Modeling and Analysis of the 300 ft Drop Tower Incline Trolley
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Hays, Rachel Maria↗
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High Precision Magnetic Field Measurement for the Muon g-2 Experiment
The Muon g-2 experiment at Fermilab will measure the anomalous magnetic moment of the muon, aµ with a precision of 140 ppb, a four-fold improvement over the former BNL E821 result. If the current discrepancy of about 3.5σ between the Standard Model value for aµ and the former experiments was real, then the new experiment would verify the deviation with >7σ significance. The experiment uses muons with the magic momentum of 3.09 GeV/c stored in a very homogeneous magnetic field of a 45 m long storage ring. The determination of aµ requires the precise knowledge of both the anomalous muon spin precession, ωa, and the magnetic field, ωp, expressed in terms of the free-proton Larmor frequency. The field measurement uses the high precision tool of pulsed Nuclear Magnetic Resonance (pNMR) and requires cross-calibrating a set of probes: a very accurate NMR probe calibrates the 17 probes on the in-vacuum field mapping system (the so-called trolley). This trolley in turn is used to map the field over the full azimuth of the storage ring. The trolley measurement also provides the calibration of the 378 fixed probes around the ring that constantly monitor the field drift. This article presents the summary of the entire field measurement system needed to determine ωp. This work was supported in part by the US DOE, Fermilab and US DOE OHEP under contract No. KA2201020.
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS↗
Magnetic In-Vacuum Field Mapping System for the Muon g-2 Experiment
The Muon g-2 experiment at Fermilab will measure the anomalous magnetic moment of the muon, $a^{}_\mu$ with a precision of 140ppb, a four-fold improvement over the former BNL E821 result. If the current discrepancy of about 3.5$\sigma$ between the Standard Model value for $a^{}_\mu$ and the former experiments was real, then the new experiment would verify the deviation with >7$\sigma$ significance. The experiment uses muons with the magic momentum of 3.09GeV/c stored in a very homogeneous magnetic field of a 45m long storage ring. The determination of $a^{}_\mu$ requires the precise knowledge of both the muon spin precession, $\omega^{}_a$, and the magnetic field, $\omega^{}_p$, expressed in terms of the free-proton Larmor frequency. The field measurement uses the high precision tool of pulsed proton Nuclear Magnetic Resonance and requires cross-calibrating a set of probes: a very accurate NMR probe calibrates the 17 probes on the in-vacuum field mapping system (the so-called trolley). This trolley in turn is used to map the field over the full azimuth of the storage ring. The trolley measurement also provides the calibration of the 378 fixed probes around the ring that constantly monitor the field drift. The trolley is particularly important as it measures the relevant field that is seen by the stored muons and this article presents the details of this field mapping system. This work was supported in part by the US DOE, Fermilab and US DOE OHEP under contract No. KA2201020.
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND ↗
Magnetic Field Analysis for Fermilab Muon $g-2$
The Muon g-2 experiment E989 at Fermilab measures the anomalous magnetic moment of the muon $a_\mu$ with improved precision compared to the Brookhaven (E821) experiments. The Brookhaven results are in tension with the Standard Model by more than $3\sigma$. The determination of $a_\mu$ requires the measurement of both the muon anomaly frequency, $\omega_a$, and the magnetic field, $\mathbf{B}$, that confines muons in a storage ring. The field is monitored by a set of coordinated nuclear magnetic resonance (NMR) measurements. NMR probes at fixed locations above and below the storage region constantly monitor the field. An in-vacuum trolley equipped with 17 NMR probes maps the muon storage region, and a special water-based NMR probe provides the calibration for the trolley probes. This presentation focuses on the determination of the time-dependent field maps from combining the fixed probe measurements and the trolley maps. The field maps are combined with the muon distribution to derive the average field observed by the muons during the measurement. These proceedings will cover the analysis from the first data run.
