US Pat. No. 9,629,231

ELECTRON BEAM CONTROL FOR BARELY SEPARATED BEAMS

JEFFERSON SCIENCE ASSOCIA...

1. A method of independently controlling multiple, barely separated beams in a common transport pipe, comprising:
providing a magnet arrangement including at least two multipole magnets spaced closely together and having a multipole distribution
including at least one odd multipole and one even multipole;

placing the closely spaced multipole magnets in the path of the barely separated beams; and
tuning the magnetic fields to cancel out a first of the barely separated beams to enable independent control of the second
beam with common magnets.

US Pat. No. 9,629,230

RF KICKER CAVITY TO INCREASE CONTROL IN COMMON TRANSPORT LINES

JEFFERSON SCIENCE ASSOCIA...

1. A method of controlling electron bunch types having various specific energies in an energy recovered linac (ERL) having
a common transport pipe with an upstream end and a downstream end, comprising:
providing a radio frequency (RF) kicker cavity at the upstream end of the common transport pipe;
providing RF energy to the kicker cavity;
selecting electron bunches at a first specific energy to be kicked in energy by the kicker cavity;
setting an operational RF frequency of the kicker cavity at a multiple of the frequency at which the selected electron bunches
pass through the common transport pipe; and

applying RF energy to the kicker cavity to provide a kick in the energy of the selected electron bunches to separate the selected
bunches in phase space from any bunches not at the specific energy of the selected electron bunches.

US Pat. No. 9,655,227

SLOT-COUPLED CW STANDING WAVE ACCELERATING CAVITY

JEFFERSON SCIENCE ASSOCIA...

12. A method for high efficiency continuous wave (CW) graded beta acceleration, comprising:
a. providing a particle accelerator including a plurality of interconnected cells of varying length separated by walls there
between, the interconnected cells including a center symmetric axis, a gap spacing, a cell length, and a cone having a cone
angle;

b. providing a plurality of non resonant coupling slots on the walls between the interconnected cells to enable a pi-mode
oscillating field;

c. axially aligning the coupling slots in the walls along an axis parallel with and offset to a common side from the center
symmetric axis;

d. varying the gap spacing and cell length throughout the length of the interconnected cells to accommodate varying beta;
e. maintaining a constant cone angle throughout the interconnected cells; and
f. limiting the extent of each of said coupling slots to no more than an angle of 60 degrees around the center symmetric axis.

US Pat. No. 9,699,881

DIAPHRAGM FLANGE AND METHOD FOR LOWERING PARTICLE BEAM IMPEDANCE AT CONNECTED BEAM TUBES OF A PARTICLE ACCELERATOR

JEFFERSON SCIENCE ASSOCIA...

1. A diaphragm flange, comprising:
a. an annular outer ring including one or more bolt holes and an inner periphery;
b. a first side having a flat surface a second side having a flat surface;
c. an annular diaphragm integral with and extending from the inner periphery of the outer ring;
d. an opening in said annular diaphragm; and
e. finger stock extending around said inner periphery of said outer flange, said finger stock reducing the wake field reflections
and reducing beam impedance across said diaphragm flange.

US Pat. No. 9,067,385

HIGH KINETIC ENERGY PENETRATOR SHIELDING AND HIGH WEAR RESISTANCE MATERIALS FABRICATED WITH BORON NITRIDE NANOTUBES (BNNTS) AND BNNT POLYMER COMPOSITES

Jefferson Science Associa...

1. A method for manufacturing an impact resistant material, comprising:
synthesizing a boron containing nanomaterial/polymer material from a boron containing nanomaterial, wherein the boron containing
nanomaterial comprises boron, nitrogen, carbon and hydrogen, and a matrix by controlled dispersion of the boron containing
nanomaterial into the matrix; and

applying the synthesized material to an object to be protected from impact.

US Pat. No. 9,059,361

MAGNESIUM DOPING OF BORON NITRIDE NANOTUBES

JEFFERSON SCIENCE ASSOCIA...

