intensity frontier ( ka11 & ka13 & ka15 ) s. kettell bnl february 22, 2012 1 1)muon physics...

BNL Budget Briefing 2/22/12

Intensity Frontier (KA11 & KA13 & KA15)

S. KettellBNL

February 22, 2012

1

1) Muon Physics• Mu2e (from MECO)• g-2 (BNL FNAL)

2) Kaon Physics• ORKA (E949 ORKA)

3) Project-X• R&D (KOPIO+, ORKA+, ,)

4) Neutrino Physics• Daya Bay (KA13)• MINOS/MicroBooNE/LAr1• LBNE


BNL: national resource for Intensity Frontier

2

BNL is a national resource for Intensity Frontier: technology & scienceTwo key results: discovery of K+π+ and precision measurement of (g-2) with BSM hint Physics:• Current US Intensity Frontier and Project-X program is based on BNL experiments• Home of muon g-2 experiment hint of BSM physics• Leadership of RSVP (Kaons, Muons)• Leadership of E787/E949 (Kaons) discovery of K+π+• Leadership of LBNE and earlier neutrino experimentsTechnology:• Leader in the development of LAr detectors and electronics• Chemistry group is a “national resource” for liquid scint. and high purity materials• Leader in detector R&D, including large format PMT development• Extensive expertise in high intensity targetry and beamlines• Long experience with detectors for kaon, muon and neutrino experiments• Scientific management expertise, including large international collaborations


Our Plan (as of 2/22)

3

LBNE:• LBNE is key for motivating an onshore Intensity Frontier program• Continuing Leadership (Diwan as co-spokesperson, Bishai as Chief Scientist, Dolph

as Project Systems Engineer, Stewart in management)• Following the LAr technology decision, we plan to enhance BNL LAr effort,

including physics & performance, engineering and a focused LAr R&D program• Need to develop contingency plansKaons, Muons, neutrinos:• Need an intermediate-term physics program after Daya Bay:

• ORKA looks promising. We have a lot to contribute to this.• LAr1 physics experiment to follow-up our MicroBooNE effort

• Plan to continue MINOS/MINOS+ and MicroBooNE• Continue our important roles in g-2 and Mu2e• Continue to look for and push new opportunities

BNL Budget Briefing 2/22/12 4

Muons


FNAL: Search for -Ne-N with a Single Event Sensitivity below 10-16

P. Yamin, V. Polychronakos, Y. Semertzidis, new hire (50%)

BNL Roles:1. Study neutron response of Cosmic Ray Veto (CRV)2. Develop Cathode Strip Chamber (CSC) alternative for CRV3. Study improvements to stopping target geometry

Mu2e


BNL Mu2e effort

• The Mu2e CRV inefficiency must be less than 10-4 in the presence of a large thermal neutron flux. (MARS simulation on next page)

• Potentially large background from 2.2 MeV gammas from neutron capture on hydrogen.

CSCs are effectively insensitive to neutrons. (Potentially good spatial and timing resolution)

Scintillator vs. CSC comparison Test of scintillator prototype module in thermal

neutron environment. Spare ATLAS CSCs for evaluation at Fermilab

(if not chosen, use in cosmic ray test stand)


BNL-MARS simulation of Mu2e experiment

µ stopping target

3-layer CRV

Magnet yoke

CH2 absorber

w/CH2: 479 eventsw/5%B in CH2: 85 eventsw/30%B in CH2: 66 events

for 250K stopping μ

Hits in CRV1: Edep > 100keV

Optimization of stopping target geometry

Previous MC studies show promise in modifying the stopping target geometry to improve the electron energy resolution. Other geometries (e.g. Archimedes screw) will be investigated. We expect to finalize MC studies in FY13. The new staff member is critical for these MC (GEANT) studies.


FNAL Precision Measurement of the Anomalous Magnetic Moment of the Muon to

0.14ppm

W. Morse, Y. Semertzidis, new hire

(50%)BNL Physics Dept.

g-2

E821 (BNL g-2) Ring


E821 (BNL g-2 expt.)

• E821 has over 2K citations.– Amazing for a “small” experiment.

• Move ring to FNAL in FY13.• New muon beamline being designed by

Collaboration with the FNAL Muon Dept.• Systematic errors to be reduced by a factor of 4 to

match the improved statistics.


