BeamandLargeDetectorsforthe USLongBaselineNeutrinoExperiment - - PowerPoint PPT Presentation
BeamandLargeDetectorsforthe USLongBaselineNeutrinoExperiment JonUrheim IndianaUniversity 16December2010 Outline TheLBNEProject:
Beam and Detectors for LBNE – J. Urheim, Indiana University – NNN10
2 16 Dec. 2010
Beam and Detectors for LBNE – J. Urheim, Indiana University – NNN10
3 16 Dec. 2010
– It is the name of the “Project” being proposed to U.S. funding agencies. – Its impetus was provided by the very influenTal 2008 P5 report. – LBNE represents the “next generaTon” of osc’n experiments following T2K & NOvA accelerator + Double Chooz, Daya Bay, & Reno reactor expts
– A new intense wide‐band “low‐energy” neutrino beam line at FNAL. – A “Near Detector” facility located at the edge of the FNAL site – A “Far Detector” facility 1290 km away at DUSEL (Homestake mine in SD)
Beam and Detectors for LBNE – J. Urheim, Indiana University – NNN10
4 16 Dec. 2010
– By Fall 2008, considerable momentum already established. – Science CollaboraTon forming then
– Water Cherenkov proponents awarded NSF “S4” funds for engineering support – Liquid Argon efforts grown out of Fermilab R&D acTviTes, incl. MicroBooNE – AcTviTes formalized/accelerated w/ formaTon of “LBNE” Project in 2009
– DOE grants “CriTcal Decision 0” in January 2010 authorizaTon to develop conceptual design for 2 x 100‐kt Water Cherenkov Module Equivalents
– Current Drao well over 1,000 pages. CD‐1 review planned in 2011.
Beam and Detectors for LBNE – J. Urheim, Indiana University – NNN10
5 16 Dec. 2010
Beam and Detectors for LBNE – J. Urheim, Indiana University – NNN10 16 Dec. 2010 6
Beam and Detectors for LBNE – J. Urheim, Indiana University – NNN10 16 Dec. 2010 7
Slide courtesy G. Rameika
Beam and Detectors for LBNE – J. Urheim, Indiana University – NNN10
8 16 Dec. 2010
Beam Parameter Value Protons per cycle 4.9 x 1013 Cycle Tme (120 GeV) 1.33 sec Pulse duraTon 1.0 x 10‐5 sec Proton beam energy 60 to 120 GeV Beam power at 120 GeV 708 kW OperaTonal efficiency 63% Protons at target per year 7.3 x 1020 Beam size at focus 1.5 mm Beam divergence x,y 0.017 mrad
Beam and Detectors for LBNE – J. Urheim, Indiana University – NNN10 9 16 Dec. 2010
varied beam condiTons (beyond 500 π Main Injector dynamic aperture)
Beam and Detectors for LBNE – J. Urheim, Indiana University – NNN10
10 16 Dec. 2010
Beam and Detectors for LBNE – J. Urheim, Indiana University – NNN10
Recent repair to Horn 1 made difficult due to high radiation levels: 75 r/hr ( 0.75 Sv/hr) on contact 35 r/hr ( 0.35 Sv/hr) at 1 foot Repair worker gets weekly dose limit in a few seconds! 2 minute repair job distributed over crew of 10, total 371 mr.