1. A method of producing MgB2 boron nitride nanotubes, the method comprising:
(a) providing an integrated production apparatus, the apparatus comprising: a pressurized reaction chamber containing a continuously
fed boron-magnesium containing target having a boron and magnesium target tip, a source of pressurized nitrogen and a moving
belt condenser apparatus including a belt surface; a target feed system wherein the target feed system provides a continuously
fed boron and magnesium containing target to the pressurized reaction chamber; a nitrogen control system in communication
with the pressurized nitrogen; and a laser beam and optics wherein the optics direct the laser beam though a laser beam tube
and into the pressurized reaction chamber;

(b) providing nitrogen gas to the pressurized reaction chamber to maintain a pressure of about 50 to 1000 psi in the pressurized
reaction chamber;

(c) providing a laser beam and maintaining a laser power within the range of 100 to 25,000 W;
(d) directing the laser beam to the tip of the boron-magnesium target; and
(e) collecting MgB2 boron nitride nanotubes on the belt surface of the moving belt condenser apparatus.

US Pat. No. 9,696,517

INSERTION DEVICE AND METHOD FOR ACCURATE AND REPEATABLE TARGET INSERTION

JEFFERSON SCIENCE ASSOCIA...

1. An assembly for inserting and positioning an insertion target comprising:
a pneumatic or electric actuator having an output shaft;
an alignment assembly; said alignment assembly comprising:
an alignment disk having at least three apertures therein;
a bellows portion; an alignment guide having three v-shaped grooves; and, three alignment pins, each of said alignment pins
removably secured to said alignment disk and axially aligned with said respective v-shaped grooves;

a flexible coupling;
an insertion element having a first end and a second end; said first end being mechanically coupled to said output shaft via
said flexible coupling; said insertion element being secured to said alignment assembly at a location proximate to the first
end of said insertion element; and,

an insertion target assembly affixed to said second end of said insertion element, whereby during actuation the linear movement
of said output shaft is arrested by registration of the three alignment pins in said v-shaped grooves thereby positioning
said insertion target at a desired location.

US Pat. No. 9,463,433

NANO-MATERIALS FOR ADHESIVE-FREE ADSORBERS FOR BAKABLE EXTREME HIGH VACUUM CRYOPUMP SURFACES

JEFFERSON SCIENCE ASSOCIA...

1. A method of pumping a vacuum system to an extreme high vacuum (XHV), comprising:
a) providing a closed cycle helium refrigeration cryopump with a removable coldhead and a cryosorption panel therein;
b) securing an adhesive-free nano-material to said cryosorption panel to form a cryosorption surface within said cryopump;
c) fully baking the cryosorption panel at a temperature greater than 100° C. to reduce the hydrogen outgassing load and eliminate
water vapor from the cryopump; and

d) operating the cryopump until a pressure below 10?12 Torr is achieved in the vacuum system.

US Pat. No. 9,290,838

ANTI-DIFFUSION METAL COATED O-RINGS

JEFFERSON SCIENCE ASSOCIA...

1. A gas diffusion inhibiting dual seal o-ring for sealing a joint between a fluid under pressure and a vacuum, comprising:
a solid elastomeric body including an interior surface and an exterior surface;
at least one of said interior surface and said exterior surface of said elastomeric body is uncoated to form a primary seal
portion;

the side opposing said uncoated side of said elastomeric body coated with a malleable metal film coating of a constant thickness
forming a secondary seal portion;

said metal coating being compatibly deformable with said solid elastomeric body, whereby said primary seal portion forms a
primary seal in said joint and said metal coating on said secondary seal portion establishes a secondary seal in said joint;
and

said metal coating of said secondary seal portion preventing gas diffusion through said dual seal o-ring.

US Pat. No. 9,184,022

METHOD AND APPARATUS FOR CONTROL OF COHERENT SYNCHROTRON RADIATION EFFECTS DURING RECIRCULATION WITH BUNCH COMPRESSION

JEFFERSON SCIENCE ASSOCIA...

1. A method for controlling coherent synchrotron radiation (CSR) effects on a charged particle beam during recirculation with
bunch compression comprising:
providing a plurality of focusing and defocusing (FODO) cells arrayed in a recirculating arc including initial FODO cells
and final FODO cells;

providing a larger bending angle in said initial FODO cells to enhance the impact of CSR early on in the beam line while the
bunch is long; and

providing a smaller bending angle in the final FODO cells to reduce the effect of CSR while the bunch is short.

US Pat. No. 9,123,611

METHOD FOR PASSIVELY COMPENSATING FOR TEMPERATURE COEFFICIENT OF GAIN IN SILICON PHOTOMULTIPLIERS AND SIMILAR DEVICES

Jefferson Science Associa...