New Muon g-2 Experiment at FNAL

• Upgraded muon beamline• Ring from BNL• KEK inflector• Cornell kicker• BNL electric quad• Univ. DAQ/detectors.• Statistical error 0.1ppm

BNL LeadershipMajor BNL involvement

E821 Data


BNL Electrostatic Quad R&D • Refurbish the electric quadrupoles (ESQ) on Project.

– Upgrade the ESQ to be able to run at a higher field-focusing index in order to essentially eliminate the systematic error due to CBO.

– Test a full prototype and refit all the modules with the upgraded design.• Develop the CBO elimination scheme using RF at the CBO

frequency at injection and phase shifting at the end of the beam scraping period.

• Study the beam and spin dynamics related to CBO and its influence to the g-2 result

• Study the muon losses as a function of beam scraping schemes and optimize the muon storage.


BNL Leadership Roles

• W. Morse – Ring Disassembly Teamleader• Project funding (FY11=$19K, FY12=$200K, FY13=$2M)• Y. Semertzidis – Electrostatic Quad Upgrade Teamleader• Project funding (FY14=$0.5M)• Technical and engineering expertise for beamline and ring in CAD.• Beam/Spin Dynamics Systematic Errors: CBO, Lost muons,

Differential decay for Debuncher, E821 kicker, etc.• Runge-Kutta integration developed (accurate to sub-ppb for a)


g-2 notes from BNLBeam/Spin Dynamics & Systematic Errors

Note Title Date

246 Debuncher Systematic Errors 1/12

245 Weak Magnetic Focusing 1/12

184 Lost Muon and Differential Decay Systematic Errors 1/12

166 Wien Filter to Separate Protons from Muons 12/11

110 Interconnect Plan B 10/11

108 Second Generation Muon Beamline 10/11

107 Lost Muons 10/11

109 What n Value Should We Use at FNAL 10/11

54 Acceptable Material in the Magnet Gap 7/11

11 Moving the Ring 4/11

106 Muon Velocity 10/11

167 Differential Decay Systematic Error 1/12


Kaons


ORKA: Precision Measurement of Br(K+→π+νν )

K+→π+νν is one of a handful of special reactions with large NP reach and small SM uncertainty.

– NP found at the LHC: Precision flavor-physics experiments needed to sort out the flavor- and CP-violating couplings of the NP

– NP not found at the LHC: Precision flavor-physics experiments needed due to their sensitivity to higher mass scales via virtual effects.

ORKA

1050 Events@SM

Projected Theory uncertainty

ORKA is a 4th generation stopped-K+ experiment based on the success of BNL E787/E949 capable of reaching dBr/Br ~5%: comparable to the expected theoretical uncertainty.


BNL and ORKA

• Jaffe, Kettell, Littenberg, Worcester: Co-authors of Fermilab Proposal P1021 (Nov.28, 2011) – ORKA : Measurement of the K+→π+νν Decay at Fermilab– FNAL stage I approval granted Dec2011– Looking for CD-0 approval

• In-kind contributions from BNL/E949 of LESB-III kaon beam line elements, CsI endcaps, UTC.

• R&D on improved kaon-stopping target

• Simulation to validate anticipated acceptance improvements and reduce contingency

• Wisdom gained from extensive experience


ORKA- x100 sensitivity -

x10 from kaon flux, x10 from detector

(Aptenodytes forsteri)

http://2.bp.blogspot.com/-j1v5YMIE1dY/ThQv_YdxJcI/AAAAAAAAAPc/Jd3-AC_LiKI/s1600/killer+whale-4.jpg


ORKA Improvements

Incremental increases in signal acceptance based largely on E787/E949 measurements.

Additional acceptance gains expected from trigger improvements.

Uncertainties estimated from E787/E949 data

Beam E949 ORKA

Pp (GeV/c) 21.5 (AGS)

95 (MI)

Duty Factor (%) 41 44

PK (MeV/c) 710 600

Fraction of Kaons stop in target (%)

21 54

Average rate of stop Kaons/s (106)

0.69 4.78Acc. loss (%) 23 28

Events/yr. (SM) 1.3 210

Detector Component

http://2.bp.blogspot.com/-j1v5YMIE1dY/ThQv_YdxJcI/AAAAAAAAAPc/Jd3-AC_LiKI/s1600/killer+whale-4.jpg


Project-X


Project-X• Transfer of knowledge and experience: high intensity

beamlines, targets, magnets, dumps is being initiated with FNAL funds. Targetry R&D under discussion.

