Accelerator Based Experiments status report

M. Lindgren

Fermilab Aspen PACJune 19-23, 2012

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Intro

• Energy Frontier• CDF • Dzero

• MiniBooNE• Minerva• Minos• SciBooNE• Seaquest• Test Beam

• Thanks for slides to:• Ray Culbertson, Dmitri Denisov, Chris Polly, Debbie Harris,

Rob Plunkett, Dave Christian, Aria Soha• Any mistakes are ones I introduced

Lindgren – Fermilab Aspen PAC, June 19-23, 2012

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Dzero - Collaboration452 Collaborators from 19 nations

Institutions: 84 total

• ~50% of the collaboration comprised of US groups

• ~140 students and postdocsSept 2011 Collaboration Photo

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• Averaged ~90% data taking efficiency – 10.7 fb-1 recorded in Run II • Detector functioned well up to the last day of Tevatron operation

Dzero - operations Summary

20112002

Dzero - Reconstruction and Computing• All Run II raw data processed by October 12 2012, ~10 billion events total• Access to data provided for at least ~5 years

5 Final raw data processing plot

Raw data

Processed Data

Dzero – Cosmic Data, Algorithms

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Cosmic data for tracker alignment and detectors studies Ran October-December 2011

Large data sets collected with different magnet configurations Valuable results obtained and used for data analysis

Collaboration efforts on improving algorithms ongoing B tagging Electron ID efficiency

New W Boson Mass Measurement

New W mass measurement on 5 fb-1 is published by DZero with error of 23 MeV

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PRL volume cover – Tevatron top and W boson mass measurements

Ultimate precision using full data set of ~12 MeV is expected

Higgs Searches

• Reaching 2 sigma sensitivity in all allowed mass range – as planned• Expect final Dzero results in 3-6 months

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Dzero - Publications

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• 19 papers submitted this year

• Distributed over all physics groups

• Expect ~50-70 more papers to be published on the full Tevatron data set

• Including CDF and DZero combinations

• 30 talks will be presented by DZero at ICHEP 2012

D0 Expected Results in 2012-2013• Higgs

Searches in all channels Over two sigma sensitivity in the full 115-185 GeV mass range Results of precision measurements of backgrounds, including W+jets(including b-jets), ttbar cross sections, di-

boson production

• Top quark Precision measurement of top quark mass with below 1 GeV precision Precision measurement of top/anti-top quarks mass difference Measurements of top quark production properties, including differential cross sections Measurements of top quark decay properties Measurements of s- and t-channels single top quark production

• Electroweak W boson mass measurement with ~12 MeV precision Production and decay properties of di-bosons: WW, WZ, ZZ, Wg, Zg Precision measurement of sin(qW)

• B physics Studies of di-muon production asymmetry and CP violation Measurements of b-baryons and b-mesons production, properties and lifetimes

• QCD Precision measurements of single, double and triple jets cross sections Extraction of aQCD and PDFs Double parton scattering and exotic states production

• New Phenomena Supersymmetry searches, including MSSM Higgs

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Fermilab Institutional Review, June 6-9, 201111

The CDF Collaboration

North America

30 institutions

Europe

21 institutions

Asia

8 institutions

The CDF Collaboration

15 Countries

59 institutions

538 authors

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CDF Operations Wrap up

Fermilab Institutional Review, June 6-9, 201112

• Final dataset:

12 fb-1 delivered 10 fb-1 collected

Efficiency : similar to previous years

• Low- √ s running in Sep 2011

√s = 300GeV 20M events

√s = 900GeV 85M events

• Sep 2011 annealing studies

will yield useful information

• Detector drained and secured

• CH is now ODH-0

• all online computers retired/migrated

• CDF display program in progress

• accommodating IARC, Nova construction

W mass

Fermilab Institutional Review, June 6-9, 201113

• 2.2fb for both electrons and muons

• significant improvement in tracker and calorimeter understanding

• leading systematics are statistics limited

• improvements in QED models important

• PDF now a leading systematic

• fits to MT,lepton PT, neutrino PT

• scales calibrated with J/,,Z• results

► MW = 80387 ±19

► more precise than the previous world avg

► World avg 80390 ±16 (previously ±23)