1. A method for passively compensating for temperature coefficient of gain in a system including a plurality of multiple pixel
avalanche photo detector devices, including the steps of:
(a) providing a voltage supply, a linearized thermistor consisting of a thermistor in parallel with a linearizing resistor,
a divider resistor, and a source resistor having a source resistance (RS);

(b) determining the Temperature Coefficient of Gain (TCG) for the devices;
(c) determining the Temperature Coefficient of Voltage (TCV) that will compensate the TCG;
(d) selecting a supply voltage (VSupply) greater than the highest operating voltage (Vop) for said plurality of devices;

(e) selecting a thermistor including a characteristic thermistor reference temperature (T0), thermistor resistance at the reference temperature (RT0), and thermistor beta characteristic parameter (B0);

(f) selecting a linearizing thermistor (RLin) that minimizes nonlinearity of the parallel combination at the operating temperature;

(g) determining the current (I0) through linearized thermistor that will result in the desired temperature coefficient of voltage (TCV) at the temperature
of interest T wherein I0 is a solution of the relationship

where
and T=Temperature for circuit operation (K);
(h) determining from the thermistor current (I0) the value of the resistance of divider resistor (R2) that will result in the correct operating voltage (Vop) at the temperature of interest wherein R2 is a solution of the relationship


(i) determining the value for the source resistance (RS) that will result in the sum of voltage drops across RS, the linearized thermistor and R2 to equal the supply voltage VSupply wherein RS

(j) selecting values for R2 and for RS; and

(k) repeating steps (h) through (j) for each different device VOP.

US Pat. No. 9,408,289

METHOD FOR MAXIMIZING THE BRIGHTNESS OF THE BUNCHES IN A PARTICLE INJECTOR BY CONVERTING A HIGHLY SPACE-CHARGED BEAM TO A RELATIVISTIC AND EMITTANCE-DOMINATED BEAM

JEFFERSON SCIENCE ASSOCIA...

1. A method for maximizing the brightness of a bunch of charged particles in a particle injector, comprising:
a. providing an input beam;
b. determining the bunch charge and the initial kinetic energy of the highly space-charge dominated input beam;
c. applying the bunch charge and initial kinetic energy properties of the highly space-charge dominated input beam to determine
a number of accelerator cavities required to accelerate the bunches to relativistic speed;

d. providing the required number of accelerator cavities;
e. setting the gradient of the radio frequency (RF) cavities; and
f. operating the accelerator cavities at a phase between ?90 and zero degrees of the sinusoid of phase to simultaneously accelerate
and bunch the charged particles until the beam is relativistic and emittance-dominated.

US Pat. No. 9,209,587

ABSORBER FOR TERAHERTZ RADIATION MANAGEMENT

JEFFERSON SCIENCE ASSOCIA...

1. A method for minimizing the power degradation of a terahertz (THz) beam in a free electron laser (FEL) having a beam tube,
comprising:
a. providing a THz absorber ring having an upstream side, a downstream side, and a plurality of wedges spaced radially around
the upstream side of the absorber ring;

b. placing said THz absorber ring within said beam tube with the upstream side of said THz absorber ring facing the oncoming
THz beam; and

c. absorbing irregular THz radiation to minimize the power degradation of the THz beam.

US Pat. No. 9,756,715

FLANGE JOINT SYSTEM FOR SRF CAVITIES UTILIZING HIGH FORCE SPRING CLAMPS FOR LOW PARTICLE GENERATION

JEFFERSON SCIENCE ASSOCIA...

1. A flange joint system comprising:
a spring clamp including a clamp body, arms extending from said body, and wings extending from said arms;
an opening device including a hydraulic piston and two pairs of stirrup arms pivotable around said hydraulic piston;
a bag forming an enclosure for particulates said bag sealing around said hydraulic piston and said stirrup arms;
a stirrup extending between each of said stirrup arms of said opening device; and
a rolling contact surface on each of said stirrups of said opening device.

US Pat. No. 9,325,145

METHOD FOR SEPARATING FEL OUTPUT BEAMS FROM LONG WAVELENGTH RADIATION

JEFFERSON SCIENCE ASSOCIA...

