A Small Van De Graaff Accelerator
Brian Winey, Prof. M. Yuly, Houghton College,
A small, low-cost Van de Graaff electrostatic
accelerator capable of accelerating electrons and producing bremsstrahlung
x-rays has been constructed using components commonly found in most undergraduate
physics laboratories. The electrons originate within the negative high-voltage
terminal and are accelerated by a uniform electric field through an evacuated
glass tube. Electron currents of up to 6 m
A were collected in a Faraday cup. The end-point of the bremsstrahlung
x-ray energy spectrum has been measured to be between 200 and 300 keV.
Detection of W ®m n Decays in Proton-Antiproton Collisions
Andrew Kowalik, Prof. Paul Tipton, University of 91自拍论坛
In 1995, the top quark was discovered
at Fermi National Laboratory. Since the top quark nearly always decay to
W抯, understanding the detection of one of the W抯 decay modes in single
W events, is potentially useful for later top studies. Additionally, this
type of decay has not been investigated since the collider detector was
upgraded for its second data collection run. Using off-line physics data
and related processing tools we developed a filter module to separate probable
W ®
m n
events from a data sample of muon candidates. Though our work was still
in progress at the time of my departure, there is evidence that these decays
may be identified successfully by setting simple limits on muon and detector
variables, including momentum, calorimetry, and isolation measurements.
A Table-Top Apparatus to Measure the Magnetic Moment of the Muon
D. Ely, D. Kroening, Prof. M. Yuly. Houghton College
An apparatus was constructed to measure
the magnetic moment of cosmic ray muons using their precession in a uniform
magnetic field. A 102.0 ´
20.6 ´
5.4 cm plastic scintillator was sandwiched between two 102.0 ´
20.6 ´
1.6 cm scintillators inside a uniform, 44 G magnetic field. A small veto
scintillator eliminated events occurring in the non-uniform region of the
field, which was produced by a large solenoid. A logic circuit identified
muons stopping in the center scintillator and, and the subsequent decay
of these muons. The time difference between the muon stopping and its decay
was recorded for about 67,000 events, allowing the decay constant and the
magnetic moment to be determined.
A Measurement of the Muon Magnetic Moment Using Cosmic Rays
D. Kroening, D. Ely and M. Yuly. Houghton College
The muon magnetic moment was measured
via the decay of polarized cosmic-ray muons in a constant magnetic field
with a three-scintillator detector system. Cosmic-ray muons stop in the
central detector, precess in the magnetic field, and then decay by emitting
a positron along the muon spin axis. A quantum-mechanical calculation allows
the g-factor to be extracted from a measurement of the number of positrons
emitted into one direction as a function of decay time. The tentative results
are t
= 2.12 ±
0.03 m
s (mean decay time) and g = 2.79 ±
0.06, where the uncertainty does not include systematic effects.
Determining the Depth of a Buried Object Using Gamma-ray Spectroscopy
Jessica Gary, Dr. E. Naessens, C. Ross Schmidtlein, Brian Moretti, U.S. Military Academy, West Point
We propose a method of determining the depth of buried objects by directing gamma-ray from a known source towards the object and using gamma-ray spectroscopy to observe the uncollided energy peak from Compton scattering from the object. From the known source/detector geometry and the measured uncollided photon energy, we can calculate the round trip distance that gamma rays have traveled from the source to the detector. We will present both simulations and experimental data to validate our approach. Monte Carlo calculations of scattering from disks of various materials buried in several different media at various depths give a small systematic shift that depends on both the material and the thickness of the disk. Possible source of this systematic shift will be discussed,
ASNY/RSPS Joint Session
Magnetorotational Instability of Liquid Metal Couette Flow
Jason Nordhaus, 91自拍论坛, Prof. S. Colgate, Los Alamos National Laboratory, NM
Despite the importance of the magnetorotational
instability (MRI) as a fundamental mechanism in magnetized accretion disks,
it has yet to bedemonstrated in the laboratory. A liquid sodium alpha-omega
dynamo experiment at the New Mexico Institute of Mining and Technology
provides an ideal environment in which one might study the MRI in a rotating
metal annulus (Couette flow). Local stability analysis is performed while
taking into account the formation of an Ekman layer against the rigidly
rotating cylindrical boundaries. Stability conditions are presented and
unstable regions are identified in terms of magnetic field strength and
shear flow. Unstable conditions for the sodium experiment are compared
with another proposed MRI experiment with liquid gallium.
