Lance Garrison R. Cooper, H.-O. Meyer, T. Mikev, L. Rebenitsch,
R. Tayloe, R. Thornton
Slide 2
Prototype n Detector Precise event reconstruction Neutral
current elastic (NCel) s: strange contribution to proton spin
Neutrons 1-100 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
Slide 3
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
Slide 4
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
Slide 5
The SciBath Detector Pulsed LED calibration All Experimenters
Meeting, FNAL December 19, 2011
Slide 6
The SciBath Detector N 2 and LS plumbing All Experimenters
Meeting, FNAL December 19, 2011
Slide 7
The SciBath Detector Electronics readout & PMTs All
Experimenters Meeting, FNAL December 19, 2011
Slide 8
The SciBath Detector Electronics readout & PMTs All
Experimenters Meeting, FNAL December 19, 2011
Slide 9
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
Slide 10
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
Slide 11
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
Slide 12
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
Slide 13
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
Slide 14
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
Slide 15
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 10 20 POT: CC Inclusive (CC quasi-elastic)
: Low E 550 (100) : Med E 12000 (1400) : Low E 200 (30) : Med E4000
(1300)
Slide 16
Preliminary Results: Muon Event Display All Experimenters
Meeting, FNAL Top View Side View Approximate Beam Direction
December 19, 2011 Box Size Light Collected
Slide 17
Preliminary Results: Beam Response All Experimenters Meeting,
FNAL December 19, 2011
Slide 18
Preliminary Results: Beam Time Regions December 19, 2011 All
Experimenters Meeting, FNAL
Slide 19
December 19, 2011 Preliminary Results:
Slide 20
All Experimenters Meeting, FNAL December 19, 2011 Preliminary
Results:
Slide 21
All Experimenters Meeting, FNAL December 19, 2011 Preliminary
Results: Candidate n capture events!
Slide 22
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
Slide 23
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
Slide 24
Contact Us PI: Rex Tayloe ([email protected]) Cell: (812)
219-1906 Office: (812) [email protected] Graduate
Student: Lance Garrison ([email protected]) Cell: (573) 999-9409
WH10W: [email protected] Postdoc: Robert Cooper
([email protected]) Cell: (734) [email protected]
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
Slide 25
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 73 053004
(2006)) December 19, 2011
Slide 26
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
Slide 27
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
Slide 28
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
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