► World avg (with D0 2012) 80385 ±15

• Higgs constraint (with D0 2012)

MH = 94+29-24

MH < 152 GeV @ 95% CL

Standard Model Higgs

Fermilab Institutional Review, June 6-9, 201114

• Winter conference update

► all final states are full datasets

► data reprocessed 2011, 10% improvement

► first results with HOBIT, the multivariant tagger,

+20% in acceptance, +10% in sensitivity

► all but one major channels included HOBIT

► H→, 4l, 2, ttH included

► lepton ID: advanced selection, more triggers

► mass resolution: incorporating particle flow ideas, optimized energy corrections, event techniques

• Results

►combined 16 analyses with 93 channels

► Exclude SM Higgs at 95% C.L. : 147 < mH < 175 GeV/c2

► CDF only, highest p-value is 2.6 at 120GeV, 2.1 global

► CDF H→bb only, significance 2.9 loca at 136GeVl 2.7 global

► consistent with SM Higgs 107-142 GeV

CDF - Publications

Fermilab Institutional Review, June 6-9, 201115

• Ph.D. Theses

► 553 total,

6 in CY12

► 70 more

expected

• Publications

► 596 papers,

60 in CY11

► 24 submitted in CY12 so far

► 40+ expected in CY12

• >40 new results for Winter Conferences 2012

CDF – Future work

Fermilab Institutional Review, June 6-9, 201116

• Expect to continue to publish full dataset papers for rest of CY

► all generic data processing is final

► 10fb W mass processing has started

► pursuing charge asymmetry in bb, to complement tt

• combined six physics groups to four, to maintain eyes on analyses

• Higgs

► Final combination for ICHEP

Incorporate HOBIT multivariant tagger in last final state

► publish all channels and combination by end of summer (before LHC results)

• Data Preservation ► CDF committee formed, starting meetings

► expect 5 years of continued regular data access

► priority now is to preserve analysis expertise

► negotiating a copy of the data to CNAF (Bologna)

► planning for the long terfm – virtual farms

► Migrating to latest tape technology (T10KC) now

POT doubled with anti-ν beam11.3e20 POT(end of run)

5.7e20 POT(last

publication)

MiniBooNE update

POT delivered to MiniBooNE since last

oscillation publication exceeded 'best case'

projections...resulting in doubling of statistics with

anti-neutrino beam

18 Neutrino 2012, 6 Jun 2012

MiniBooNE Detector/reconstruction very stable...

NC π0 Sample

anti-νμ CCQE Sample

as evidenced in the overall rate of neutrino candidates per POT (right), and high statistics samples used as constraints for the oscillation search (below)

19 Neutrino 2012, 6 Jun 2012

Final results from MiniBooNEMiniBooNE observes an excess of νe candidates in the 200-1250 MeV energy range in neutrino mode (3.0σ) and in anti-neutrino mode (2.5σ). The combined excess is 240.3 ± 34.5 ± 52.6 events (3.8σ)

The event excess is concentrated in the 200-475 MeV region where NC π0 and other processes leading to a single γ dominate

Higher statistic anti-υ data is much more similar to the neutrino mode data

It is not yet known whether the MiniBooNE excesses are due to oscillations, some unrecognized NC γ bkg, or something else

6.5e20 POT neutrino mode 11.3e20 POT anti-neutrino mode

Contours below show allowed regions after a simultaneous fit

to neutrino and anti-neutrino data over the full energy

range. Best fit point preferred over null at 3.6σ.

MINOS

• Successful completion of 7 year low-energy beam phase.• Total beam received 1.6 x 1021 POT

Recent target progress seems robust.• A world leader in measurement of “atmospheric”

oscillation parameters. dm2 (best in world)

sin22q23 (possibly non-maximal)

2sin2q23sin22q13 with long baseline

• High productivity 48 papers 67 Ph.D. theses

Minos - Neutrino Velocity

Recent events led to interest in this quantity – MINOS is independent long baseline check.