1. A method for improving the quality of the output of a free electron laser (FEL) having an optical wavelength and a bending
magnet deflecting electrons from the output laser beam, comprising:
a. providing a mirror with an aperture therein;
b. sizing the aperture to deflect emission longer than the wavelength of the FEL output;
c. inserting the mirror at an oblique angle downstream of the bending magnet but before any sensitive use of the FEL beam;
d. determining the output wavelength of the FEL radiation by solving the equation
where:?s is the output wavelength;?w is the wiggler wavelength;? is the relativistic parameter of the electrons=1+E/0.511 where E is the electrons' kinetic energy in units of mega-electron
volts;K is the wiggler strength parameter,
where e is the electron charge, B is the magnetic field strength of the wiggler, k0=2?/?w, m is the electron rest mass and c is the speed of light;
e. determining the radius of the optical mode of the FEL beam by solving the equation
where:?0 is the radius of the FEL optical mode in the wiggler; andz is the distance from the wiggler where the radius is to be determined; and
f. setting the radius of the aperture to greater than 3 times the FEL optical mode at the insertion point of the mirror.
US Pat. No. 9,217,744

METHOD AND APPARATUS TO IMAGE BIOLOGICAL INTERACTIONS IN PLANTS

JEFFERSON SCIENCE ASSOCIA...

1. A method of imaging the translocation of molecular compounds of interest in the root system and the rhizosphere of a plant,
comprising:
Providing a plant with a root or root system for study;
Providing a compound or molecule which will bind to a target;
Labeling said compound or molecule with a radioisotope;
Tagging the target with the labeled compound or molecule;
Removing excess labeled compound or molecule;
Providing a radioisotope imaging detector and imaging algorithms; and,
Imaging the emissions from the labeled compound or molecule within said
root or root system using said radioisotope imaging detector and imaging algorithms.

US Pat. No. 9,408,290

METHOD AND APPARATUS FOR RECIRCULATION WITH CONTROL OF SYNCHROTRON RADIATION

JEFFERSON SCIENCE ASSOCIA...

1. A method of controlling incoherent synchrotron radiation (ISR) and coherent synchrotron radiation (CSR) in a high brightness
electron beam comprising:
a. providing a super-periodic second order achromat line comprising a plurality of superperiods, wherein each superperiod
in said plurality of superperiods includes a plurality of dipoles and quadrupoles and each superperiod is linearly achromatic
and isochronous, the electron beam including a bend angle and a bend radius at each of said dipoles;

b. providing a tune for each superperiod, wherein each of the tunes provides the frequency of the transverse oscillation for
the corresponding superperiod;

c. setting the tune for each superperiod to a rational fraction of an integer;
d. setting small individual bend angles to reduce driving terms due to dispersion and dispersive angle; and
e. setting the bend radius of the electron beam at each of said dipoles to a value that will suppress ISR and will limit the
radial dependence of CSR.

US Pat. No. 9,125,287

SEPARATED-ORBIT BISECTED ENERGY-RECOVERED LINEAR ACCELERATOR

Jefferson Science Associa...

1. A method of controlling the recirculation of an energy recovery linear accelerator (ERL) accelerated by radio frequency
(RF) energy having an RF wavelength comprising:
a. providing an injector for producing a charged particle beam, a first linac, and a second linac having an input end and
an output end;

b. providing a plurality of up arcs between the first linac and second linac including a first up arc, a second up arc, and
a third up arc;

c. providing a plurality of downgoing arcs between the first linac and second linac including a first downgoing arc, a second
downgoing arc, and a third downgoing arc;

d. providing a full energy arc between the output end and the input end of the second linac;
e. operating the ERL wherein the energy beam is accelerated by each of the up arcs and afterwards returned to the second linac
by the full energy arc;

f. decelerating the energy beam by recirculating it sequentially through each of the downgoing arcs, the first linac, and
the second linac; and

g. delivering the low energy final beam to the end of the first linac to be extracted to a beam dump.

US Pat. No. 9,839,114

LINEAR ACCELERATOR ACCELERATING MODULE TO SUPPRESS BACK-ACCELERATION OF FIELD-EMITTED PARTICLES

JEFFERSON SCIENCE ASSOCIA...

1. A method for suppressing prevalent field emission in the upstream direction in a superconducting radio frequency (RF) accelerator,
comprising:
providing an accelerator structure including a plurality of independently phased multi-cell cavities in a string;
providing an intermediate beam tube having a beam tube length between each of the multi-cell cavities wherein the beam tube
length of the intermediate beam tube between the multi-cell cavities is determined according to the following equation


wherein Ltube is the beam tube length between cavities, Lcell is the length of the cells in each multi-cell cavity, ? is the particle velocity relative to the speed of light, ? is the
wavelength of the accelerating mode, and N is an integer number;

injecting a stream of electrons into said accelerator structure; and
applying an accelerating field of at least 3 MV/m to accelerate the electrons to a relativistic speed.

