new opportunities in the physics landscape at cern
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10-13 May 2009. New Opportunities in the Physics Landscape at CERN. Antiproton Decelerator (AD) Summary and Prospects. Klaus Jungmann, KVI, University of Groningen, NL. Physics Motivation Unique Possibilities Tests of Fundamental Theories Precision Measurements - PowerPoint PPT PresentationTRANSCRIPT
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Klaus Jungmann, KVI, University of Groningen, NL
Antiproton Decelerator (AD)Summary and Prospects
10-13 May 2009
P P
?
• Physics Motivation • Unique Possibilities• Tests of Fundamental Theories• Precision Measurements• Novel Techniques and Instrumentation • Applications• High Visibility
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Physics Motivation
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How do we work in Physics ?
First Theory on Gravity
Sir Isaac Newton
(1642 - 1727)
Basic Principles on which Scientists work in Physics
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May-June 2006 FANTOM Study Week Gent 2007
A Theory is only as good as it is experimentally verified.
A Theory without experimental verification has no standing.
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• Excellent Description of ALL Observations • However, many Open Questions
Why 3 generations ? Why some 30 parameters? Why one electric charge ? What about CP violation ? Why matter-antimatter asymmetry? …..
• Gravity not included
No Combind Theory of Gravity and Quantum Mechanics.
• Contents of the Cosmos What’s the other 96% beyond matter ?
The Standard Model(s)
Dark Matter – Dark Energy …
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?
Grand Unification
not yet known?
Gravitation
StrongStrong
Magnetism
Electricity
Weak
Electro-Magnetism Electro - Weak
Standard Model
b+
ne
- +
N S
u ud
d ud
m- zX e-
?
Physics within the Standard Model: complex systems, spectra, lifetimes…
Standard Model in Particle Physics
Physics outside the Standard Model: new phenomena, new particles…
Speculative Models:Supersymmetry, Cold dark matter, Tachyons, Radiative muon generation,
Technicolor, Leptoquarks, Extra gauge bosons, Extra dimensions, LeftRight Symmetry, Compositeness, Lepton flavour violation, ….
Þ No Status in Physics , yet: “Not Even Wrong”
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complementary approaches
Precision FrontierDirect Search Frontier
Experiments at the Frontiers of Standard Theory
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Test of Fundamental SymmetriesPrecison Measurements
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Since then CERN has a HIGHLY PUBLICLY VISIBLE program
on Low Energy Precision Tests of most fu
ndamental theories
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Proton and Antiproton q/m compare to 0.1 ppb
Clock Comparisons
Proton and Antiproton gravitational accceleration
equal to 1 ppm
p and pbar charge to mass ratio (circles) p and pbar inertial mass ratio (squares)
Highly precise CPT & Gravity TestsPrecision requires Time
pbar-p q/m 45 yearselectron g-2 60 yearsmuon g-2 45 yearsmuonium 1s-2s 15 years
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Verifications of CPT SymmetryTests of particle/antiparticle symmetry (PDG)
Inconsistent definition of figure of merit: comparison difficult Pattern of CPT violation unknown (P: weak interaction, CP: mesons)
→ Arbitrary number joggling to get “accuracy” better than experiments !!!
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CPT – Violation & Lorentz Invariance Violation
μqA
μiiD
0ψ)Dμγ5
γμν
idνDμγμν
icμνσμν
H21μγ
5γ
μbμγ
μam
μDμ(iγ
equation DIRAC violatingLorentz and CPT generic
-
----
m
n
Invariance LorentzbreakH,d,c,b,a μνμνμνμμCPTbreak b,a μμ
Kostelecky et al.: Interaction with a finite strength Figure of merit energy based
→ Completely different systems appear much more interesting !
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Verifications of CPT symmetry
Tests of particle/antiparticle symmetry (PDG)Using the Kostelecky et al. Standard Model Extension scheme Mass [eV]
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Different methods available to produce
Antihydrogen
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Scientists Create 'Star Trek' Antihydrogen in QuantityBy Alex DominguezAssociated Pressposted: 02:59 pm ET18 September 2002
ATHENA ATRAP
Physical Review Letters 89, 213401 online (2002)
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Laser spectroscopy 1s-2s -------- Microwave spectroscopy 1s Hyperfine Structure
R= mec2 *a2/2 h
Dn1s2s= ¾ *R+eQED+enucl +eweak + eCPT
“Long distance” Interaction “Contact” interaction
DnHFS= cons. *a2 R+eQED+enucl +eweak + eCPT
(Anti-)Hydrogen CPT Tests
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(Anti-)Hydrogen Spectroscopy*
Hydrogen 1s-2s Saturation Intensity Is = 0.9 W/cm2Excitation Rate Re = 4p*84*(I/W/s*cm2)2/Dn/HzPhoto Ionization Rate Rp = 9*I/W/s*cm2
Zeeman shift dnZ = 9.3*B Hz/Tac Stark shift dnac = 1.7*I Hz /W*cm2
Velocity at 1mK V1K = 4 m/sTime-of-flight broadening DnTOF = 3 kHz (1 mK, 600 mm beam diam.)
