Friends,
With reference to the CERN collaboration paper titled, "Measurement of
the neutrino velocity with the OPERA detector in the CNGS beam"
On 23 Feb 2012, CERN authorities released the following statement:
"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."
Let me share with you some background information regarding this
development.
A. On 18 Dec 2011, I sent the following message to Dr D. Autiero, the
corresponding author of the CERN paper.
{Reference subject paper and reference [40] thesis titled,
"Neutrino velocity measurement with the OPERA experiment in the CNGS
beam"
Dear Dr Autiero,
Keeping in view the immense significance of your subject paper,
currently under review for publication in JHEP, kindly permit me to
bring some critical observations to your notice for improving the
content and quality of the said paper.
1. With reference to section 7. Data analysis (pp 16), "The data
analysis was performed blindly by deliberately assuming the setup
configuration of 2006."
The details of the assumed 'setup configuration of 2006' are not
available anywhere. Kindly provide these details.
2. With reference to section 8. Final results (pp24), "The 353 ns
relative to the 2006 calibration assume the relative synchronization
of the CERN and LNGS GPS systems prior to the installation of the two
high-accuracy systems operating in common-view mode."
The -353 ns correction relative to 2006 calibration appears to
be an ad-hoc figure which directly influences the final result of the
experiment. There is no justification or basis provided in the paper
for assuming it in the blind analysis conducted in 2011. Further, as
reported in reference [40], section 5.3 (pp 94), the two GPS receivers
were brought to one location in 2006 to compare their performance in
close-by position. The measurement showed that there was an offset of
355 ns between the two clocks which was attributed to uncompensated
internal and antenna delays on the LNGS clock. After correcting for
the uncompensated delays, the relative synchronization error between
the two clocks was brought within 23 ns. In a new calibration campaign
in July 2007, with a portable primary standard Cs4000 atomic clock,
the synchronization mismatch between CERN and LNGS was found to be
about 424 ns. "The phase of the Cs4000 had been measured with respect
to the XL-DC before leaving CERN and it was measured again with
respect to Clock2 once arrived at LNGS. The two phases were within 424
ns." This was an important result showing an absolute synchronization
mismatch of 424 ns between two GPS receivers located at the ends of
the baseline, which needed to be discussed in some detail. The crucial
point is that how could the two GPS receivers providing system UTC
time, with known accuracy level of about 100 ns, show the
synchronization mismatch of more than 400 ns?
3. Apparently in view of such high synchronization mismatch between
two old GPS receivers, two new PolaRx2e GPS receivers with Cs4000
clocks were installed to correct continuously the erratic behavior of
the two old GPS systems, so as to achieve an accuracy of 1 ns in the
mutual synchronization of clocks at the two ends. However, figure 9.1
of the reference [40] shows that the OPERA event times are still being
corrected for the synchronization mismatch of the order of -240 ns
between CERN and LNGS. Such high order of synchronization mismatch,
with fluctuations of about 60 ns, needs to be discussed and justified
in the paper. Further, this synchronization mismatch between two
PolaRx2e GPS receivers at CERN and LNGS must be cross-checked through
absolute calibration with a portable primary standard Cs4000 atomic
clock, as was done in July 2007. If this absolute synchronization
mismatch between the two system times is still found to be of the
order of 300 or 400 ns then the integrity of the final result of the
subject experiment must be questioned.
4. The system UTC time at CERN and LNGS continues to be provided by
two standard GPS receivers, fitted with Rubidium clocks, with an
overall accuracy of about 100 ns. However, the induction of additional
high accuracy PolaRx2e GPS receivers with Cesium clock (for providing
synchronization corrections), cannot be expected to improve the
overall accuracy of system time measurements. For example, if a system
time of t±100 ns is corrected with a precision synchronization
correction of dt±1 ns, the corrected value of (t+dt) will still have
an overall accuracy of the order of ±100 ns. Then how come, by still
using the old GPS receivers to provide system UTC time at CERN and
LNGS with an accuracy of ±100 ns, the final result of the experiment
is declared with an accuracy within 10 ns?
You are requested to kindly review/revise your paper in the light of
above observations and if possible you may share your views with me.}
B. On 07 Feb 2012, I sent a separate message to relevant authorities
of CERN, including Dr. D. Autiero, forwarding a preprint copy of my
paper titled "Neutrino Speed Anomaly and the Absolute Motion".
https://sites.google.com/a/fundamentalphysics.info/book/Home/book_files/Neutrino_anomaly_WS2.pdf?attredirects=0&d=1
In this message I had stressed the following points:
1. In July 2007, the synchronization mismatch between CERN and LNGS
was found to be about 424 ns with a portable primary standard Cs4000
atomic clock. This measured synchronization mismatch, with diurnal
variations, between the two GPS receivers presented first solid
evidence of Sagnac effect associated with absolute motion which could
not be analyzed or explained in the CERN paper.
2. In 2008, two new PolaRx2e GPS receivers, with Cesium (Cs) clocks,
were installed as additional systems at CERN and LNGS to correct the
purported erratic behavior of the two old GPS systems. However, as
shown at Fig. 9.1 of the Ref. 4, the OPERA event times are being
corrected for the synchronization mismatch of the order of - 240 ns
between CERN and LNGS. Such an high order of mismatch between the UTC
times at CERN and LNGS, with diurnal fluctuations of about 60 ns,
presented second solid evidence of Sagnac effect associated with
absolute motion which could not be analyzed or explained in the CERN
paper.
3. When two clocks A and B are synchronized through a GPS satellite in
common view, the Sagnac effect of absolute motion of the baseline AB
induces a full e-synchronization between the clocks. If U_ab is the
component of absolute velocity along the line segment AB, the
synchronization time offset between the two clocks is such that the
leading end clock (B) lags behind the trailing end clock (A) by an
amount D.U_ab/c^2.
4. The neutrino speed anomaly is the combined result of:
a. Sagnac effect of absolute motion, both on GPS clock
synchronization as well as on neutrino flight time.
b. Partial e-synchronization of CERN and LNGS clocks through all in
view GPS satellites.
5. The Sagnac effect of absolute motion may be practically
demonstrated through quantitative measurements of time offsets induced
by GPS synchronization of clocks in common view mode. For this
purpose, the PolaRx2e geodetic GPS receivers, along with Cs clocks,
can be delinked from the CERN and LNGS system networks and
independently set to synchronize with the GPS system time through a
common satellite in view. After the Cs clocks of the PolaRx2e
receivers are synchronized and locked to the GPS time at both ends of
the baseline, their mutual synchronization mismatch can be measured
with a portable precision atomic clock such as Symmetricom’s SA.45s
CSAC. The difference between these offset readings at CERN and LNGS
will provide the absolute synchronization offset between CERN and LNGS
which is expected to be of the order of about 800 to 1000 ns.
6. Detection of absolute motion through measurement of
synchronization mismatch between the GPS synchronized Cs clocks at
CERN and LNGS will therefore invalidate the second postulate of SR.
From the foregoing it appears that the CERN authorities have
initiated 'damage control operations' but are still not mentally
prepared to conduct the simplest possible timing check listed at point
5. above for fear of shattering Relativity permanently.