US Pat. No. 9,618,630

RADIATION DETECTOR BASED ON A MATRIX OF CROSSED WAVELENGTH-SHIFTING FIBERS

JEFFERSON SCIENCE ASSOCIA...

1. A radiation detection system comprising:
at least two orthogonal grid arrays of scintillating fibers comprising,
a first grid array of scintillating fibers oriented in a first plane secured to one another along the long axis of each said
fiber; said fibers having first and second ends and at least one of said first and second ends being coupled to a light detector;

a second grid array of scintillating fibers oriented in a second plane secured to one another along the long axis of each
said fiber; said fibers having first and second ends and at least one of said first and second ends being coupled to a light
detector; and,

an electron dense material juxtaposed between the scintillating fibers in the first grid array and between the scintillating
fibers in the second grid array.

US Pat. No. 9,589,757

NANO-PATTERNED SUPERCONDUCTING SURFACE FOR HIGH QUANTUM EFFICIENCY CATHODE

JEFFERSON SCIENCE ASSOCIA...

1. A method for providing a superconducting surface on a laser-driven cathode in order to increase the effective quantum efficiency,
comprising the steps of:
providing a plug constructed of niobium;
polishing a first side of the niobium plug to create a polished surface;
creating an array of nano-holes in the polished surface to form a nano-patterned surface; and
setting the width, depth, and spacing of the nano-holes according to the wavelength and angle of incidence of the incident
laser to increase the absorption of the laser light.

US Pat. No. 9,440,882

LIGHTWEIGHT CONCRETE WITH ENHANCED NEUTRON SHIELDING

JEFFERSON SCIENCE ASSOCIA...

1. A lightweight concrete with neutron shielding, said concrete comprising:
a) portland cement;
b) fly ash;
c) essentially 51% polyethylene terephthalate by weight relative to the weight of the cement component of the mixture;
d) coarse aggregate;
e) sand; and
f) water.

US Pat. No. 9,784,852

SURGICAL GUIDANCE SYSTEM USING HAND-HELD PROBE WITH ACCOMPANYING POSITRON COINCIDENCE DETECTOR

JEFFERSON SCIENCE ASSOCIA...

1. A surgical guidance system for detecting areas of increased uptake of biomarker within a region of interest (ROI) on a
patient treated with a beta-emitting bio-marker comprising:
a) a hand-held detection probe including
1) a first scintillator layer for converting incident beta radiation to light, said first scintillator layer producing a first
pulse shape;

2) a second scintillator layer for converting incident beta radiation to light, said second scintillator layer in optical
contact with said first scintillator layer and producing a second pulse shape;

3) a gamma scintillator layer in optical contact with said second scintillator layer to detect one of a pair of 511 keV annihilation
gamma rays from said ROI and producing a third pulse shape; and

4) a photodetector in optical contact with said gamma scintillator layer;
b) a coincidence detector for detecting gamma rays from the ROI, said coincidence detector including a second gamma scintillator
layer to detect the other of the pair of 511 keV annihilation gamma rays from said ROI and producing a fourth pulse shape;

c) a hardware processor for separating the pulse shapes on the basis of their different time decay and amplitude characteristics;
and

d) a coincidence imager for displaying a formed coincident image of the ROI from the pulse shapes of the hand-held detection
probe and the coincidence detector, said surgical guidance system producing an intensified image at said areas of increased
uptake of biomarker.

US Pat. No. 9,674,026

BEAM POSITION MONITOR FOR ENERGY RECOVERED LINAC BEAMS

JEFFERSON SCIENCE ASSOCIA...

