monitoring of fhep teacher research internship fermilab – summer 2011

Monitoring of FHEPMonitoring of FHEP

Teacher Research Internship Fermilab – Summer 2011

Summer InternshipSummer Internship

My nine week internship:My nine week internship: Labview program for FHEPLabview program for FHEP

stress monitoringstress monitoring Hardware testing for stress gauge Hardware testing for stress gauge

monitoringmonitoring Installation of strain gauges on Installation of strain gauges on

FHEPFHEP Ultrasonic gage projectsUltrasonic gage projects

NOvA Neutrino ExperimentNOvA Neutrino Experiment

The NOvA neutrino experiment will The NOvA neutrino experiment will start studying the properties of start studying the properties of neutrinos starting 2013. neutrinos starting 2013.

Construction is scheduled to be Construction is scheduled to be complete in January 2014, and the complete in January 2014, and the first run will last six years.first run will last six years.


BackgroundBackground There are three types of neutrinos: There are three types of neutrinos:

muon, electron and tau muon, electron and tau neutrinos neutrinos Scientist have observed muon Scientist have observed muon

neutrinos oscillate into tau neutrinos oscillate into tau neutrinos. neutrinos. However, scientist have not However, scientist have not observed muon neutrinos observed muon neutrinos oscillating into electron neutrinososcillating into electron neutrinos..

NOvA Neutrino ExperimentNOvA Neutrino Experiment Goals of the experiment:Goals of the experiment:

Observe the oscillation of muon Observe the oscillation of muon neutrinos to electron neutrinosneutrinos to electron neutrinos

Source: Lawrence Berkeley National Laboratory


Discover the order of neutrino Discover the order of neutrino masses: Which one is the masses: Which one is the heaviest? heaviest? Which is the lightest?Which is the lightest?

Discover the symmetry between Discover the symmetry between matter and antimattermatter and antimatter

Source: Jefferson Lab's web server

NOvA Neutrino ExperimentNOvA Neutrino Experiment Neutrinos normally do not interact Neutrinos normally do not interact

with other particleswith other particles A beam of neutrinos will be A beam of neutrinos will be

generated from the NuMI neutrino generated from the NuMI neutrino beambeam

The neutrinos will travel straight The neutrinos will travel straight through the Earth since they rarely through the Earth since they rarely interact with other particles. interact with other particles.

Scientists will use statistics to Scientists will use statistics to determine if the muon neutrinos are determine if the muon neutrinos are oscillating into electron neutrinos.oscillating into electron neutrinos.

NOvA Neutrino ExperimentNOvA Neutrino Experiment The near detector should detect The near detector should detect

mostly muon neutrinos and only a mostly muon neutrinos and only a few electron neutrinos. few electron neutrinos.

If the far detector detects more If the far detector detects more electron neutrinos, then it can be electron neutrinos, then it can be concluded that some of the muon concluded that some of the muon neutrinos have become electron neutrinos have become electron neutrinos during the 500 mile trip to neutrinos during the 500 mile trip to Minnesota. (The neutrinos make this Minnesota. (The neutrinos make this trip in 3 milliseconds).trip in 3 milliseconds).

Source: NOvANOvA documents


The detectors are constructed of highly reflective PVC cells filled with liquid scintillator.scintillator.


NOvA Neutrino ExperimentNOvA Neutrino Experiment The charged particles produced by

the neutrino interaction inside the detector will cause the liquid scintillator to produce light that is captured by optical fibers and carried to light-sensitive detectors.


The near detector: 200 ton detector The near detector: 200 ton detector in the NuMI Service Buildingin the NuMI Service Building

NOvA Neutrino ExperimentNOvA Neutrino Experiment The far detector is 15,000 ton will e The far detector is 15,000 ton will e

located in Ash River, Minnesota.located in Ash River, Minnesota.


FHEP, Full Height Engineering FHEP, Full Height Engineering Prototype of the far detector. Will be Prototype of the far detector. Will be located in the CDF building in in located in the CDF building in in August 2011.August 2011.

FHEPFHEP Stress MonitoringStress Monitoring The liquid scintillator will cause the The liquid scintillator will cause the

PVC cells to stretch especially near PVC cells to stretch especially near the bottom of the detector.the bottom of the detector.

Stress will linearly increase from the top of the block to the bottom of the detector.

Most of the stress is in the range of 300 psi with height below 100“ with the largest amount of stress at approximately 30 “.

strain range is about 1000 micro-strain (at E=0.3mpsi, 6month) and will increase to 4000 micron-strain at 20 years (E=0.07mpsi,20year

Source: Ting MiaoTing Miao

Labview Program for FHEPLabview Program for FHEPStress MonitoringStress Monitoring

Used previous Labview knowledge, Used previous Labview knowledge, National Instruments discussion National Instruments discussion forums, Trial and Error, and Geoffrey forums, Trial and Error, and Geoffrey SchmitSchmit

An ongoing process………An ongoing process………

Labview Program 1 Labview Program 1

Labview Program 2Labview Program 2

Labview Program 3Labview Program 3After numerous changes – the current program not yet complete

Top half of the program

Bottom portion of program for strain gauge graphs and indicators

Front panel of program

Hardware Testing for Stress Hardware Testing for Stress Gauge MonitoringGauge Monitoring

15 National Instruments SG-140 15 National Instruments SG-140 Strain Gauge moduleStrain Gauge module

114 channels114 channels 1 National Instrument RTD-124 1 National Instrument RTD-124

Temperature moduleTemperature module

8 channels8 channels


Unstable connections of module to Unstable connections of module to strain gaugestrain gauge


Solutions – Use of gold connectors Solutions – Use of gold connectors with pin and socket connectorswith pin and socket connectors


Problem – 114 channels with Problem – 114 channels with different at rest (no stress) readingsdifferent at rest (no stress) readings


Solution:Solution:

Null Correction after numerous Null Correction after numerous test and contacting NI supporttest and contacting NI support

Y = k∆T + b

Slope depended on type of strain gauge and temperature

Different for each channel

(120 channels) and temperature dependent

Installation of strain gauges Installation of strain gauges on FHEPon FHEP

Researched epoxy and coating to Researched epoxy and coating to protect strain gaugesprotect strain gauges

M Bond AE-10M Bond AE-10 Researched coating for Stress Researched coating for Stress

gauges to protect them from gauges to protect them from chemicals, environmental, chemicals, environmental,

and mechanical issuesand mechanical issues

What I will take back to the classroom

1. The standard model of the atom2. The opportunities the students

have in the science world and for local internships

3. The process of science – a. More inquiry labsb. More open ended problem solving

Thank You

Mentor: Ting Miao

Guest Scientist: Nickolay Luzhetskiy

TRAC Program Coordinators: Harry Cheung & Bjoern Penning

monitoring of fhep teacher research internship fermilab – summer 2011

Documents

electron neutrinos source

types of neutrinos

properties of neutrinos

oscillation of muon

nova neutrino experimentgoals

neutrino interaction

tau neutrinos scientist

particlesa beam of neutrinos