• Detector R&D ideas under discussion: calorimetry for kaon experiment, photon veto, kaon time-of-flight. Some discussion with FNAL on Project-X Generic Detector R&D FWPs. May be some synergy with ORKA detector development.

• Under Scenario-C, additional FTE could significantly advance this program.


Neutrinos


Daya Bay (KA13)

Beriguete, Bishai, Brown, Chasman, Diwan, Gill, Hackenburg, Hahn, Hans, Isvan, Jaffe, Kettell, Ling, Littenberg, Rosero, Tanaka, Themann, Wang, Whitehead, Worcester, Yeh, Zhang

24BNL Budget Briefing 2/22/12

BNL Daya Bay leadership

• Lead role in the Physics and CD1-4 Reviews– Editor of Physics Proposal, CDR & TDR

• Host Laboratory of US Project (with LBNL):– Chief Scientist, Chief Engineer, Safety Officer– Manage Muon, Installation, Integration, LS, Materials, Simulation & Analysis

• Led international simulation and liquid scintillator task forces• Leadership in Dry Run, Commissioning & Operations• Analysis Coordination Committee Chair• Lead in software and analysis• Host M&O Office

BNL Project Management • L2 Muon System (Littenberg, Hackenburg)• L2 Installation (Brown)• L2 Integration (Brown)• L3 Liquid Scintillator (Yeh)• L3 Materials compatibility (Yeh)• L3 Simulations & analysis (Jaffe)• Chief Scientist (Kettell)• Chief Engineer (Brown)• Safety Officer (Gill) Daya Bay NPP

Ling Ao NPP

Ling Ao-ll NPP

Total tunnel length: ~2700 m

730

m

570 m

910

m

Daya Bay Near (EH-1)360 m from Daya BayOverburden: 97 m

Ling Ao Near (EH-2)500 m from Ling AoOverburden: 98 m

Far site (EH-3)1600 m from Ling Ao2000 m from DayaOverburden: 350 m

Water hall

LS hall

Constructiontunnel

entrance

Large n flux17.4 GWth


Daya Bay InstallationEH-2(Ling Ao):10/11

EH-1(Daya Bay):7/11

EH-3 (Far):12/11


Key Operational Milestones

• AD#1–6 commissioning complete• Comparison of AD#1–2 (publication)• First oscillation result w/ ~0.025 sensitivity• Install AD#7–8• Possible manual calibration?• Precision oscillation study w/ 3 yr. data set• AD swap? Manual calibration?

Dec ’11……….

Mar ’12……….

Mar ’12………..

Summer/Fall ’12

2012 or 2013….

2013 – 2016…...

2015 – 2016…...

Date Milestone


Daya Bay scientific overview

• Tremendous progress in the past year• Completed assembly and filling of 6 ADs• Commissioned 3 EHs and began stable data-taking

– EH1(Daya Bay) 2 ADs 23 Sep 2011– EH2(Ling Ao) 1 AD 10 Nov 2011– EH3(Far) 3 ADs 24 Dec 2011

• Effort now focused on first oscillation analysis• Expect NIM paper on AD#1–2 this month• Expect first oscillation result in March


Physics Dept. Personnel

• Staff

– Mary Bishai, Chellis Chasman, Milind Diwan, Ron Gill, Robert Hackenburg, David Jaffe, Steve Kettell, Laurence Littenberg, Hidekazu Tanaka, Brett Viren

• Postdocs– Lisa Whitehead (until Aug 2011; Asst. Prof. U. Houston)– Zhe Wang (until Nov 2011; Assoc. Prof. Tsinghua U.)– Jiajie Ling– Chao Zhang (start July 2011)– Elizabeth Worcester (start Oct 2011)– Harry Themann (start Nov 2011)– Zeynep Isvan (start Jan 2012)


BNL leadership in commissioning and analysis

• H. Tanaka - Commissioning co-coordinator and Data Quality Working Group co-convener.

• D. Jaffe - Chair of Analysis Coordination Committee.