THE 2001 OUTBURST OF BLAZAR 3C 279
Jeyhan Kartaltepe, Prof. Thomas J. Balonek, Colgate Univesity
This study looks at the long and short
time scale variations of the blazar 3C 279 throughout the 2001 optical
outburst, but concentrates on the intra-night and night-to-night variations
during the intense outburst. This outburst was the most violent outburst
(with variations in brightness of over three magnitudes) seen in thirteen
years of study at Colgate University. Observations were conducted at Colgate抯
Foggy Bottom Observatory using a sixteen-inch Cassegrain telescope and
CCD camera. The outburst began in March, after 3C 279 had faded to its
faintest level, R = 15.5, in four years. The source was still active in
early August, at its brightest level, R = 12.5, in the thirteen years of
our study, at which time it became unobservable due to its proximity to
the Sun. Since becoming observable again in mid-November, 3C 279 has fluctuated
between R=14.0 and R=14.5. The source exhibited numerous week-long flares
of approximately one magnitude during the six-month outburst period. Superposed
on these flares were night-to-night variations of up to one half magnitude
and intra-night microvariability of 0.2 magnitude in five hours. We compare
the optical light curve to an x-ray light curve for this same time period
to look for possible correlations.
Optical Variability of the Blazar BL Lacertae
Meredith Tanguay, Prof. Thomas J. Balonek, Colgate University
BL Lacertae, a complex, highly variable
blazar, has been observed at optical wavelengths for 13 years with Colgate
University's Foggy Bottom Observatory 16"± telescope. Data reduction
is accomplished in IRAF with the aid of Colgate-specific scripts. Investigation
of the variability allows us to probe the physical processes of this object,
the prototype for the BL Lac category. This study focuses on R-filter CCD
data taken between summer 2000 and spring 2002. The variability timescale
and profile of flares during this outburst period are examined in both
magnitude and flux. The effects of overlapping flaring events on the observed
light curve are also explored
Elementary Climate Modeling
Laura Schmidt, Profs. H.L. Helfer and R.S. Knox, 91自拍论坛
Complete climate models are very complicated
and emphasize hydrodynamics, obscuring the underlying physical energy fluxes.
Our simpler model attempts to gain a qualitative understanding of global
energy transfers without the added complexity. This model is an extension
of a 2-temperature climate model that uses globally and annually averaged
parameters to one that uses local parameters adapted to perform computations
on a monthly as well as yearly basis. The local parameters are stored in
grid of 864 cells representing areas on the globe and the energy balance
is carried out on each cell individually. The two temperature model solves
energy balances for steady-state on the surface and atmospheric layers,
taking into account reflection and absorption of the solar radiation in
the UV region, the emission of the layers in the IR region, and a term
included for non-radiative transfer between the layers. The steady-state
assumption breaks down at monthly level because the non-radiative term
must compensate for lack of inclusion of a phase lag between the solar
flux and the surface temperature time variations. Investigating this phase
lag by comparing monthly zonal averages of the non-radiative energy flux
to the surface temperature is the current focus.
Poster Session
Neutron-Duetron Scattering as a Probe of the Three-Nucleon
Pete Brady, Rachael DeYoung, Daniel Kroening, S. Tuminaro, and Prof. M. Yuly, Houghton College
Previous experimental and theoretical
studies are unclear regarding the existence and role of the three-nucleon
force in nuclear interactions. An experiment is being performed at the
Los Alamos Neutron Science Center (LANSCE) to measure the d(n,dn) cross-section
for incident energies of 100 MeV to 700 MeV and deutron angles of 24º,
30º, 36º, 42º, 28º, and 54º to the incident beam.
These results will eventually be compared to theorectical predictions for
this reaction with and without inclusion of the three-nucleon force.
Using the (n,2p) Reaction to Ssearch for a Preexisting Nuclear D++ Component
Rachael DeYoung, Prof. M. Yuly, Houghton College
The 3He(n,2p)2n and the 4He(n,2p)3n
cross-sections are being measured as a means to explore the D++
contribution to the nuclear wave function. The incident neutron beam ranged
between 200 and 500 MeV. Scattered protons passed through magnetic spectrometers
centered 45º to the right and left of the beam line. Each spectrometer
consisted of a thin D
E scintillator, a wire chamber, a permanent bending magnet, a wire chamber,
and a detection barrier of three stacked scintillators.