1. A method for measuring the relative amplitude of the signals from a position sensitive beam pickup in an energy recovered
linear accelerator, comprising:
providing an in phase and quadrature (I/O) beam position monitor receiver including I-channels and Q-channels;
introducing an accelerated beam into the energy recovered linear accelerator;
selecting an RF reference;
adjusting the relative phase between the RF reference and the I/O receiver until the Q-channel has zero amplitude to synchronize
the Q-channel of the position monitor for use;

applying an accelerated beam and a decelerated beam to the system wherein the phase of the decelerated beam, relative to that
of the electromagnetic fields within the accelerating cavity, is that of the accelerating beam plus or minus approximately
180°;

setting the RF frequency (m?0) of the beam position monitor receiver to a harmonic of the RF cavity frequency, where m is a whole integer 1, 2, 3, 4 .
. . and ?0=2?f0, where f0 is the bunch repetition frequency, with the additional condition that m?0=k?c, where k is 0.5, 1.5, 2.5, . . . , ?c=2?fc, and fc is the energy recovered linear accelerator cavity frequency;

reading the position information for the accelerated beam from the I-channels;
reading the position information for the decelerated beam from the Q-channels;
determining a cavity phase difference between the accelerated beam and the decelerated beam to determine if the energy recovered
linear accelerator is at maximum energy recovery; and

introducing a correction based on the accelerated/decelerated beam cavity phase difference from 180° in order to improve the
accuracy of the beam position calculation.

US Pat. No. 9,362,802

SYSTEM FOR INSTRUMENTING AND MANIPULATING APPARATUSES IN HIGH VOLTAGE

JEFFERSON SCIENCE ASSOCIA...

1. An apparatus for operating an electrical device in a high-voltage environment comprising:
a source of dielectric gas;
a pneumatic motor;
a pump in gas communication with said source of dielectric gas and said pneumatic motor;
a motor-generator set; said motor-generator being mechanically coupled to said pneumatic motor;
an energy storage device in electrical communication with said motor-generator set, wherein the motor-generator is adapted
to supply electrical power to said energy storage device and an electrical device operating in said high-voltage environment
is adapted to receive electrical power from the energy storage device.

US Pat. No. 9,711,251

APPARATUS AND METHOD FOR VARIABLE ANGLE SLANT HOLE COLLIMATOR

JEFFERSON SCIENCE ASSOCIA...

1. A variable angle slant hole collimator, comprising:
a frame including opposing sides, opposing ends, and a front panel having an opening therein;
a plurality of substantially planar leaves stacked against said front panel in said frame, said stack including a top leaf
with a face;

an array of apertures arranged in an identical pattern in each of said leaves, said leaves capable of alignment in an initial
position wherein said apertures in said leaves are axially aligned with one another and at 90° with respect to the face of
the top leaf;

a means for positioning each of said leaves in said stack of said leaves in a controlled manner such that each leaf slides
at a predetermined rate with respect to the surrounding leaves in the stack; and

said means for positioning said stack includes a lead screw and two wedge blocks on each end of said frame and an actuator
for driving said lead screws.

US Pat. No. 9,871,337

FEL SYSTEM WITH HOMOGENEOUS AVERAGE OUTPUT

JEFFERSON SCIENCE ASSOCIA...

1. A method for varying the output of a free electron laser (FEL), comprising:
providing an energy recovered linac (ERL) including a linear accelerator (linac) supplied with radio frequency (RF) energy,
the RF energy including an RF waveform having a crest;

providing a transport system for supplying a sequence of electron bunch trains to the FEL, said bunch trains including a bunch
length;

injecting into the linac a sequence of individual bunch trains of electrons at different phases relative to the crest of the
linac RF waveform;

accelerating the bunch trains in the ERL to full energy to produce distinct and independently controlled phase-energy correlations
on each bunch train with earlier trains more strongly chirped and the later trains less chirped; and

delivering the sequence of accelerated bunch trains to the FEL.

US Pat. No. 9,847,215

METHOD FOR DETECTING AND DISTINGUISHING BETWEEN SPECIFIC TYPES OF ENVIRONMENTAL RADIATION USING A HIGH PRESSURE IONIZATION CHAMBER WITH PULSE-MODE READOUT

JEFFERSON SCIENCE ASSOCIA...

1. A method for detecting environmental radiation, comprising:
a. providing a high pressure ionization chamber (HPIC) including a shell having an inner volume and an anode within the inner
volume;

b. adding inert gas to the inner volume of the HPIC;
c. adding boron trifluoride (BF3) gas to the inner volume of the HPIC at a concentration to comprise 5 to 15% BF3 of the gas mixture to render the HPIC sensitive to Boron-10 isotope neutron capture reactions;

d. applying a negative bias voltage to the shell to create a cathode;
e. connecting an electrical circuit to the anode;
f. connecting a pulse-mode readout device to the electrical circuit; and
g. detecting various types of environmental radiation using the output of the pulse-mode readout device;
h. measuring the signal pulse height and signal pulse width of the output of the pulse-mode readout device; and
i. comparing the signal pulse width of the output of the pulse-mode readout device with characteristic pulse width parameters
to distinguish between gamma rays (?), neutrons (n), and cosmic muons (?).