• S. Kettell - Chief Scientist


Recent(past year) and ongoing BNL analysis/offline contributions

• Inverse Beta Decay(IBD) analysis (Zhang, Ling)

• Spallation analysis– fast neutron background(Ling, Zhang)– 9Li/8He background(Zhang)– 12B identification (Zhang)

• Radioactive background analysis (Zhang)

• 13 fitting (Ling, Zhang)

• PMT flasher identification and rejection (Ling)

• PMT gain calibration and dark noise measurements (Wang)

• Offline Data Monitor web application (Zhang)

• Data Quality remote shifters (Worcester, Bishai, Isvan, Themann)

• Offline database commissioning (Viren)

• ‘Tagging’ software(Zhang, Ling, Viren)

• Event building proposal (Viren, Wang, Zhang, Jaffe)

• Fast muon simulation (Jaffe, Whitehead)

• Simulation of rock radioactivity (Viren)

• MC production (Jaffe)

• Realistic geometry for simulation/analysis (Jaffe)

• Use of muons to measure water atten. length(Ling, Wang, Jaffe)

• Blind analysis recommendations and policy (Jaffe)

30

Detected Antineutrino Rate after Efficiency Correction


BNL analysis plans• AD#1–2 comparison publication (Jaffe, Zhang, Ling)• Measure/limit 13 (Zhang, Ling, Isvan, Worcester)

• Muon system timing, tracking and performance (Viren, Hackenburg, Themann)

• Improve modeling of scintillation process (Worcester)AD1 AD2

AD#1–2 IBD candidates


MINOS

M. Bishai, M. Diwan, Z. Isvan, J. Ling, L. Whitehead


MINOS

• We have been heavily involved in several MINOS analyses: μ–bar oscillation, e appearance search, atmospheric e , beam systematics.

• We are collaborating with other local experts and utilizing unique BNL facilities, to provide critical understanding of MINOS beam data.

• We are a key resource for other NuMI neutrino experiments on beam simulations, data monitoring and logging.

• We continue to serve as analysis co-conveners and led several 2011 analyses

• Our expertise on MINOS analysis and beam simulation has been critical for LBNE beam designs and physics case.


MINOS

PRL 107:181802 (2011)


MINOS


MINOS+ LBNE

• NuMI is the model for the LBNE beam. We plan to continue studies of NuMI performance and beam systematics with the MINOS near detector for LBNE optimization.

• Continuing involvement in MINOS+ will allow us to further optimize LBNE designs and analysis:

• Using the medium and low energy beam near detector datasets to constrain the e beam contamination in the NuMI beam. This will help determine the level of contamination in the LBNE beam.

• The performance of LBNE can be enhanced by lowering the beam energy. A short run in MINOS+ with different main injector beam energies will inform the best energy to run LBNE/Project-X.


LBNE

Beriguete, Bishai, Brown, Butehorn, Cummings, Diwan, Dolph, Gill, Hackenburg, Hahn, Hans, Isvan, Jaffe, Kettell, Kirk, Ling, Littenberg, Marciano, Mareneris, Novakova, Ruga, Russo, Scheblein, Sexton, Sharma, Simos, Sinha, Stewart, Tanaka, Themann, Viren, Wang, Weng, Whitehead, Worcester, Yeh, Bichoneau, Burns, Chen, Duffin, Farrell, de Geronimo, Gordeev, Lanni, Li, Mahler, Makowiecki, Morse, Radeka, Rescia, Sondericker, Thorn, Wu, Yu


LBNE


BNL in LBNE

• Diwan is co-spokesperson• 52 BNL collaborators• Kettell is editor of the WCD CDR• Bishai & Whitehead are physics working group leaders• Jim Stewart is Water Cherenkov project manager• BNL hosts the Water Cherenkov Project office• R&D work on photo-multipliers, integration and

installation planning.• L3 Managers for Liquid Argon TPC and cold electronics:

Bo Yu, Craig Thorn (deputy for electronics up to DAQ)• Generic LAr R&D for TPC and electronics.

Measurement of fundamental LAr properties.


BNL History in LBNE

Sustained effort by BNL to develop plan to measure CP violation in neutrinos.

• BNL-69395 (2002), 71228 (2003), 73210(2004), Phys.Rev.D68:012002,2003.• Proposal in 2006: “Proposal for an Experimental Program in Neutrino Physics and

Proton Decay in the Homestake Laboratory”: BNL-76798-2006-IR, hep-ex/0608023• 2006-2007 - US long baseline study: coordinators: Diwan, Rameika; Paper trail is

long: http://nwg.phy.bnl.gov/fnal-bnl• 2007 - NUSAG report• 2008 - P5 report “The panel recommends a world-class neutrino program as a core

component of the US program, with the long-term vision of a large detector in the proposed DUSEL laboratory and a high-intensity neutrino source at Fermilab.”