Atomic, Molecular, Optical, And Biological Physics
Double Pump-Probe Laser Transmission through an Organic Dye
Dennis Mackin, Jason Choi, Dr. M. Donovan, U. S. Military Academy, West Point
We are using a versatile, new material
characterization technique that measures the time-resolved change in optical
transmission of a substance due to a sequence of two intense, ultrashort
(40 ps) laser pulses. With this technique, we are able to simultaneously
determine several excited state parameters of an organic dye. Ultimately,
the data that we gather will be used in the development of a new class
of materials called reverse saturable absorbers. The method is based on
the concept of using the pump laser to produce a nonlinear change in the
transmission of light through the dye while using the probe laser to monitor
this change. The probe pulse is made to arrive at a sequence of delays,
from arriving simultaneous with the first pump pulse to arriving well after
the second pump pulse. This allows us to plot sample transmission versus
time, which we then match to a set of rate equations developed by our collaborator
Dr. Timothy Pritchett. Our immediate aim is to validate the improvements
in the rate equations over the original double pump-probe experiments.
Spin Precession in a Two-Level System
David Etlinger, Prof. J. Eberly, University of 91自拍论坛
Many systems in physics can be approximately modelled by an idealized system of just two energy levels. For example, an electron has two spin states which, in the presence of external fields, possess different energies. In isolation, such a system will exhibit limited dynamics, at most precessing about one or the other energy level. In the presence of an external pump,such as a laser, the system will oscillate between the two states. A standard approximation gives a surprisingly simple result for this model.
The results are most easily derived
through the Heisenberg picture of dynamics, which is equivalent to other
formulations of quantum mechanics but is not often taught at the undergraduate
level. The main goal of our research is to couple such a system to random
environments of varying dimensions and investigate the resulting decoherence
times.
Rotating Tractor Beams: Controlled Rotation of Microorganisms in an Optical Trap
Adam Weiss, Prof. E. Galvez, Colgate University
Using a modified single beam gradient
trap, we can trap, translate, and rotate yeast cells. A laser that produces
transverse modes is used in a laser tweezers setup to control the rotational
orientation of irregular objects, including microorganisms. This capability
could be very useful to biologists in the study of microscopic life. Our
system allows for full control of objects in two dimensions.
Alzheimer抯 Disease: Inhibiting the Aggregation of the Amyloid b Peptide
Hunter Karmel, Binghamton University, David Callaway, Picower Institute
The widespread deposition of plaques
within the brain parenchyma and vasculature is one of the hallmarks of
Alzheimer抯 disease. These protease resistant fibrillar sediments are constituted
primarily by a 39-42 amino acid residue peptide referred to as the b
-amyloid. For this reason the Amyloid- b
peptide (Ab
) seems to play a central role in the neuropathology of Alzheimer抯 disease.
Ligands with the capability of inhibiting the process by which the b
-amyloid polymerizes into these plaques could provide a powerful tool for
the creation of therapeutic agents. To choose these ligands, an explicit
knowledge of the polymerization process and the molecular conformation
of the peptides is critical. X-ray crystallography and NMR have not been
capable of providing the structural details required for ligand design.
We approach the problem theoretically by constructing a three dimensional
model of the Ab
molecule such that it will be possible to choose compounds for the inhibition
of amyloidogenesis which then can be experimentally validated.
Electronic Structure of Mn12-Acetate
S. M. Oppenheimer, Binghamton University, A. B. Sushkov, and J. L. Musfeldt, University of Tennessee, Knoxville
We report transmittance and polarized reflectance measurements of crystalline Mn12-acetate over a wide frequency range (600-50,000 cm-1) to investigate the electronic structure of this prototypical molecular magnet. Overall, the spectral features are quite diffuse down to 10 K, although a number of Mn inner -> outer d -> d and outer p -> Mn d charge transfer excitations are observed and assigned. The two lowest energy excitations (at 13,500 and 15,900 cm-1) are polarized perpendicular to the easy magnetization c axis. Optical gaps are estimated at 8,750 cm-1 (1.08 eV) and 14,000 cm-1 (1.75 eV), corresponding to minority and majority gaps, respectively.
