Lance Garrison R. Cooper, H.-O. Meyer, T. Mikev, L. Rebenitsch, R. Tayloe, R. Thornton

Prototype  n Detector Precise event reconstruction Neutral current elastic (NCel)   s: strange contribution to proton spin Neutrons MeV Energy & direction spectra Important for low background experiments All Experimenters Meeting, FNAL December 19, 2011 At FNAL: MINOS Area Demonstrate  event reconstruction Collect ~500 events Measure n fluxes Cosmogenic & beam related 100 m overburden Z0Z0 N N   N N n n

Design Concept 3D grid of light collecting fibers immersed in liquid scintillator, no optical separation High channel density Readout with custom DAQ incorporating multi-anode PMT system All Experimenters Meeting, FNAL December 19, 2011

The SciBath Detector 80 L liquid scintillator (LS) 88% mineral oil 11% pseudocumene 1% PPO 768 (3-16x16) array wavelength-shifting fibers (x,y,z axes) 1.5 mm diameter 2.5 cm spacing UV → blue All Experimenters Meeting, FNAL December 19, 2011

The SciBath Detector Pulsed LED calibration All Experimenters Meeting, FNAL December 19, 2011

The SciBath Detector N 2 and LS plumbing All Experimenters Meeting, FNAL December 19, 2011

The SciBath Detector Electronics readout & PMTs All Experimenters Meeting, FNAL December 19, 2011

The SciBath Detector Electronics readout & PMTs All Experimenters Meeting, FNAL December 19, 2011

Timeline: SciBath at Fermilab All Experimenters Meeting, FNAL Production runs at ~0.5 pe threshold, 24/7 Calibration, runs at > 0.5 pe threshold Move, installation, setup, training, safety approval December 19, 2011

Deployment All Experimenters Meeting, FNAL December 19, 2011 SciBath Installed in MINOS near detector area, next to COUPP ~5 mrad off axis of NUMI beam

Monitoring Dual camera monitoring (plumbing & IRMs) Agilent power supply web controllable Full run control and monitoring available remotely 24/7 monitoring Expert on call within 30 min of detector All Experimenters Meeting, FNAL December 19, 2011

Monitoring Dual camera monitoring (plumbing & IRMs) Agilent power supply web controllable Full run control and monitoring available remotely 24/7 monitoring Expert on call within 30 min of detector All Experimenters Meeting, FNAL December 19, 2011

Monitoring Dual camera monitoring (plumbing & IRMs) Agilent power supply web controllable Full run control and monitoring available remotely 24/7 monitoring Expert on call within 30 min of detector All Experimenters Meeting, FNAL December 19, 2011

Monitoring Dual camera monitoring (plumbing & IRMs) Agilent power supply web controllable Full run control and monitoring available remotely 24/7 monitoring Expert on call within 30 min of detector All Experimenters Meeting, FNAL December 19, 2011

SciBath at Fermilab Overview Achievements Data Rates (~0.5 pe trigger) 6000Hz total, 500Hz per readout board, 8Hz per channel 1.7MB/s, 5.7GB/hr, 6.5TB total POT as of 12/12/11 6.4x10 19 POT total 4.8x10 19 POT production quality 95% live time, optimum 87% live time, overall Projected Final Results 7.5x10 19 POT total ~900 cosmic n ~300 events Goals ~500  events Requires ~10 20 POT Measure beam induced n flux Measure cosmic n flux ~20 events/day, ~60 days All Experimenters Meeting, FNAL December 19, 2011 Beam Configuration  Events for POT: CC Inclusive (CC quasi-elastic) : Low E 550 (100) : Med E (1400)  : Low E 200 (30) : Med E4000 (1300)

Preliminary Results: Muon Event Display All Experimenters Meeting, FNAL Top View Side View Approximate Beam Direction December 19, 2011 Box Size ≈ Light Collected

Preliminary Results: Beam Response All Experimenters Meeting, FNAL December 19, 2011

Preliminary Results: Beam Time Regions December 19, 2011 All Experimenters Meeting, FNAL

December 19, 2011 Preliminary Results:

All Experimenters Meeting, FNAL December 19, 2011 Preliminary Results:

All Experimenters Meeting, FNAL December 19, 2011 Preliminary Results: Candidate n capture events!

SciBath (Near) Future Power down and drain LS to reservoir tank Leave detector underground over holidays Move to MINOS service building in January for 1 week calibration run No beam, cosmic , n Possible n flux measurement at MI-12 in Spring All Experimenters Meeting, FNAL December 19, 2011

Summary SciBath is an efficient 3D charged particle tracking detector → reconstruct neutral events Deployed at FNAL in MINOS near hall Desire to measure neutron backgrounds (cosmogenic and beam-related) Measure neutrino interactions ~2 months data collection ends this week! 1 week run in MINOS service building in January Possible run in MI-12 in Spring THANK YOU Fermilab! All Experimenters Meeting, FNAL December 19, 2011

Contact Us PI: Rex Tayloe Cell: (812) Office: (812) Graduate Student: Lance Garrison Cell: (573) WH10W: Postdoc: Robert Cooper Cell: (734) Other Group Members on this run of SciBath Graduate Student: Lori Rebenitsch Student Intern: R. Tyler Thornton Other Contributors to SciBath detector Technical / Engineering: Brandon Kunkler, Shing-Shong Shei, Gerard Vissar Faculty: H.-O. Meyer Former students: Melanie Novak (Gr.), Tyler Mikev (UGr.) All Experimenters Meeting, FNAL December 19, 2011

Anticipated Sensitivity (n events) Cosmogenic & beam-related, muon-induced n 100 m of rock overburden ⇒ 20 n / day Energy / direction spectra not well characterized* All Experimenters Meeting, FNAL *Mei & Hime, Phys. Rev. D (2006)) December 19, 2011

Low-Cost Digitization Solution 64-channel Integrated Readout Module 12-bit flash ADCs FPGA logic ARM-9 micro-controller with embedded Linux kernel “Ringing” oscillator input shaping 6U VME form factor (no VME backplane power) Ethernet transmission Built custom “in-house” All Experimenters Meeting, FNAL December 19, 2011

Low-Cost Digitization Solution 64-channel Integrated Readout Module 12-bit flash ADCs FPGA logic ARM-9 micro-controller with embedded Linux kernel “Ringing” oscillator input shaping 6U VME form factor (no VME backplane power) Ethernet transmission Built custom “in-house” All Experimenters Meeting, FNAL Power Inpu t ADCs FPGAs ARM- 9 December 19, 2011

Low-Cost Digitization Solution 64-channel Integrated Readout Module 12-bit flash ADCs FPGA logic ARM-9 micro-controller with embedded Linux kernel “Ringing” oscillator input shaping 6U VME form factor (no VME backplane power) Ethernet transmission Built custom “in-house” All Experimenters Meeting, FNAL December 19, 2011