LAr20 Goals & Plans Integrated R&D Plan Development
Bruce Baller November 23, 2009
Slide 2
Outline LAr20 TPC basics Participants LAr20 reference design
parameters Detector concepts & short term plans R&D Plan
Development The historical plan Risk analysis Additions to the
historical plan 2 Director's Review of LAr Integrated Plan, Nov 23,
2009
Slide 3
3
Slide 4
Active LAr20 Institutions BNL Cryogenics, TPC, cold electronics
Indiana Cryostat, cryogenics FNAL Cryostat, cryogenics, cavern
& infrastructure, installation planning, warm electronics,
physics R&D Michigan State Cold electronics Minnesota
Installation planning Tufts Physics R&D UCLA TPC, HV
feedthrough Yale TPC, Physics R&D 4 Director's Review of LAr
Integrated Plan, Nov 23, 2009 ~30 active participants
Slide 5
LAr20 Conceptual Design Options Membrane cryostat is attractive
if evacuation is not required Effective use of the excavated cavern
volume Design used in LNG tankers of volume ~10x LAr20 Over 200
tankers in service since 1970 ~CD2 level costing information
received from mfg 5 Director's Review of LAr Integrated Plan, Nov
23, 2009
Slide 6
6 1m of foam glass instead of foam panels
Slide 7
Alternatives for CD1 Modular Soup Can Cryostat configuration
Modular cryostat is our backup if evacuation IS required Less
effective use of excavated volume than membrane Soup Can
configuration Not considered for CD1 Standard tank construction for
above-ground application Non-standard cavern excavation 7
Director's Review of LAr Integrated Plan, Nov 23, 2009
Slide 8
Cryostat Options Costing Director's Review of LAr Integrated
Plan, Nov 23, 2009 8 Excavation & outfitting cost ~$800/m 3 LAr
cost ~$1k/kton Membrane cryostat cost ~$2k/m 2 TPC, electronics,
etc cost not included
Slide 9
Membrane Cryostat Cross Section 9 Director's Review of LAr
Integrated Plan, Nov 23, 2009
Slide 10
Cryostat Kit Components Director's Review of LAr Integrated
Plan, Nov 23, 2009 10
Slide 11
Labor Estimates Director's Review of LAr Integrated Plan, Nov
23, 2009 11
Slide 12
Tools for Installation Director's Review of LAr Integrated
Plan, Nov 23, 2009 12 Automatic welding machine Resin mixing
machine Gluing machines
Slide 13
Proposal Cost Estimate Director's Review of LAr Integrated
Plan, Nov 23, 2009 13 Proposal cost estimate is proprietary Cost
~$2k/m 2 w 30% UG labor premium, FNAL technicians
Slide 14
GEOSTOCK Pilot Plant South Korea 14 Director's Review of LAr
Integrated Plan, Nov 23, 2009 Underground Storage of LNG in Mined
Rock Cavern, Nicolas Gatelier, IGRC, Paris 2008 Membrane cryostat
Constructed & operated in 2003 2005 Proposing a 200 kton LNG
storage plant
Slide 15
LAr20 Reference Design #1 Fiducial mass = 1/6 of 100kt Water
Cherenkov 16.7kt (LAr20) Size ~20m x ~20m x ~40m Drift distance
2.5m 2 or 3 wire planes, wire spacing = 3 - 5 mm Cost-benefit
decision ( e ID efficiency, NC o rejection) ~500k channels for 2
wire planes with 5mm spacing Director's Review of LAr Integrated
Plan, Nov 23, 2009 15
Slide 16
Reference Design #1 TPC Concept Director's Review of LAr
Integrated Plan, Nov 23, 2009 16 2.5m Cathode Plane Wire Planes
Start with the design and cost estimate of the MicroBooNE TPC
module (~10m long). Increase the width of the wire planes to 4m Add
mirror module 4m 11m Pre-assembled wire planes 4m x 10m x ?cm
Shipping box fits in Yates supercage
Slide 17
Depth Options for CD1 300 level oscillation physics, pdk?, SN
s? Drive in access 4850 level - oscillation physics, pdk, SN s
Shaft access Director's Review of LAr Integrated Plan, Nov 23, 2009
17
Slide 18
Cavern Cost Study The LAr20 cavern concept has a 20m deep pit
Not the standard DUSEL lab module DUSEL has dropped development of
the 300 level We are conducting a cost study to address these
uncertainties Managed by Chris Laughton (FNAL mining engineer &
LAr20 system manager) Request for Proposal issued in October to
mine engineering consultants Currently reviewing 4 proposals
Director's Review of LAr Integrated Plan, Nov 23, 2009 18
Slide 19
Cryo Engineering Consultants Contract with Arup for Conceptual
design of membrane cryostat Conceptual design of modular cryostat
Conceptual design of cryogenics plant Arup capabilities (w Linde