• BNL group has had a critical role in all of the above.• Large part of the effort including some technical effort was supported by LDRD.

LDRD support for LAr development continues.


LBNE: accomplishments

• LBNE Collaboration development (Diwan)• Science requirements (Diwan, Bishai)• WCD design development (Stewart, Novakova, Dolph)• WCD requirements (Diwan, Dolph)• WCD CDR (Kettell)• WCD reconstruction software (Viren)• LBNE sensitivity (Whitehead)• PMT R&D (Ling, Tanaka, Diwan, Sharma, Dolph). NIM A670:61 2012• LArTPC & cold electronics development (Thorn, Yu)• Presentations on science & cost to Marx committee (Diwan, Stewart)


42

BNL LBNE Water Cherenkov Detector Project Management

Univ. of Wisconsin

& PSL

Duke

FNAL

RensselaerPolytechnic

Colorado

Penn

Drexel

Cal Tech

Boston

Davis

Irvine

BNL

Calibration:LANL, ISU, LSU, RPI, Hawaii

Computing:BNL, FNAL. Maryland

J Stewart Phys. L2 Manager

P Novakova PM Project Admin

J Dolph ME Chief Engineer

R Gill Phys. Safety

LBNE Project


LBNE Water Cherenkov Detector (WCD) achievements

• Water detector value engineering; new design saves $200M.• Conceptual design report available.• 12” high quantum efficiency – high pressure Hamamatsu PMTs now a

commercial product.• ETL nearing completion of a 11” HQE PMT made in America – Glass design

done expect delivery in Spring.• PMT mounting scheme prototyped.• PMT failure and shock wave analysis • PMT failure shock wave measurements available – NAVSEA • Independent design of large cavern liner performed. • Over a hundred materials under test for compatibility with ultrapure water.

– Materials have been identified for every sub-system. This catalog when complete is effectively a how-to manual for water Cherenkov detectors

• Many more (and several publications)


Transitioning WCD personnel and responsibilities to liquid Argon

• BNL has major responsibilities in the liquid argon detector. • Investigating optimal path to expand BNL role in LAr

– Conceptual design review recognized a need to expand the TPC effort - Recommendation:

– “Add more mechanical engineering to the TPC system.”– Management will be enhanced

• Present plan is to finish WCD tasks within ~4 months and develop a proposal for expanded BNL LAr effort– Funds are available to WCD groups for a ~4 month transition period.


e g (e+e-)

MC

first 24 mm of track

Bubble Chamber (1964)

Advantages of a LAr TPC High spatial and energy resolution Particle identification (e/γ/πo) by dE/dx

measurements (e/g separation >90%) Detailed 3D event reconstruction –

1Tera-voxel for 20 kT detector High detection efficiency and excellent

background rejection Scalable to multi-kiloton size

Why LAr TPC?


•LAr Generic Detector R&D – Building on 40 yrs of LAr at BNLCold electronics development, TPC construction, scalable designs, LAr

properties measurements, device prototyping

•MicroBooNE ExperimentResolve MiniBooNE low-e excess, precision neutrino cross section

measurements of E, QE, 1π, NCπ0, …, step towards LBNE

•LAr1 Proposal & LBNE Prototypes development of giant LAr technologies (scalable designs), “Far” detector for MicroBooNE, Short baseline oscillations, Sterile neutrinos,…,

•LBNE LAr40 TPCMass hierarchy, 13 mixing, CP violation in lepton sector, Proton decay

(baryon non-conservation), Supernovae, …

Scale/Timeof Effort

LAr TPC Evolution


Current LAr TPC Effort at BNLCryogenics, TPC, Cold Electronics LAr Detector R&D, MicroBooNE, LAr1, LBNE LAr40

Instrumentation Division:Veljko Radeka Division HeadGianluigi DeGeronimo ASIC design &Shaorui Li developmentNeena NambiarEmerson VernonJack FriedSergio ResciaDon MakowieckiBo Yu TPC DesignGeorge Mahler (CAD)

Physics Department:Hucheng Chen ElectronicsSue Duffin Cryostats &Jack Sondericker cryogenicsAnatoli GordeevK-C Wu (AM)Jason FarrellAndres RugaFrancesco Lanni LAr R&DYiChen LiCraig Thorn