Material Science
Microfabricated Striplines for Measuring the High Frequency Response of Carbon Nanotubes
Michael S. Fine, Dr. Beth Parks, Colgate University
Carbon nanotubes are ideal one-dimensional
conductors that are being developed as elements in molecular electronics.
Understanding their high frequency electrical properties is instrumental
to this development. In this study, transmission lines are utilized to
measure these high frequency properties. Using a mode-locked, ti-sapphire
laser, short pulses are created and detected as they propagate down each
transmission line. The absorption of specific frequencies in these pulses
by single nanotubes will provide information about the tube抯 high frequency
characteristics. This project is ongoing. Microfabrication was completed
at Cornell抯 Nanofabrication Facility
Assembly and Calibration of a Vibrating Sample Magnetometer for Magnetic Measurements
Eric Holt, Sunil Labroo, Joshua Vanderpool, Chung Wong, SUNY at Oneonta, Dale Zych, SUNY at Oswego
We report on the assembly and calibration
of a vibrating sample magnetometer (VSM). This VSM uses a 1.0 Tesla electromagnet,
a mechanism for sample vibration, and a signal detection system that utilizes
a Stanford Research SR530 lock-in amplifier. Currently this VSM is configured
for a variable temperature range from room temperature to about 900 K using
a Lakeshore model 330 temperature controller. Data is acquired by a PC
with an IEEE-488 interface. In this study we will present some preliminary
data on standard magnetic samples and an estimate of the sensitivity of
the VSM.
Borated Tungsten as a Potential Material for Kinetic Energy Penetrators
Troy D. Scribner, Philip D. Sacks, Anthony W. Clark, Morgan D. Greene, Dr. Lee E. Harrell, A.K. Pallone, U.S. Military Academy, West Point
During US involvement in the Gulf War,
depleted uranium (DU) weapons proved to be more effective than rounds used
in previous conflicts due to DU抯 high ductility which causes self-sharpening
on impact. However, the environmental concerns associated with the use
of DU led to the search for an alternative material. One alternative under
investigation is tungsten. Although tungsten possesses many of the same
desirable physical characteristics as DU, its low ductility causes tungsten
rounds to mushroom on impact decreasing their armor piercing effectiveness.
By doping tungsten with boron atoms at 10-30 ppm, there is reason to believe
that we can increase the ductility of tungsten to overcome the problem
of mushrooming.
Determination of the Diffusion Constant of Boron Along Grain Boundaries in Polycrystalline Tungsten
Anthony W. Clark, Morgan D. Greene, Philip D. Sacks, Troy D. Scribner, A.K. Pallone, Dr. Lee E. Harrell, U.S. Military Academy, West Point
In order to better engineer future boron-doped
tungsten rounds, the diffusion behavior of boron in polycrystalline tungsten
needs to be understood. To study this behavior, boron is first deposited
on the surface of polycrystalline tungsten samples. Then the samples are
annealed at known temperatures for a known periods of time. Through nuclear
reaction analysis, the depth profile of boron concentration in the annealed
samples can be determined. Through application of Fick抯 laws, theoretical
curves for the depth profile can be generated. By fitting the theoretical
curves to the data, the activation energy and the temperature independent
diffusion coefficient of boron along the grain boundaries of polycrystalline
tungsten can be determined.
Application of Nuclear Reaction Analysis to Depth Profiling of Boron Concentration in Polycrystalline Tungsten
Philip D. Sacks, Troy D. Scribner, Anthony W. Clark, Morgan D. Greene, Dr. Lee E. Harrell, A.K. Pallone, U.S. Military Academy, West Point
B can combine with a proton to form
12C plus an energetic photon. While the reaction can occur for
any proton energy, a resonance exists for absorption of the proton at 163
keV. This reaction can be used to find the concentration of boron in tungsten
as a function of depth. The rate at which a proton loses energy as it passes
through polycrystalline tungsten is well understood. By irradiating samples
of boron-doped polycrystalline tungsten with protons of known incident
energy, one can calculate the depth at which the resonance occurs. The
number of characteristic photons detected is directly proportional to the
concentration of boron at that depth. Coincidence techniques used to reduce
background events will be discussed.
