Manchester and STFC and Particle Physics Roger Barlow September 7 th 2007.
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Transcript of Manchester and STFC and Particle Physics Roger Barlow September 7 th 2007.
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Manchester and STFCand
Particle Physics
Roger Barlow
September 7th 2007
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ResearchManchester
UniversitySTFC
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Research Manchester
UniversitySTFC ParticlePhysics
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Manchester Particle Physics A unique integrated group
over 100 strong
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Large AND successful Group
Esteem Indicators• Spokesman for D0 (Wyatt)• Run Coordinator for ATLAS (Wengler)• Chair of PPGP (Lafferty)• Spokesman for FP420 (Cox)• Physics coordinator for D0 (Söldner-Rembold)• Chair of IoP HEPP group (Barlow)• TV appearances (Cox)• …..
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Concentrate on aspects of our activity
most relevant for today’s visit: those where we interact with ex-CCLRC part of STFC, such as detector construction.
All our achievements in organisation and leadership and production of physics results will be largely ignored in this talk. Next visit?
However…
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Building Experiments: history
Design and construction in-house of large drift chambers
JADE, OPAL, H1
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Built half the endcap calorimeter
(in conjunction with Daresbury)
CP violation in B sector observed – and comprehensively measured
300+ papers
•
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Trigger hardware and softwareAnalysis (first D0 Run II paper
by Söldner-Rembold)Leadership (spokesman,
physics co-ordinator)
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Silicon tracker
Modules assembled ahead of time and better than spec.
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Large team based at CERN (Wengler) leading trigger design to ensure that interesting events (top quarks) are not rejected
(needle in haystack problem)
Trigger
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Tomorrow’s Experiments
SuperNEMOPrototyping drift tubes for module
construction
CALICEAssembly of 40,000 (?) silicon pads
FP420 - more later
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Experiment: Electronics
• Electronics labs and engineers
• Design circuits
• Design circuit boards – routing software
• Build circuits – bonding machine
• FPGA programming
Newly refurbished labs
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Experiment - future
Brunel group (Watts and DaVia)
3D silicon – for FP420 and ATLAS upgrade
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particle
PLANAR
i
~ 500 mm
Active edge ~4m
p+
n+
------
++++
++++
--
--
++
30
0
m
50 m
3D
n+p+ n+n+n+ p+ p+p+ n+
3D versus planar3D versus planar
--
--
--
--
--
--
++++
++++
++
Manchester/Stanford Collaboration
Transfer to Industry in
progress – SINTEF
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0
20
40
60
80
100
0 5 1015 1 1016 1.5 1016 2 1016
Sig
nal
eff
icie
ncy
[%
]
Fluence [n/cm2]
0 8 1015 1.6 1016 2.4 1016 3.2 1016
Fluence [p/cm2]
3D silicon C. DaVia et a. March 06
Diamond W. Adam et al. NIMA 565 (2006) 278-283
n-on-p strips P. Allport et al.IEEE TNS 52 (2005) 1903
n-on-n pixels CMS T. Rohe et al. NIMA 552(2005)232-238
C. Da Via'/ Aug.06
3x1015 p/cm2 = 10 years LHC at 1034 cm-2s-1
At r=4cm
1.8 x 1016p/cm2 = 10 years SLHC at 1035cm-2s-1
At r=4cm
Radiation HardnessRadiation Hardness Cinzia DaVia – Hiroshima Conf. 2006
World Recordfor a silicon detector !!
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Experiment: summary
We have mechanical and electronic expertise.
Clean rooms and equipment in the group
Large Workshops in the School
An STFC (ex CCLRC)+ University partnership is not as simple as engineering+physics.
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Theory
• QCD (Dasgupta, Forshaw, Seymour, Shaw)– Exploring new phenomena in QCD and applying to experiment
(e.g.FP420)– Understanding gluon radiation. Crucial at the LHC, e.g. in Higgs
production and other ‘New Physics’ processes– Simulating particle collisions: mused by all experiments as a
crucial part of their analysis (Herwig++)• New Physics (Pilaftsis, Forshaw)
– Anticipating and preparing for the LHC: supersymmetric phenomena, Higgs bosons and the origin of mass
– Understanding a universe with extra dimensions– Particle Physics in the early universe– Links to the astronomy group through common interest in
cosmology, inflation, CMB, dark matter, dark energy
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Theory/Experiment
• Joint papers– Simulations of possible theories and their
experimental consequences
• Joint students– Very successful
• Crossovers (Schwanenberger, Peters)
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Accelerators
Part of Cockcroft Institute
2 additional appointments (3rd ongoing)
5 RAs, 3 students. Rapid growth continues
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Accelerators
Original purpose strongly aligned to ILC
RF, Beam optics, Beam dumps, collimators
Deeply embedded with ASTeC group at Daresbury
Now generalising to CLIC
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Accelerators
Lead nsFFAG
project (£8M
Basic Technology).
EMMA now under construction at Daresbury.
Working with ASTeC + Daresbury + RAL + JAI + medics
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Post-accelerated beams with the REX-ISOLDE (Radioactive Beam EXperiment On-Line Isotope Mass Separator)
HIE-ISOLDE
HIE-ISOLDE
HIE-ISOLDE In the first step: increase in REX energy from 3 to 5.5 MeV/u and later to 10 MeV/u, Proton Intensity 2 6 ASoI for HIE-LINAC (SC linac to 5.5 MeV/u) submitted by consortium of Cockcroft, Daresbury, and Universities. Jones and Butler(Liverpool) Co-PIs
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A specific example: FP420
• Higgs production at LHC through glancing proton collisions
• Signalled by ‘rapidity gaps’ – emptyregions of the detectors – and outgoing protons
• . Experimentally observed at HERA (Cox), understood and simulated (ExHuME, Pomwig, ktJet) by Manchester physicists (Cox, Forshaw, Pilkington, Pilaftsis)
H
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FP420
Diffractive protons measured by small precise detectors 420 m downstream (3D Silicon for Radiation hardness) close to beam (Watts, DaVia)
• Effects of detectors and beampipe modifications on LHC beam must be shown to be negligible (Jones, Potter)
• Manchester experiments + theory + accelerator groups working in combination
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eScience
Grid Software (Andrew McNab and GridSite)
Working with Manchester Research Computing through eSNW
‘Grid Security’ = ‘Encouraging Grid users’
Working with RAL eScience team (also CERN, other universities, etc.)
.
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Tier 2 centre
2000 CPU Cluster (University funded) run by Particle Physics (GridPP and EGEE funded). Right architecture, right support, heavily used
Major contributor to EGEE
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eScience: more than just CPU cycles
Standard grid jobs – MC production, molecular modelling for biomedicine – relatively simple
More challenging:
ATLAS trigger simulation: need to reserve dedicated block and to ship large quantities of data
Grid farm for EM simulations – nodes build PVM
Data skimming forBaBar
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Working with STFC
• Strengths– Positive and professional staff
• Weaknesses– Slow decision processes. Over-management and
bean-counting
• Opportunities– New initiatives, new partnerships. Daresbury Campus
• Threats– SR outcome.
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Working at Manchester University
• Strengths– Healthy undergraduate and graduate recruitment– Top level commitment to world class research
• Weaknesses– Commitment not always consistent at lower levels
• Opportunities– Interactions with other groups
• Threats– RAE outcome
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Conclusions
• Universities and Research Councils benefit greatly by working together
• Especially Manchester and STFC
• Particle Physics already does so, and welcomes the prospect of expansion in this area