Lyman a detection efficiency 10-6 = * effMCP (= 10-4 * 10-2)
1011 H-atoms (MIT Bose condensation) dn/n1s2s = 10-13 (1s integration time)
Just one Problem: Lyman-a detection via field quenching => atoms can be used once only (all 1s, mF states get equally populated)Line center accuracy in absence of systematic errors:
dn Dnexp. / (Sign./Noise) Dnexp. / Nparticles
* numbers verified with L. Willmann Antihydrogen experiments benefit fr
om
more particles
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pH Ground-state Hyperfine Structure
from B. Juhasz
SIMULATIONNeed less particles ( 2 pH / s ) because of narrow natural linewidth
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pHe+ Atom – a naturally occurring trap for antiprotons
• Serendipitously discovered by Tokyo group at KEK• 3-body system, Metastable• ~ 3% of stopped antiprotons survive with average lifetime of ~ 3 ms• Precision laser spectroscopy by ASACUSA: - best test of 3-body QED theories - proton-antiproton mass & charge comparison (PDG)• Enters CODATA constant adjustment significantly
Hayano, Yamazaki et al.
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Progress in atomcule spectroscopy
year
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CPT Tests @ CERN AD
At the CERN AD a number of unique, important CPT tests were already conducted and improved ones are on their way :
• ASACUSA pHe , pHe+ , pH , p
• ATRAP p , pH
• ALPHA pH
One can expect significant steering of Model Building and High Visibility next to a robust discovery potential.
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Hydrogen
F=m*g F=m*g ?
F= - m*g ?
(Anti-)Hydrogen Gravity Tests
Unique Possibility• Lyman –a laser required• Lyman –a laser developed
The Remaining eagerly awaited Gravity Test
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Gravity Tests @ CERN ADAt the CERN AD is the place to answer the most urgent question on antimatter gravity :
• AEGIS pH
• ATRAP pH
• Free Fall pH
One can expect an answer to a most fundamental questionto question, which only can be answered by experiment! High Visibility next to a robust discovery potential.
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Standard Model PhysicsApplications
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Antiprotonic Radioactive AtomsProcess Observable Deduced
quantityPhysics
Capture in high orbit (atomic x-sections), cascade
Antiprotonic x-rays O(MeV)
Annihilation orbit, energy shifts
Matter distributions, neutron vs. protons on nuclear surface, …Annihilation (n>7) on
peripheral nucleonDe-excitation g, particles, daughter activity
n vs. p annihilation
VOLUME 87, NUMBER 8 P H Y S I C A L R E V I E W L E T T E R S 20 AUGUST 2001
Neutron Density Distributions Deduced from Antiprotonic Atoms
A. Trzcin´ska, J. Jastrze ¸bski, and P. Lubin´skiHeavy Ion Laboratory, Warsaw University, PL-02-093 Warsaw, Poland
F. J. Hartmann, R. Schmidt, and T. von EgidyPhysik-Department, Technische Universität München, D-85747 Garching, Germany
B. KlosPhysics Department, Silesian University, PL-40-007 Katowice, Poland
(Received 28 March 2001; published 2 August 2001)
Highest Uncertainty Arising from Theory
ASACUSAusing RFQD &MUSAHI
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Antiproton Radio-Therapy
A significant win (factor ~4)in a sensitive window fortumor treatment and healthy tissue sparingCarbon Antiprotons
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Physics within Standard Model and Applied Research@ CERN AD
At the CERN AD also SM physics and Applied Research isconducted:
• ASACUSA p-nucleus annihilation, atomic collisions
• Double-Strangeness p-nucleus dedicated experiment Production
• PAX p polarization, p – p interactions
• ACE p radiation-therapy
• … …One can expect deeper insights and the development ofnovel techniques to the benefit of physics and society.
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Antiproton Sources
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Antiproton Decelerator (AD) @ CERN• Started operation July 6, 2000 Antiproton capture, deceleration,
cooling• Pulsed extraction• Many Experiments
– ASACUSA– ATRAP – ALPHA – AEGIS– Free Fall– PAX– ACE– …..
• Request for more and better antiproton beams
– To speed up progress– To boost accuracy
ELENA
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Consequent Future Development
ELENA@CERN
ELENA provides 10-100 times more particles
?Possible Option? TSR@MPIK(Heidelberg) ELENA ??
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FLAIR
NESR
Factor 100 more pbar trapped or stopped in gas targets than now
FLAIR @ /FAIR
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New Facilities @ CERN AD or GSI/FAIR
New Facilities can provide up to 100 times more particles:
• MUSASHI ASACUSA ‘s device to recycle p’s
• ELENA Generic low cost CERN solution, Start possible now
• FLAIR GSI/FAIR solution not before 2015
One can expect faster progress and better results from more p’s
→ CERN and GSI should synchronize
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Summary and Conclusions Highly Motivated Urgent Antiproton Experiments
with robust Discovery Potential and High Visibility CPT, Gravity, Determination of Fundamental Constants, SM Physics, Applications (Therapy)
Unique Facility worldwide until beyond 2015 Creative and Innovative Increasing Community
Young people Novel Techniques and Novel Technology
Physics Program good on Time Path Physics Program needs more particles
→ ELENA well motivated
Productive and Prosperous Future Ahead
Low Energy Antiproton contributions to Physics just started
Precision takes Time C
are and Particles
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Thank YOU !