Beam and Detectors for LBNE – J. Urheim, Indiana University – NNN10
12 16 Dec. 2010
Beam and Detectors for LBNE – J. Urheim, Indiana University – NNN10
13 16 Dec. 2010
Target
– Nominally Graphite core – Design for 700 kW target proceding at IHEP Protvino, upgradable to 2.3 kW – Fully inserted into Horn 1, but can be removed w/ remote handling
Horns
– Horn 1 u/s: cylindrical – Horn 1 d/s: parabolic – Horn 2: parabolic – Polarity under external control
Beam and Detectors for LBNE – J. Urheim, Indiana University – NNN10
14 16 Dec. 2010
Beam and Detectors for LBNE – J. Urheim, Indiana University – NNN10
15 16 Dec. 2010
Beam and Detectors for LBNE – J. Urheim, Indiana University – NNN10
16 16 Dec. 2010
Beam and Detectors for LBNE – J. Urheim, Indiana University – NNN10
17 16 Dec. 2010
Support rooms for water treatment, MEP, control & clean rooms Sumps Mucking egress and operaTonal sump access drio and secondary egress @ 5060L Secondary egress from LC1
Beam and Detectors for LBNE – J. Urheim, Indiana University – NNN10
18 16 Dec. 2010
– Water containment/cavern interface – MagneTc compensaTon coils – PMT InstallaTon Units – Water recirculaTon manifolds – Deck & electronics / PMT interface
Beam and Detectors for LBNE – J. Urheim, Indiana University – NNN10
19 16 Dec. 2010
Vessel liner material:
– Polymeric sheet liner is a preferred opTon – 3mm stainless steel (304) is in baseline for now, as polymeric materials are under study
Beam and Detectors for LBNE – J. Urheim, Indiana University – NNN10
20 16 Dec. 2010
– Aim for 20% coverage, w/ Quantum Efficiency > 20% – Wavelength range 300 to 600 nm – Gain 107 @ < 2 kV, charge resoluTon 50% – Aoerpulsing < 5%, pre‐pulsing < 1%, dark rate 2500 Hz @ 13C – Long‐term stability; Pressure resistance up to 700 kPa
Beam and Detectors for LBNE – J. Urheim, Indiana University – NNN10
21 16 Dec. 2010
Housing Base EncapsulaTon Sleeve or Cup Base Electronics Cable Assembly
– 6 PMT’s/PA’s per PIU – Note ‘cable trays’, light barrier – Note 100m cable spools (spools removed aoer install)
Beam and Detectors for LBNE – J. Urheim, Indiana University – NNN10
22 16 Dec. 2010
Beam and Detectors for LBNE – J. Urheim, Indiana University – NNN10
ImplementaTon:
vessel
compensaTon
Goal:
Less than 50 mG on at least 75% of all PMT posiTons Less than 100 mG on at least 95% Less than 150 mG everywhere
16 Dec. 2010 23
Beam and Detectors for LBNE – J. Urheim, Indiana University – NNN10
24 16 Dec. 2010
Beam and Detectors for LBNE – J. Urheim, Indiana University – NNN10
25 16 Dec. 2010
Beam and Detectors for LBNE – J. Urheim, Indiana University – NNN10
26 16 Dec. 2010
Ross Shaft Ramp From 300L to 800L Existing 800 Level Yates Shaft LArTPC Cavern 1 Existing 300 Level Kirk Portal LArTPC Cavern 2 Utility Shafts To Surface
Beam and Detectors for LBNE – J. Urheim, Indiana University – NNN10
27 16 Dec. 2010
Beam and Detectors for LBNE – J. Urheim, Indiana University – NNN10
28 16 Dec. 2010
1) 16m x 15m x 74m of LAr in vessel: 25 kt (total), 17 kt (fiducial) 2) 2.47 m maximum drio: 123 kV on cathodes 1.6 mm/µs max drio Tme 1.6 ms 3) Aim for < 0.2 ppb O2 contaminaTon: ensures e lifeTme > 1.4 ms 4) 3 R/O planes: verTcal (coll.), +/‐ 45o (ind.) wire pitch 3.0 mm (Y) / 3.3 mm (U,V) 5) Segmented as “Anode Plane Assemblies”: 3840 readout wires per APA x 3 x 2 x 28 = 645k channels, sampled @ 2 Msps
Beam and Detectors for LBNE – J. Urheim, Indiana University – NNN10
29 16 Dec. 2010
Person scale
Source: GTT & Russ Rucinski
Membrane Cryostat for LNG ship tanker. This tank is 35 m high x ~45 m wide, 40,000 m3. LAr20 will be 15 m high x 16 m wide x 74 m long = 19,000 m3.
Beam and Detectors for LBNE – J. Urheim, Indiana University – NNN10
30 16 Dec. 2010
Source: ARUP
Beam and Detectors for LBNE – J. Urheim, Indiana University – NNN10
31
70m 14m 2.5m
168 APAs 224 CPAs Total weight: ~70 tons
Source: Bo Yu 16 Dec. 2010
Beam and Detectors for LBNE – J. Urheim, Indiana University – NNN10
7mx2.5m, stainless steel construcTon, 250kg 4 planes of wires @ 3mm pitch 3840 sense wires, 5520 wires total Electronics on one end of the frame
Source: Bo Yu 16 Dec. 2010 32
Beam and Detectors for LBNE – J. Urheim, Indiana University – NNN10
33 16 Dec. 2010
Ga Tech on “hot carrier” effects
Beam and Detectors for LBNE – J. Urheim, Indiana University – NNN10
34 16 Dec. 2010
Beam and Detectors for LBNE – J. Urheim, Indiana University – NNN10
– Heat loss into cryostat freezing of rock will install heaTng elements – Nominally no evacuaTon of interior volume to eliminate contaminants (though not impossible). LAPD (see M. Soderberg talk) will test purity quesTons.