Craig Thorn is Deputy Project Manager for Active Detector

Sue Duffin is L2 manager for Cryostat($1.4M, 9%)

Bo Yu is co-convener of Active Detector TPC subsystem, in charge of TPC design ($3.6M, 22%) (L2 is at Yale)

Hucheng Chen is L2 manager for Readout & DAQ ($1.8M, 11%)

K.C. Wu is L2 Manager for Detector Design and Construction Integration ($0.25M, 2%)

BNL (44%)

Bo Yu is manager for TPC & In-Vessel Electronics($20M TEC, 10%)

Craig Thorn is L3 deputy manager for In-Vessel Electronics($10M TEC, 5%)

63%

15%

BNL

11%

19%

9%22%11%

2%18%

7%MicroBooNE

LAr1 & LBNE LAr40

LBNE LAr TPC effort will expand


MicroBooNE

MicroBooNE Personnel: H. Chen, S. Duffin, J. Farrell, F. Lanni, D. Lissauer, G. Mahler, D. Makowiecki, J. Mead, V. Radeka, S. Rescia, J. Sondericker, C. Thorn, B. Yu, Y. Li


MicroBooNE

Cryostat installed in enclosure with equipment for cool down,filling and purification.

Readout racksand DAQ

Cryostat containing a TPC and array of PMTs, electronics, cables.

BNL MicroBooNE Responsibilities


Stacked modular detector units for large cryostats: location of electronics and feed-throughs decoupled.

BNL Technologies Key to Building Large Scale LArTPCEnabling concepts from BNL are Cold Electronics and Modular TPC Arrays

These permit LAr TPC scaling to arbitrary size with decoupling of electrical and mechanical designs

Cryogenic electronics in the cryostat close to the wire electrodes yields the best SNR

Highly multiplexed circuits with fewer digital output lines not only greatly reduce the “cable plant” and number of cryostat penetrations, but also give the designers of both the TPC and the cryostat the freedom to choose optimal configurations

A typical readout configuration with warm electronics, as in ICARUS: many long cables connect the sense wires to the FEE, resulting in large electronics noise and LAr contamination. To reduce the cable length, one has to implement cold feed-throughs below the liquid level, which increases the cryostat complexity and risk.

Old New


Goals• Engineering R&D on project

• prototype to validate the membrane cryostat design

• Full size APA, CPA (2.5m x 7m)• Minimum of 3 APAs, 6 CPAs• Cold electronics and DAQ

• Physics Experiment• Builds on ArgoNeut & MicroBooNE

in integrated LAr Plan• BNL and collaborators working on a

LOI as a backup plan.• Short-baseline oscillations to

explore anomalies or hints of sterile

11.5m

11.5m

16m

LAr1: a 1 kTon LArTPC


Membrane Cryostat

TPC Arrays

High Bay Access

Truss Lid for CryostatIsolated Personnel

Access

LAr40 TPC2x20 kilotons o LAr40 has 33 kton fiducial

mass to match the sensitivity of “two 100-kt (fiducial) Water Cherenkov Module equivalents”

o Current plans site at 4850L of Sanford Lab

o Membrane cryostat technology

LBNE LAr40 TPC and Cryostats


Field Cage Bars

APA = Anode Plane Assembly

CPA = Cathode Plane Assembly

APA CPARepeatRepeat

Unit CellTPM = TPC Module = 1 APA

+ 1 CPA(+1 “terminal” CPA)108 TPM per LAr20

Active Mass:180 ton LAr

~ 0.5 x ICARUS~2 x MicroBooNE

7.5 m

2.5 m

7.5 m

BNL Responsibilities

APA & CPA Assemblies for TPC modules


Qmax=300fC

Front End ASIC •charge amplifier, high-order filter• adjustable gain: 4.7, 7.8, 14, 25 mV/fC• adjustable filter time constant (peaking time 0.5, 1, 2, 3 µs)• selectable collection/non-collection mode• selectable dc/ac coupling (100µs) •ASIC revision 2 fabricated under evaluation

LAr TPC - Cold CMOS Electronics


LAr Program at BNL — The Future

Design & construction of LAr TPCs: MicroBooNE, LAr1 and LBNE LAr40

MicroBooNE will offer a first opportunity to extract physics with these devices as well as understand processes and backgrounds that are important for LBNE

LAr1 will verify scalable BNL designs and may offer opportunities for short baseline physics

1. We have hired a postdoc to work on LAr detector R&D and MicroBooNE physics analysis (Thank you!) Incorporating device physics into detector models, event analysis, physics extraction and full physics analysis

2. We plan to transition LBNE engineering, management and scientific effort from WCD to LAr.3. Evaluate an enhanced R&D program to support LBNE LAr effort.4. In scenario C we would like to hire an assistant physicist for simulation and data analysis

effort on LAr TPCs to optimize detector designs and extract physics.


