektor v podzemi? Ja
to jednou cet ale od te doby to nemuzu znova najit. Ten postup mi
prisel nejaky cely ujety, ale rad bych si to znova precet nez do toho
zacnu kafrat :-)

Ales Prochaska

> ale vtipne je ze tam spominaju ze identifikovali dva potencialne zdroje
> chyby. Ked odstrania jeden tak sa cas este predlzi a ked odstrania druhy
> tak sa skrati. A mozno ked odstrania obidva tak budeme zase tam kde sme
> boli :-)

> On 2/23/2012 10:53, Pavel Troller wrote:
>> A to mame cekat do kvetna ? Nemeli by tu jisti nejmenovani clenove
>> vse potrebne ve svych garazich, abychom si to zmerili sami :-) ?
>>
>>    Zdravi Pavel
>>
>>> 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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