Milestones and Reminiscences: A Journey Through Particle Physics Experiments
Daya Bay
L. Littenberg
Daya Bay Close of Operations
•
Last Friday marked the close of operations of one of the most
impactful particle physics experiments of the last couple of decades,
and one in which BNL played a pivotal role.
This week’s events
•
This milestone led to commissioning a number of presentations:
•
Three today –
•
Why is non-zero theta13 important
– Julia Gehrlein
•
Early history of Daya Bay and BNL involvement
– Steve Kettell
•
Discovery of non-zero theta13 at Daya Bay in 55 Days
– Chao Zhang
•
One Thursday at 3pm
•
A Decade of Discoveries by the Daya Bay reactor neutrino experiment
– David Jaffe
A few personal reminiscences about the other end …
•
2005 was a very difficult year for the Electronic Detector Group
•
We’d had a proud history in the study of kaon decays.
•
We’d assembled a remarkably strong cadre of physicists.
•
But one by one our experiments had been canceled…
7 Nov 05
L. Littenberg Flavour in the ERA of
the LHC
5
BNL AGS E949 K
+
+
A few personal reminiscences about the other end …
•
2005 was a very difficult year for the Electronic Detector Group
•
We’d had a proud history in the study of kaon decays.
•
We’d assembled a remarkably strong cadre of physicists.
•
But one by one our experiments had been canceled.
•
That summer, the NSF MREFC
R
are
S
ymmetry
V
iolating
P
rocesses
was
canceled too, taking with it, our last surviving initiative,
KOPIO
7 Nov 05
L. Littenberg Flavour in the ERA of
the LHC
7
KOPIO K
L
0
at BNL
Outlook
•
Had a little margin, important data to analyze, other involvement
•
But the writing was on the wall.
Outlook
•
Had a little margin, important data to analyze, other involvement
•
But the writing was on the wall.
Considered Alternatives
•
Kaon experiment at Fermilab?
•
Kaon experiment at CERN?
•
Kaon experiment in Japan?
•
Neutrino experiment at Fermilab (already somewhat involved)
•
Muon experiment at Fermilab?
Nothing gelled
The Visit
•
In the fall, Kam-Biu Luk visited, pushing a reactor experiment in China
•
Initially not my favorite,
•
Never studied neutrinos – industrial strength experiments
•
Precision required (effect possibly ~1%), personally incompetent
•
Neutrinos just seemed to complicated -
The Visit
•
In the fall, Kam-Biu Luk visited, pushing a reactor experiment in China
•
Initially not my favorite,
•
Never studied neutrinos – industrial strength experiments
•
Precision required (effect possibly ~1%), personally incompetent
•
Neutrinos just seemed to complicated -
The Visit
•
In the fall, Kam-Biu Luk visited, pushing a reactor experiment in China
•
Initially not my favorite,
•
Never studied neutrinos – industrial strength experiments
•
Precision required (effect possibly ~1%), personally incompetent
•
Neutrinos just seemed to complicated –
•
But then my colleagues explained things to me.
•
The reactor experiment was much simpler.
•
Could be looked at as a check on whether reactor neutrinos obey the inverse
square law.
Reactor Experiment Reduced to Its Essence
Same Rate?
Reactor
core
Detector 1
Detector 2
The Visit
•
In the fall, Kam-Biu Luk visited, pushing a reactor experiment in China
•
Not my favorite,
•
Never studied neutrinos – industrial strength experiments
•
Precision required (effect possibly ~1%), personally incompetent
•
Neutrinos just seemed to complicated –
•
But then my colleagues explained things to me.
•
The reactor experiment was much simpler.
•
Could be looked at as a check on whether reactor neutrinos obey the inverse
square law.
•
Even the relation between any deviation and the parameter you were trying
to measure was pretty manageable.
The Decision
•
After this, it wasn’t hard to decide to pursue such an experiment, which
really was a remarkable opportunity.
•
As you will hear, it occupied a central role in the emerging picture of
neutrino behavior, which seemed to be the first unambiguous deviation
from the Standard Model of particle physics.
•
It was well-aligned with the interest of several of the group members.
•
It made excellent use of the considerable skills of the group in designing,
building, operating and analyzing experiments.
•
Of course, the funding agency still had to be convinced to go forward
with the experiment.