Study of Depressed Melting in Thin Film Multilayers
Elisa Pueschel, E. J. Cotts, Binghamton University
Lower melting temperatures have been observed in particles of small radii than are observed in bulk samples of the same materials. We observed the melting of thin film multilayers using a differential scanning calorimeter. Multilayers of aluminum and tin were produced by vapor deposition. Aluminum and tin were chosen because they form a simple eutectic system. The nominal thickness varied from 80 angstroms for a fifty-fifty stoichiometry to 120 angstroms for an eighty-twenty tin-rich composition. High angle x-ray diffraction was used to verify that the samples were composed of pure metals, without significant amounts of alloy. Calorimetric scans recorded three melting signals. Two of the peaks occurred at temperatures close to the accepted values for tin melting and aluminum/tin eutectic melting. The third peak was observed as many as ten degrees lower than the eutectic melting temperature. This result points to a correlation between small particle size in a eutectic system and decreased melting temperature. ./2002/index.html 000755 000766 000024 00000003051 07477152205 014271 0 ustar 00munson staff 000000 000000
INTRODUCTION
Welcome to the twenty-first annual 91自拍论坛 Symposium for Physics Students. This series of symposia was instituted to provide an opportunity for undergraduates to present an account of their own personal research at a meeting whose format was chosen to closely resemble those of professional scientific societies.
At RSPS symposia, research projects have been presented in talks by undergraduates representing many regional institutions. Talks by undergraduates have covered topics in condensed matter physics, atomic physics and optics, computational physics, astronomy, high-energy physics, instrumentation and techniques, and environmental physics. The abstracts of all the participants' papers are published annually in a volume of the proceedings and distributed to the participants.
Your audience will include both students and faculty members, and will provide you with the opportunity to address a knowledgeable and appreciative assembly of fellow researchers.
Scientific research is
an extraordinary activity. To quote Albert Einstein: "The most incomprehensible
thing about the universe is that it is comprehensible." I certainly hope
that many of you will decide to pursue careers which involve you intimately
in mankind抯 great intellectual adventure � to comprehend nature.
Arie Bodek, Chair
Department of Physics
and Astronomy
./2002/program_2002.html 000755 000766 000024 00000044727 07477663271 015325 0 ustar 00munson staff 000000 000000
Department of Physics and Astronomy
91自拍论坛, New York 14627-0171
ROCHESTER SYMPOSIUM FOR PHYSICS
STUDENTS
April 20, 2002
PROGRAM
8:30-9:00 Lobby RSPS Registration, Sign-ups for Optional Laboratory Tours, and Room 208 Coffee
9:15-10:30 Room 106 Nuclear and Particles
Session Chair: Prof. Robert Pompi, Binghamton University
9:15
A Small Van DeGraaf Accelerator
Brian Winey, Prof. M. Yuly, Houghton College
9:30
Detection of W ®mn
Decays in Proton-Antiproton Collisions
Andrew Kowalik, Prof. Paul Tipton, 91自拍论坛
9:45
A Table-Top Apparatus to Measure the Magnetic Moment of the Muon
David Ely, Daniel Kroening, Prof. M. Yuly, Houghton College
10:00
A Measurement of the Muon Magnetic Moment Using Cosmic Rays
Daniel Kroening, David Ely, Prof. M. Yuly, Houghton College
10:15
Determining the Depth of a Buried Object Using Gamma-ray Spectroscopy
Jessica Gary, Dr. E. Naessens, C. Ross Schmidtlein, Brian Moretti, U.S.
Military Academy, West Point
9:30-10:30 Room 109 ASNY/RSPS Joint Session
Session Chair: Prof. Judith L. Pipher, 91自拍论坛
9:30
Magnetorotational Instability of Liquid Metal Couette Flow
Jason Nordhaus, 91自拍论坛, Prof. Stirling Colgate, Los Alamos
Laboratory, NM
9:45
The 2001 Outburst of Blazar 3C 279
Jeyhan Kartaltepe, Prof. Thomas J. Balonek, Colgate University
10:00
Optical Variability of the Blazar BL Lacertae
Meredith Tanguay, Prof. Thomas J. Balonek, Colgate University
10:15
Elementary Climate Modeling
Laura Schmidt, Profs. H.L. Helfer and R.S. Knox, 91自拍论坛
10:30-10:50 Break and Poster Session, Room 208
Neutron-Deuteron Scattering as a Probe of the Three-Nucleon Force
Pete Brady, Rachael DeYoung, Daniel Kroening, Sharon Tuminaro, Prof. M.