– LAr20 is self‐shielding, and CR muon rate into detector is low (~100 Hz), but… – Adding CR veto system in surrounding rock would protect against neutrals, produced in CR muon interacTons, entering and mimicking, e.g., p K ν – Adding scinTllaTon/cherenkov photon detecTon capability would enhance
– 800 ton prototype planned for construcTon at FNAL
35 16 Dec. 2010
Beam and Detectors for LBNE – J. Urheim, Indiana University – NNN10
36 16 Dec. 2010
70‐ton LArTPC (MicroBooNE‐like) MagneTzed straw‐tube tracker, and calorimeter/muon range stack
Beam and Detectors for LBNE – J. Urheim, Indiana University – NNN10
– Much engineering effort invested already – These systems appear technically feasible
– See, e.g., previous talks by L. Whitehead and B. Rebel – The case grows stronger in proporTon to detector mass and beam power
37 16 Dec. 2010
Beam and Detectors for LBNE – J. Urheim, Indiana University – NNN10
38 16 Dec. 2010
Beam and Detectors for LBNE – J. Urheim, Indiana University – NNN10
39 16 Dec. 2010
Beam and Detectors for LBNE – J. Urheim, Indiana University – NNN10
16 Dec. 2010 40
Beam and Detectors for LBNE – J. Urheim, Indiana University – NNN10
Source: ARUP
16 Dec. 2010 41
Beam and Detectors for LBNE – J. Urheim, Indiana University – NNN10
Parameter Value Total Volume 18,500 m3 LAr Total Mass 25 kton Inner/Outer Height of Tank 16 m/19 m Inner/Outer Width of Tank 16 m/19 m Inner/Outer Length of Tank 74 m/77 m Inner Liner Thin membrane stainless steel InsulaTon Reinforced Polyurethane; Inner layer 30 cm,
Secondary Containment 0.07 mm thick aluminum between fiberglass cloth. Overall thickness is 0.8 mm located between insulaTon layers Outer Concrete Layer 0.5 m thick, inner surface treated with vapor barrier
16 Dec. 2010 42
Beam and Detectors for LBNE – J. Urheim, Indiana University – NNN10
Parameter Value LAr Temperature 89 K Depth of the Liquid (Liquid Head) 15.0 m Design OperaTng Pressure (Above Liquid) 0.113 MPa Design OperaTng Pressure (Bo|om of Liquid) 0.316 MPa Rated Pressure Capacity of Tank 0.52 MPa (calculated according to BS EN 14620)
16 Dec. 2010 43
Beam and Detectors for LBNE – J. Urheim, Indiana University – NNN10
16 Dec. 2010 44
Beam and Detectors for LBNE – J. Urheim, Indiana University – NNN10
16 Dec. 2010 45
Beam and Detectors for LBNE – J. Urheim, Indiana University – NNN10
Channels: up to 700,000 Chips: ~ 65,000 (assume > 90% yield, > 15% spares) Technology: CMOS 0.18µm (a main stream, available Tll 2020) mask cost $ 210k, wafer cost $2.2k; packaging cost $ 1.75 each FabricaTon cost esTmate: chips per wafer: ~ 330 (6/ret.) number of wafers: ~ 200 Total cost: 210k$ + 2.2k$×200 + $1.75×65k ≈ 760 k$ Cost per channel: ≈ 0.7 $
14 x 20 package (cavity 11x13)
requirement challenge status Low‐noise front‐end
ENC < 1000e‐ at 200pF ~ 5mW, 300fC range moderate‐high ASIC fabricated, being tested
ADC
12‐bit, 2MS/s, ~ 4mW moderate‐high design in progress
Design
reliable models at 90K low structures fabricated, being tested
Life<me
> 20 year operaTon at 90K low structures to be fabricated
16 Dec. 2010 46
Beam and Detectors for LBNE – J. Urheim, Indiana University – NNN10
47
Rates/data sizes of dominaTng processes – All numbers are per APA – Zero‐suppression assumed, unless noted otherwise – “Instantaneous data rates” are for 1.6ms Tmeframe – “Avg data rates” factors in rate for ‘rare’ processes
16 Dec. 2010
1 APA (out of 168) = 2.5m x 7m x (2 x 2.47m drio) = 119 tons LAr = 3840 wires x 3088 sample (@2 Msps)
Beam and Detectors for LBNE – J. Urheim, Indiana University – NNN10
48 16 Dec. 2010
Total: 168 APA’s
1 APA = 2.5m x 7m x (2 x 2.47m drio) = 119 tons LAr = 3840 wires x 3088 samples (@ 2 Msps)