Back to this week’s events
•
Three today –
•
Why is non-zero theta13 important
– Julia Gehrlein
•
Early history of Daya Bay and BNL involvement
– Steve Kettell
•
Discovery of non-zero theta13 at Daya Bay in 55 Days
– Chao Zhang
•
One Thursday at 3pm
•
A Decade of Discoveries by the Daya Bay reactor neutrino experiment
– David Jaffe
The close of operations at Daya Bay marked a significant event in particle physics, with BNL playing a pivotal role. A series of presentations followed, reflecting on the importance of non-zero theta13 and the early history of Daya Bay. Personal reminiscences shed light on the challenges faced by the Electronic Detector Group in 2005, while highlighting the impact of canceled experiments. The outlook for the group was uncertain, signaling a need to explore alternative avenues, such as the Kaon experiment at Fermilab.
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Presentation Transcript
Daya Bay L. Littenberg
Daya Bay Close of Operations Last Friday marked the close of operations of one of the most impactful particle physics experiments of the last couple of decades, and one in which BNL played a pivotal role.
This weeks events This milestone led to commissioning a number of presentations: Three today Why is non-zero theta13 important Julia Gehrlein Early history of Daya Bay and BNL involvement Steve Kettell Discovery of non-zero theta13 at Daya Bay in 55 Days Chao Zhang One Thursday at 3pm A Decade of Discoveries by the Daya Bay reactor neutrino experiment David Jaffe
A few personal reminiscences about the other end 2005 was a very difficult year for the Electronic Detector Group We d had a proud history in the study of kaon decays. We d assembled a remarkably strong cadre of physicists. But one by one our experiments had been canceled
BNL AGS E949 K++ DOE L. Littenberg Flavour in the ERA of the LHC 7 Nov 05 5
A few personal reminiscences about the other end 2005 was a very difficult year for the Electronic Detector Group We d had a proud history in the study of kaon decays. We d assembled a remarkably strong cadre of physicists. But one by one our experiments had been canceled. That summer, the NSF MREFC Rare Symmetry Violating Processes was canceled too, taking with it, our last surviving initiative, KOPIO
KOPIO KL0 at BNL L. Littenberg Flavour in the ERA of the LHC 7 Nov 05 7
Outlook Had a little margin, important data to analyze, other involvement But the writing was on the wall.
Outlook Had a little margin, important data to analyze, other involvement But the writing was on the wall. Your Group is Expensive
Considered Alternatives Kaon experiment at Fermilab? Kaon experiment at CERN? Kaon experiment in Japan? Neutrino experiment at Fermilab (already somewhat involved) Muon experiment at Fermilab? Nothing gelled
The Visit In the fall, Kam-Biu Luk visited, pushing a reactor experiment in China Initially not my favorite, Never studied neutrinos industrial strength experiments Precision required (effect possibly ~1%), personally incompetent Neutrinos just seemed to complicated -
The Visit In the fall, Kam-Biu Luk visited, pushing a reactor experiment in China Initially not my favorite, Never studied neutrinos industrial strength experiments Precision required (effect possibly ~1%), personally incompetent Neutrinos just seemed to complicated -
The Visit In the fall, Kam-Biu Luk visited, pushing a reactor experiment in China Initially not my favorite, Never studied neutrinos industrial strength experiments Precision required (effect possibly ~1%), personally incompetent Neutrinos just seemed to complicated But then my colleagues explained things to me. The reactor experiment was much simpler. Could be looked at as a check on whether reactor neutrinos obey the inverse square law.
Reactor Experiment Reduced to Its Essence Detector 2 Detector 1 Reactor core Same Rate?
The Visit In the fall, Kam-Biu Luk visited, pushing a reactor experiment in China Not my favorite, Never studied neutrinos industrial strength experiments Precision required (effect possibly ~1%), personally incompetent Neutrinos just seemed to complicated But then my colleagues explained things to me. The reactor experiment was much simpler. Could be looked at as a check on whether reactor neutrinos obey the inverse square law. Even the relation between any deviation and the parameter you were trying to measure was pretty manageable.
The Decision After this, it wasn t hard to decide to pursue such an experiment, which really was a remarkable opportunity. As you will hear, it occupied a central role in the emerging picture of neutrino behavior, which seemed to be the first unambiguous deviation from the Standard Model of particle physics. It was well-aligned with the interest of several of the group members. It made excellent use of the considerable skills of the group in designing, building, operating and analyzing experiments. Of course, the funding agency still had to be convinced to go forward with the experiment.
Back to this weeks events Three today Why is non-zero theta13 important Julia Gehrlein Early history of Daya Bay and BNL involvement Steve Kettell Discovery of non-zero theta13 at Daya Bay in 55 Days Chao Zhang One Thursday at 3pm A Decade of Discoveries by the Daya Bay reactor neutrino experiment David Jaffe
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