Upgraded timing system built with collaboration with NIST and USNO

Currently have used to reduce systematics on data taken before upgrade. About 8.5 times more than earlier result (2007).

New system used to take data spring 2012. Error on this data will be small (2- 5 ns syst.)

Full spill approach event time within spill in ND predicts

FD distribution

Wrapped Spill approach Measure event time within batch Find batch gap time in each detector

Beam structure – 1.6 ms batches

Batch edge

-18 ± 11 (stat.) ± 29 (syst.) ns (early) -11 ± 11 (stat.) ± 29 (syst.) ns (early)

All results consistent with c and with each other!

MINOS Shutdown Plans

• Keep detectors on during shutdown to collect cosmics, maintain calibration minimize stresses and allow component tests.

• Upgrade computing Control room – plan is to be ready for XOC when it comes. Underground: mostly software

• Standard maintenance FIlters, test electronics spares, etc. Magnet power supply

• Near Detector DAQ upgrades (discussed in MINERvA)

MINOS+

Continued MINOS running in NOvA era

On-axis, medium energy beam gives large event rate

~4000 muon neutrino CC events per year expected at FD

~80 tau neutrino CC events

Difficult background but hope to accomplish discrimination

Sensitivity to a wide variety of non-standard interactions and model extensions.

MINOS+ Readiness

• Collaboration Strength: 80 50 Faculty (expect 5 from Indian Consortium) 19 Current and expected postdocs 20 Current and expected students (6 from Indian Consortium)

• FNAL effort to recycle CDF processors for Near Detector. Gives large spares pool of critical components for far detector. Removes largest hardware cost.

• Timing system upgrade essentially complete. Due to unusual world circumstances

• Issue: lab and agency support of key functions and individuals.

Examples are offline production, DAQ support, computing liaison. Good start in PPD Intensity Frontier support, AD liaison, needs

continuation Continued (and an additional) laboratory postdoc support needed.

MINERvA

•Significantly improve knowledge of neutrino-nucleus interactions between 0.5 and 20 GeV• Exclusive final state reconstruction and corresponding cross

sections → Support worldwide neutrino oscillation program → Probe nuclear effects on exclusive states

• With NOvA-era beam (“medium” energy) → Inclusive scattering measurements → Nuclear PDFs

• Multiple nuclear targets → C, Fe, Pb, He, water

• 89 Collaborators, 23 Institutions 29 PhD Students, 4 Masters Students

• First physics pubs soon• First: Anti-neutrino Quasi-Elastic Cross Section• Next: Neutrino QE cross sections, Nuclear Target cross section ratios, and total

inclusive charged current cross sections

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MINERvA – Detector

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Detector composed of 120 stacked modules of varying composition.

Finely segmented (~32 K readout channels), side ECAL & HCAL well instrumented

MINOS near detector acts as magnetic spectrometer

MINERvA - Low Energy Run

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Collected about half total exposure

in Low Energy Neutrino Mode

Final tally:

3.98E20 in Low Energy n1.74E20 in Low Energy anti-n

0.49E20 in Special Runs

Livetimes:

97.2% MINERvA,

93.3% MINOS Near Detector

(3/22/10 – end of run)

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MINERvA – NOvA Construction Prep

Cavern construction impact a concern

Low cost cover built and in place

Protects from falling debris and water

Smoke Detectors Cameras

Dust monitors installed. Top of detector (PMTs), MINERvA

DAQ rack, North end of MINOS Hall, MINOS DAQ computers

Respirable dust - dust particles < 2.5 microns

Vibration Monitors

MINERvA Shutdown Work

• Readout Speed MINERvA DAQ spec’d for 2 sec MI cycle time, before NOvA planned to change

MI cycle time to 1.3 seconds Parallelizing data concentrator with bypass of VME bus should get to 1.3 sec

with comfortable margin Idea tested on bench successfully. Moving forward on schedule

• MINOS DAQ Refurbishment: Reduce, reuse, recycle Readout processors (RIO3’s) old and expensive, expertise gone PVIC’s no longer available commercially

• Using Motorolas recovered from CDF/D0 can solve both these problems• Much local expertise, much hardware, move to GB Ethernet instead of PVIC’s