LBNE: LAr R&D

56

1. Diffusion measurements. Measure fundamental properties of electron drift in LAr.2. Purity monitors. Purity monitors use injection of electron charge to measure the purity. This

electron injection could be performed in a variety of ways.3. LAr scintillation yield. The scintillation light is in deep UV and must be shifted. The light yield

from a large volume is currently unknown.4. Long drift tests. There are two 5 meter long drift instruments: one in Bern and another at

CERN. It is possible to either use these instruments or relocate them to the US.5. Fermilab liquid argon purity demonstrator. This device was constructed to demonstrate

purity without evacuation. It has been assembled and produced an initial result, but a lot needs to be done.

6. LAr TPC designed to measure low threshold capability. This device will need to have both a TPC and light readout. However it needs to be focused specifically to measure spallation backgrounds. It should be small enough that it can be located underground if needed, but large enough to get enough rate from spallation events.

7. LAr TPC in a charged particle test beam at Fermilab. This TPC should be large enough to contain electromagnetic showers.

8. 1 kTon prototype.


LBNE

• A positive indication of 13 makes LBNE scientifically very important

• BNL has been a lead institution in LBNE since the beginning• We have had a major impact on the conception and now

the development of the experiment• In the next few months we expect:

• A positive decision by OS to proceed with LBNE• Enhanced BNL effort on LAr• Successful director’s review in March• Successful subsequent CD-1 review


• Daya Bay is performing well and remains a top priority• We remain committed to LBNE: transitioning effort to LAr.• We look to enhance other intensity frontier initiatives

(such as ORKA or LAr1) and look for an intermediate physics program with data before LBNE

• Mu2e, MINOS/MINOS+ and MicroBooNE continue to progress with substantial BNL involvement

• Like to see CD-0 for g-2 and ORKA• Proposing larger detector R&D effort for Project-X. Natural

synergy with ORKA development.

Discussion Points


• In scenario A (5% cut) the intensity frontier will drop by 3.2 FTE and the following will be reduced: losing 1 scientist on KA11 (LAr/LBNE or Muon) and three postdocs (1.7 FTE) and a staff scientist on Daya Bay (0.4 FTE)

• In scenario B, with flat-flat funding, IF will drop by 2.2 FTE and the following will be reduced: losing 3/4 scientist on Muons or LAr and losing two postdocs (1 FTE) and half of a staff scientist (0.2 FTE) on Daya Bay

• In scenario C, IF increases by 3 FTEs and we develop a robust muon, kaon and neutrino effort.

Impacts of Scenario A,B,C


• Thank you for the scientist on g-2/Mu2e• Would like to add a postdoc

• Request one scientist for simulation, reconstruction & analysis of LAr.

• Request one scientist for kaon R&D and ORKA development

Requests


• Kaons: ORKA, ORKA@Project-X, KOPIO+• Muons: g-2, Mu2e• Neutrinos:

• Short baseline accelerator experiment (LAr1?)• Short baseline reactor experiment (SONGS?)• Long baseline reactor experiment (large value of 13)

makes a 20-60km experiment compelling and may provide an early mass hierarchy measurement)o DayaBay-2? Proposal under discussion.o Domestic version?

Additional Discussion Points


BNL: national resource for Intensity Frontier

62

BNL is a national resource for Intensity Frontier: technology & sciencePhysics:• The current US Intensity Frontier and Project-X program is based on BNL

experiments• Home of muon g-2 experiment hint of BSM physics• Leadership of RSVP (Kaons, Muons)• Leadership of E787/E949 (Kaons) discovery of K+π+• Leadership of LBNE and earlier neutrino experimentsTechnology:• Leader in the development of LAr detectors and electronics• Chemistry group is national resource for liquid scintillator and materials• Leader in detector R&D, including PMT development• Extensive expertise in high intensity targetry and beamlines• Long experience with detectors for kaon, muon and neutrino experiments• Project management expertise, including with international collaborations


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