US Pat. No. 9,590,384

ABSORBER FOR WAKEFIELD INTERFERENCE MANAGEMENT AT THE ENTRANCE OF THE WIGGLER OF A FREE ELECTRON LASER

JEFFERSON SCIENCE ASSOCIA...

1. A method for managing reflected wake field energy in the form of broad band microwave and TeraHertz (THz) radiation in
a free electron laser (FEL) having a wiggler producing laser light and containing a cookie-cutter for shaping the wake field
wave to the wiggler chamber aperture, comprising:
a nose portion on the upstream end of the cookie-cutter, the nose portion including two flat surfaces, a planar face on the
cookie-cutter perpendicular to each of the flat surfaces, and a slot in the nose portion in axial alignment with the wiggler
chamber aperture; and

covering the planar faces of the cookie-cutter with a broadband microwave and TeraHertz (THz) radiation absorber wherein the
absorber is a non-porous pyrolytic grade of graphite with small grain size.

US Pat. No. 10,027,340

METHOD AND APPARATUS TO DIGITIZE PULSE SHAPES FROM RADIATION DETECTORS

JEFFERSON SCIENCE ASSOCIA...

1. An expandable component system for digitizing pulse shapes comprising:a plurality of collection and processing units each including a field programmable gate array;
a coincidence matrix processor comprising a field programmable gate array; said coincidence matrix processor in communication with said plurality of collection and processing units via a high speed multi-lane data communications channel;
a data acquisition module;
a Gigabit Ethernet communication conduit between said coincidence matrix processor and said data acquisition module;
an algorithm to facilitate operation of the expandable component system residing on said coincidence matrix processor; and
an algorithm defining a serial communication between said coincidence matrix processor and said data acquisition module,
whereby said coincidence matrix processor is capable of identifying valid coincidences within data collected from said plurality of collection and processing units via the digitization of pulse charge shapes.

US Pat. No. 10,068,968

BXCYNZ NANOTUBE FORMATION VIA THE PRESSURIZED VAPOR/CONDENSER METHOD

JEFFERSON SCIENCE ASSOCIA...

1. A continuous and catalyst free process for producing high-aspect ratio, high-crystallinity boron carbon nitrogen nanotube filaments of the general formula BxCyNz wherein the process comprises: generating a stream of boron vapor via the thermal excitation of a boron-containing target in a chamber containing a carbon source and nitrogen at a pressure which is about 2-to about 2000 atmospheres and at a temperature of about 3200 to 4000 C; providing a filament nucleation site in the direction of flow of the stream of boron vapor; forming the boron carbon nitrogen nanotube filaments at the filament nucleation site at a rate of at least ten cm/second; and vacuuming the boron carbon nitrogen nanotube filaments from the filament nucleation site.

US Pat. No. 10,236,090

SYNTHESIZING RADIOISOTOPES USING AN ENERGY RECOVERY LINAC

JEFFERSON SCIENCE ASSOCIA...

1. A method for the production of radioisotopes utilizing an energy recovery linear accelerator, the method comprising:providing an energy recovery linear accelerator apparatus having a beam path; said
apparatus including an electron beam source and a radiator;
providing an isotope production target material which is spatially separated from said radiator at a distance of one meter such that said target material is not within the beam path of said energy recovery linear accelerator, wherein the dimensions of said target material have no effect on the amount of energy recovered from said electron beam;
generating a continuous wave electron beam;
accelerating the electron beam in one or more SRF cavities;
striking said radiator with said beam;
generating Bremsstrahlung radiation as a result of said striking said radiator;
bombarding said target material with said Bremsstrahlung radiation;
manipulating and decelerating said electron beam;
recovering at least ninety percent of the energy from said electron beam; and
absorbing the electron beam at a beam dump.

US Pat. No. 10,367,326

METHOD FOR ENERGY DITHER OF A PARTICLE BEAM

JEFFERSON SCIENCE ASSOCIA...

