EDMEDM C&S Review 2/11/05 #1 Martin Cooper, Los Alamos Co-spokesperson for the EDM Project for presentation to LANL Cost and Schedule Review Committee.

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Presentation transcript:

EDMEDM C&S Review 2/11/05 #1 Martin Cooper, Los Alamos Co-spokesperson for the EDM Project for presentation to LANL Cost and Schedule Review Committee for the EDM Project Los Alamos, NM February 11, 2005 EDM Research and Development

EDMEDM C&S Review 2/11/05 #2 SNS Risk Analysis QuantitySymbolDesignDegradedEDM Loss EDM Limit [95% CL] Wall Loss Time ww >2,000 s500 s1.8 Particle ID30:12:14 Background / Signal2:15: He Relaxation Time 33 30,000 s3,000 s1.9 3 He Initial PolarizationP3P3 99%90%1.2 SQUID Noise 1  0 10  Trapped Fields  B/B x Electric FieldE50 kV/cm25 kV/cm2 Quadrature6.520 x e*cm Murphy's Law (4 worst) x e*cm

EDMEDM C&S Review 2/11/05 #3 Equipment Funding for R&D LANL LDRD - Mostly salaries $150k $600k CE for DR $400k $600k DOER&D $600k proposal submitted$1350k

EDMEDM C&S Review 2/11/05 #4 Electric Field

EDMEDM C&S Review 2/11/05 #5 High Voltage (LANL) Capacitive Multiplier HV Test Stand

EDMEDM C&S Review 2/11/05 #6 Kerr Effect-Liquid He (Berkeley) Measurement: K = (1.43±0.02 (stat) ±0.04 (sys) ) x (cm/V) 2 Theoretical value (1s, 2s, 2p levels): K = 1.7x (cm/V) s HV Stability

EDMEDM C&S Review 2/11/05 #7 Magnetic Field

EDMEDM C&S Review 2/11/05 #8 B-Field Uniformity Low fields and diffusive motion 1% depolarization 3 He sample preparation volume( 200 s) B 0 = 100 mG(dB/dz)/B 0 = 0.2% Transfer tube( 2 s) B 0 = 100  1 mGdB/dz < 1.8 mG/cm Measuring cell(1000 s) B 0 = 1 mG(dB/dz)/B 0 = 0.1%

EDMEDM C&S Review 2/11/05 #9 Magnetic Materials (LANL, Caltech) Magnetic Field Uniformity Room Temperature 1.2 K

EDMEDM C&S Review 2/11/05 #10 Magnetic Materials (LANL, Caltech)   Required 

EDMEDM C&S Review 2/11/05 #11 3 He

EDMEDM C&S Review 2/11/05 #12 SQUID Low-Field NMR (LANL)

EDMEDM C&S Review 2/11/05 #13 3 He Atomic Beam Polarizer (LANL) Device commissioned Flux 4 x atoms/s Average velocity ~150 m/s Polarization measurements (99.6 ± 0.25)% Loading time 300 s

EDMEDM C&S Review 2/11/05 #14 3 He Atomic Beam Polarizer (LANL)

EDMEDM C&S Review 2/11/05 #15 3 He Relaxation (Duke)

EDMEDM C&S Review 2/11/05 #16 3 He Relaxation (UIUC)

EDMEDM C&S Review 2/11/05 #17 4 He

EDMEDM C&S Review 2/11/05 #18 4 He Purifier (HMI, LANL, NCSU) McClintock Heat Flush Technique First sample measured at ANL - 3 He/ 4 He < He/ 4 He mixture Pure 4 He Resistive heater wrapped on capillary Flow control valve Phonons T = 1.2 K

EDMEDM C&S Review 2/11/05 #19 3 He Diffusion (LANL, SFU) Experiment:D = D T T -7 = (1.6 ± 0.2)T -7 cm 2 /s Theory:D = D T T -7 = (1.2 )T -7 cm 2 /s

EDMEDM C&S Review 2/11/05 #20 4 He Purification 3 He velocity must be sufficient to overcome the binding energy to the superfluid 4 He, i.e 0.3 K < T < 0.5 K based on the diffusion coefficient measurement. The pump is a charcoal trap

EDMEDM C&S Review 2/11/05 #21 Neutrons

EDMEDM C&S Review 2/11/05 #22 n-Lifetime (Harvard, NCSU)

EDMEDM C&S Review 2/11/05 #23 Particle ID (HMI, SFU, LANL, NCSU) n( 3 He,t)p e

EDMEDM C&S Review 2/11/05 #24 n-Storage (LANL, SFU, NCSU, Harvard) The cell - 90 cm x 19 cm ID liters UCN/cc gives 2.5 x acrylic coated with d-styrene - can be cooled to ~4 K

EDMEDM C&S Review 2/11/05 #25 Bismuth Filter Ballistic Neutron Guide Section Neutron Beam Splitter Guide Section Fundamental Neutron Physics Hall Dilution Refrigerator Pump Packages 1000 Liter Dewar Neutron Guide (LANL, ORNL)

EDMEDM C&S Review 2/11/05 #26 Cryogenics

EDMEDM C&S Review 2/11/05 #27 Dilution Refrigerator (LANL) Up to 5 mW at 120 mK

EDMEDM C&S Review 2/11/05 #28 SNS Risk Analysis Reprised QuantitySymbolDesignDegradedEDM Loss EDM Limit [95% CL] Wall Loss Time ww >2,000 s500 s1.8 Particle ID30:14:13.0 Background / Signal2:15: He Relaxation Time 33 30,000 s10,000 s1.3 3 He Initial PolarizationP3P3 99%99.6%1.0 SQUID Noise 1  0 10  Trapped Fields  B/B x Electric FieldE50 kV/cm 1.0 Quadrature4.815 x e*cm Murphy's Law (4 worst) 1338 x e*cm