DAQ Computers underground are ~8 years old• Have identified 3-year old computers from CDF that meet the requirements

Work in progress• Would like to acquire additional spare photodectors

Replace MAPMT’s with SIPM’s on test beam module Funding, FTE’s are issue

• Have an FWP for Deuterium target engineering Fairly large effort – not clear there is funding or manpower available

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SciBooNE

SciBooNE

• Data Taking completed Aug 18, 2008 60 authors, 17 institutions

• 8 Ph.D.’s on this data• Detector Decommissioned

SciBar PMTs back to Japan, EC PMTs back to Italy All PREP equipment returned Scintillators now in Mexico as solar neutron detector Pb modules, Fe plates remain in detector hall

Decay region

50 mMiniBooNE

Detector

SciBooNEBooster Neutrino Beam

100 m 440 m

SciBooNE - Plans

• Next publications CC pi0 - late 2012 CC QE cross section - early 2013 ν/ν CC coherent pion production - early 2013 Neutral current elastic scattering

• Anticipate 3 more Ph.D.’s on this data

SeaQuest/E906

• Significant run was expected in 2011-2012, but beam was delayed by many months, primarily due to vacuum problems in the buried beam pipe that runs under the road near FCC.

• Beam tuning started in early March 2012 Proceeded quickly Detector commissioning done in parallel

• Spectrometer magnets energized 3/25/12 Broken cooling towers threatened operation Weather cooperated; magnet current had to be reduced only

once before shutdown• Uneven spill structure

High occupancy buckets caused problems for dimuon triggers Some DAQ mods in final weeks helped understand problem

and get some dimuon data for analysis

SeaQuest/E906 - Shutdown Plans

• Not enough data collected for Drell Yan physics• Data Analysis

Expect results on nuclear dependence of J/Psi production• Build two new (larger) wire chambers.• Develop new TDC microcode to allow higher trigger

rate.• Build high dynamic range beam intensity monitor

sensitive to individual rf buckets to provide splat block and measure beam delivered during spectrometer live time.

• Replace phototube bases in the highest rate parts of the detector.

Test Beam

• Detector R&D resource for many groups• Extensive facility infrastructure & instrumentation

Most components re-purposed from other experiments/beamlines

• In 2012: 11 experiments, 229 collaborators, 64 institutions, 14 countries

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• Flexible Beams• 120 Gev Protons• 2 - 66 GeV Pions• 0.5 – 32 GeV Electrons• Broadband Muons

FY 2008

FY 2009

FY 2010

FY 2011

FY 2012

ExperimentsCollaborators*

Institutions*Countries

Most Recent 5 Years

Experiments Collaborators* Institutions* Countries

Test Beam - Weekly Usage

• FY2012 only consisted of 7 months of beam• Facility use includes Beam studies, and educational support such as EDIT 2012.

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FY05 FY06 FY07 FY08 FY09 FY10 FY11 FY120%

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40%

50%

60%

70%

80%

90%

100%

0

4

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12

16

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32

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Exp Use 4 Data (%) Facility Use (%) Expt Data Taking Double Occupancy

We

ek

s

Test Beam – Shutdown work

• Minor Renovations to increase User ease New tracking system & read out Upgraded pixel telescope Expanded/Upgraded patch panel system Increase facility cooling capacity for SiPM’s

• Expecting MCenter addition support large & long potential experiments such as

• NOvA Calibration• Liquid Argon Detector Beam Test • MINERvA upgrade calibration test

Dedicated lower energy beamline (200 MeV – 32 Gev Pions)

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38 Lindgren – Fermilab Aspen PAC, June 19-23, 2012

Summary

The Accelerator based experiments ran well in collecting data up to the beginning of the long shutdown

Tevatron experiments Collected Data at average efficiency to end of running

Spares were low in many systems at end Publishing at a high rate, and will complete legacy

measurements Neutrino experiments collected large data samples

Nova cavern construction impact mitigated SeaQuest is in good shape to start physics program after the

shutdown Test Beam continues to operate well and be highly utilized

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