Yuly, Houghton College
Using the (n,2p) Reaction to Search for a Preexisting Nuclear D++Component
Rachael DeYoung, Prof. M. Yuly, Houghton College
10:50-12:05 Room 106 Atomic, Molecular, Optical and Biological Physics
Session Chair: Prof. Enrique Galvez, Colgate University
10:50
Double Pump-Probe Laser Transmission Through an Organic Dye
Dennis Mackin, Jason Choi, Dr. M. Donovan, U.S. Military Academy, West
Point
11:05
Spin Precession in a Two-Level System
David Etlinger, Prof. J. Eberly, 91自拍论坛
11:20
Rotating Tractor Beams: Controlled Rotation of Microorganisms in an Optical
Trap
Adam Weiss, Prof. E. Galvez, Colgate University
11:35
Alzheimer抯 Disease: Inhibiting the Aggression of the Amyloid b
Peptide
Hunter Karmel, Binghamton University, Professor David Callaway, Picower
Institute
11:50
Electronic Structure of Mn12-Acetate
S.M. Oppenheimer, Prof. Robert Pompi, Binghamton University, A.B. Sushkov
and J.L. Musfeldt, University
of Tennessee
12:05-1:15
RSPS and ASNY Lunch � The Meliora, Salon D
1:15-2:45 Room 106 Material Science
Session Chair: Prof. Mohammed Tahar, SUNY at Brockport
1:15
Microfabricated Striplines for Measuring the High Frequency Response of
Carbon Nanotubes
Michael S. Fine, Prof. Beth Parks, Colgate University
1:30
Assembly and Calibration of a Vibrating Sample Magnetometer for Magnetic
Measurement
Eric Holt, Prof. Sunil Labroo, Joshua Vanderpool, Chung Wong, SUNY at Oneonta,
Prof. Dale Zych, SUNY at Oswego
1:45
Borated Tungsten as a Potential Material for Kinetic Energy Penetrators
Troy D. Scribner, Philips D. Sacks, Anothony W. Clark, Morgan D. Greene,
Dr. Lee E. Harrell, A.K. Pallone,
U.S. Military Academy, West Point
2:00
Determination of the Diffusion Constant of Boron Along Grain Boundaries
in Polycrystalline Tungsten
Anthony W. Clark, Morgan D. Greene, Philip D. Sacks, Troy D. Scribner,
A.K. Pallone, Dr. Lee E. Harrell,
U.S. Military Academy, West Point
2:15
Application of Nuclear Reaction Analysis to Depth Profiling of Boron Concentration
in Polycrystalline Tungsten
Philip D. Sacks, Troy D. Scribner, Anthony W. Clark, Morgan D. Greene,
Dr. Lee E. Harrell, A.K. Pallone,
U.S. Military Academy, West Point
2:30
Study of Depressed Melting in Thin Film Multilayers
Elisa Pueschel, Prof. E.J. Cotts, Binghamton University
2:45 Refreshments to Go, Room 208
Optional Tours (signups are requested)
2:50
Cars should leave for Laboratory for Laser Energetics
or
2:50
Research Labs in Bausch and Lomb Building
SPEAKER INDEX
Name Time Location
Brady, Pete
10:30
Room 208
Clark, Anthony
2:00
Room 106
DeYoung, Rachael
10:40
Room 208
Ely, David
9:45
Room 106
Etlinger, David
11:05
Room 106
Fine, Michael
1:15
Room 106
Gary, Jessica
10:15
Room 106
Holt, Eric
1:30
Room 106
Karmel, Hunter
11:35
Room 106
Kartaltepe, Jeyhan
9:45
Room 109
Kroening, Daniel
10:00
Room 106
Kowalik, Andrew
9:30
Room 106
Mackin, Dennis
10:50
Room 106
Nordhaus, Jason
9:30
Room 109
Oppenheimer, S.M.
11:50
Room 106
Pueschel, Elisa
2:30
Room 106
Sacks, Philip
2:15
Room 106
Schmidt, Laura
10:15
Room 109
Scribner, Troy
1:45
Room 106
Tanguay, Meredith
10:00
Room 109
Weiss, Adam
11:20
Room 106
Winey, Brian
9:15
Room 106