1. In a free electron laser (FEL) system including an input particle beam, a method for varying the output wavelength of the FEL output beam by changing the energy of the FEL input particle beam, comprising:a. providing a primary accelerator cavity for supplying the input particle beam and a primary beam transport for transporting the input particle beam, wherein the input particle beam has energy with a nominal operating point and a primary accelerator bunch frequency;
b. providing a wiggler to periodically deflect the beam of particles inside the input particle beam;
c. inserting one or more secondary radiofrequency accelerator cavities between the primary beam transport and the wiggler;
d. setting the frequency of each secondary radiofrequency accelerator cavity to a harmonic or sub-harmonic of the primary accelerator bunch frequency; and
e. dithering the particle beam energy of the FEL input particle beam by operating the secondary radiofrequency accelerator cavities at the harmonic or sub-harmonic of the primary accelerator bunch frequency, said dithering varying the particle beam energy of the FEL input particle beam about the nominal operating point and varying the wavelength of the FEL output beam.

US Pat. No. 10,281,600

NEUTRON DETECTOR AND DOSE RATE METER USING BERYLLIUM-LOADED MATERIALS

JEFFERSON SCIENCE ASSOCIA...

1. A neutron dose rate meter comprising:a neutron detector;
an inner moderator layer surrounding said neutron detector;
a medium-Z inner layer surrounding said inner moderator layer;
a beryllium-loaded layer surrounding said medium-Z layer; and
an outer moderator layer surrounding said beryllium-loaded layer.

US Pat. No. 10,485,090

HIGH PERFORMANCE SRF ACCELERATOR STRUCTURE AND METHOD

JEFFERSON SCIENCE ASSOCIA...

1. A chemical rinse-free method of forming a superconducting radio frequency (SRF) accelerator cavity, comprising:(a) providing a first and second half-cell of an accelerator cavity having an inner surface and an equator;
(b) adjusting the temperature of the first and second half-cell to 100 K or less;
(c) removing a thin layer of the inner surface of the first and second half-cell while holding the temperature of the first and second half-cell to 100K or less and maintaining the first and second half-cell in a first inert atmosphere;
(d) measuring the roughness of the inner surface of the first and second half-cell with a surface profilimeter;
(e) repeating steps (c) through (d) until the inner surface of the first and second half-cell is less than 2 nm root mean square (RMS) roughness over a 1 mm2 area; and
(f) welding the two half-cells together in a second inert atmosphere to form a superconducting radio frequency accelerator cavity.

US Pat. No. 10,317,539

RADIATION MONITOR BASED ON WAVELENGTH-DEPENDENT OPTICAL ABSORPTION IN FUSED SILICA OPTICAL FIBERS

JEFFERSON SCIENCE ASSOCIA...

1. A method for remotely determining radiation dose caused by neutrons and high energy photons comprising:a photon source, a doped silica optical fiber, and a photon detector;
transmitting light from the photon source through the optical fiber to the photon detector;
measuring the intensity of the photons on the photon detector;
determining the optical attenuation changes to the optical fiber induced by the radiation as a function of time and temperature;
determining the portion of the optical attenuation changes that are delivered to the doped silica optical fiber by the neutrons;
determining the portion of the optical attenuation changes that are delivered to the doped silica optical fiber by the high energy photons;
converting the optical attenuation changes caused by the separate neutron and high energy photon irradiations to a separate dose delivered by each of the neutron and high energy photon components;
providing a mathematical algorithm for calibrating the measurement of the radiation dose; and
calibrating the determination of the optical absorption changes based on annealing as a function of time and temperature.

US Pat. No. 10,483,712

METHOD FOR ENERGY DITHER OF A PARTICLE BEAM

JEFFERSON SCIENCE ASSOCIA...

1. A method for varying the output wavelength of a free electron laser by changing the energy of the input particle beam, comprising:a. providing an accelerator producing a charged particle beam including bunches of charged particles having a primary bunch repetition frequency at a primary accelerator cavity frequency or a subharmonic thereof;
b. providing a wiggler to periodically laterally deflect the charged particle beam;
c. adding one or more secondary radiofrequency accelerator cavities after the accelerator and before the wiggler;
d. setting the frequency of each added secondary radiofrequency accelerating cavities to a non-integer harmonic or subharmonic of the primary bunch repetition frequency; and
e. adjusting the accelerating voltage of each of the secondary cavities to provide a desired variation in the energy of the bunches which make up the charged particle beam, whereby the variation in the output wavelength of the free electron laser includes a distribution equal to a multiple of the energy distribution of the charged input particle beam.