sub-contract) Conceptual design of >20 LNG cryogenic &
cavern storage facilities He and H2 liquefier systems Under
contract with DUSEL 19 Director's Review of LAr Integrated Plan,
Nov 23, 2009
Slide 20
Cryo Plant Concepts LN2 cooling system Surface or UG Re-liquefy
N2 LN2 tracer in cryostat(?) Heat load 20kw cryostat + 20kw
electronics ~400kw power consumption Director's Review of LAr
Integrated Plan, Nov 23, 2009 20 Note: This layout inaccurate to
meet purity requirements
Slide 21
Cold (87K) Electronics Concept Director's Review of LAr
Integrated Plan, Nov 23, 2009 21 Cosmic Ray Test Stand CMOS tests
Edwards (Michigan State) CMOS ASIC Development & testing
Radeka, Rescia (BNL) Yarema (FNAL) Cressler (Georgia Tech)
Integration, grounding Marvin Johnson (FNAL)
Slide 22
LAr20 Readout Scheme Director's Review of LAr Integrated Plan,
Nov 23, 2009 22 Event Filter Raw Data Rate: ~200 GB/s (384 Mbps X
5.5k) Event Filter will receive optical signals, de-multiplex,
decompress and find useful events, then send to Event Builder/DAQ
Farm Data Rate to Event Builder: ~200 MB/s (200GB/s X 10 X 0.0001)
H. Chen - BNL
Slide 23
LAr20 Short Term Plan The first cost estimate for the LAr20
Reference Design #1 should be available in Feb Arup conceptual
designs of the cryostat options & cryogenics plant complete
LAr20 team goal: Complete the cost estimate for the Reference
Design #1 Cavern cost study completed(?) FNAL does first pass
estimate of ODH mitigation Calculation of the fiducial volume for
Reference Design #1 can feasibly be available in Feb We will have a
CD-1 level estimate of cost per kton of fiducial volume Director's
Review of LAr Integrated Plan, Nov 23, 2009 23
Slide 24
R&D Plan Development Historical (ca 2005) plan Test stands
& experiments (next 2 slides) Development of the proposed plan
Methodology Risk identification risks that are not being addressed
by the historical plan Risk classification level of importance Risk
mitigation Propose new R&D activities /experiments Analysis
done by the Integrated Plan development group over an intense 3
month period This Directors Review is the first external airing of
the plan Director's Review of LAr Integrated Plan, Nov 23, 2009
24
Slide 25
Director's Review of LAr Integrated Plan, Nov 23, 2009 25 The
Historical Plan
Slide 26
Director's Review of LAr Integrated Plan, Nov 23, 2009 26 The
Historical Plan
Slide 27
Integrated Plan Development Group Flavio Cavanna (LAquila)
Ornella Palamara (Gran Sasso) Bruce Baller (FNAL) Bonnie Fleming
(Yale) Cat James (FNAL) Rob Plunkett (FNAL) Stephen Pordes (FNAL)
Gina Rameika (FNAL) Brian Rebel (FNAL) Jon Urheim (Indiana)
Director's Review of LAr Integrated Plan, Nov 23, 2009 27 Un
ringraziamento speciale
Slide 28
Risk Identification Assume that all R&D activities in the
Historical Plan are successful ArgoNeuT is taking data, ~10k
neutrino interactions, will publish QE cross sections Analysis code
developed for 3D reconstruction of tracks and showers LAPD
demonstrates long electron lifetime without first evacuating the
cryostat MicroBooNE publishes results from 100k sample of neutrino
interactions, demonstrates long electron lifetime without first
evacuating the cryostat What risks remain that might prevent
successful operation of LAr20? Director's Review of LAr Integrated
Plan, Nov 23, 2009 28
Slide 29
Risk Classification Director's Review of LAr Integrated Plan,
Nov 23, 2009 29
Slide 30
Director's Review of LAr Integrated Plan, Nov 23, 2009 30
Mitigation Notes
Slide 31
Director's Review of LAr Integrated Plan, Nov 23, 2009 31
Mitigation Notes
Slide 32
Director's Review of LAr Integrated Plan, Nov 23, 2009 32
Calibration test Cryostat prototype Installation/Integration
prototype Electronics stress test HV feedthrough prototype Review
of FNAL cryo safety std Proposed new R&D Activities
Slide 33
Final Comments The proposed set Reduces risks to an acceptable
level Is cost effective Takes into consideration our understanding
of schedule and resource constraints Subsequent talks will detail
the risks in each category and the mitigation plan Director's
Review of LAr Integrated Plan, Nov 23, 2009 33