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND ↗
Lifting and removal device for additive manufacturing system
An attachment device for lifting and removing build plates and additive manufactured parts built on the build plates from an additive manufacturing machine. The attachment device may fit onto a lift trolley to cooperatively engage with and lift the build plate upward off of a surface of the additive manufacturing machine. The attachment device may include a support bar, two lifting arms, and a mounting bracket. The support bar may have a slider track formed therethrough, so that the lifting arms can be adjusted to correspond with a width of the build plate. The lifting arms may each having a channel formed along a length thereof and an interfacing portion slidably located within the slider track. The channels may be sized and shaped to engage with a bottom surface and/or opposing edges of the build plates. The mounting bracket may attach to a lifting device of the lift trolley.
Barr, Cary B.↗
Prompt Gamma Imaging for In Vivo Range Verification of Pencil Beam Scanning Proton Therapy
Purpose: To report the first clinical results and value assessment of prompt gamma imaging for in vivo proton range verification in pencil beam scanning mode. Methods and Materials: A stand-alone, trolley-mounted, prototype prompt gamma camera utilizing a knife-edge slit collimator design was used to record the prompt gamma signal emitted along the proton tracks during delivery of proton therapy for a brain cancer patient. The recorded prompt gamma depth detection profiles of individual pencil beam spots were compared with the expected profiles simulated from the treatment plan. Results: In 6 treatment fractions recorded over 3 weeks, the mean (± standard deviation) range shifts aggregated over all spots in 9 energy layers were −0.8 ± 1.3 mm for the lateral field, 1.7 ± 0.7 mm for the right-superior-oblique field, and −0.4 ± 0.9 mm for the vertex field. Conclusions: This study demonstrates the feasibility and illustrates the distinctive benefits of prompt gamma imaging in pencil beam scanning treatment mode. Accuracy in range verification was found in this first clinical case to be better than the range uncertainty margin applied in the treatment plan. These first results lay the foundation for additional work toward tighter integration of the system for in vivo proton range verification and quantification of range uncertainties.
62 RADIOLOGY AND NUCLEAR MEDICINE↗
The Muon g-2 Experiment overview and status as of June 2016
The Muon g-2 Experiment at Fermilab will measure the anomalous magnetic moment of the muon to a precision of 140 parts per billion, which is a factor of four improvement over the previous E821 measurement at Brookhaven. The experiment will also extend the search for the electric dipole moment (EDM) of the muon by approximately two orders of magnitude, with a sensitivity down to 10 -21 e.cm. Both of these measurements are made by combining a precise measurement of the 1.45T storage ring magnetic field with an analysis of the modulation of the decay rate of higher-energy positrons (from anti-muons), recorded by 24 calorimeters and 3 straw tracking detectors. Furthermore, the recent progress in the alignment of the electrostatic quadrapole plates and the trolley rails inside the vacuum chambers, and in establishing the uniform storage ring magnetic field will be described.
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND ↗
Magnetic Field Status of the Muon g-2 Experiment
• Magnetic field requirements • Magnetic field mapping and monitoring - Trolley - Fixed Probes • Magnetic field shimming • NMR probe calibration
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS↗
Kiwi-TNT Simulation Model [Slides]
The Kiwi-TNT Test (Toonerville Trolley) was performed on January 12, 1965. LANL has the objective: "LANL will develop a defensible methodology for establishing the maximum number of fissions for postulated inadvertent criticality events. The methodology may include several methods, such as hand calculations, sophisticated modeling, and the use of historical data.” The historic test, Kiwi TNT, posed a starting point for predictive simulations to determine the number of fissions and excursion understanding. This presentation gives results of that effort.
73 NUCLEAR PHYSICS AND RADIATION PHYSICS↗
NRIC DOME Crane Trade Study and Recommendation
The National Reactor Innovation Center (NRIC) is a national program that was established as part of the Nuclear Energy Innovation Capabilities Act (NEICA). NRIC’s mission is to accelerate the demonstration and deployment of advanced nuclear energy through its mission to inspire stakeholders and the public, empower innovators, and deliver successful outcomes through efficient coordination of partners and resources. NRIC is designed to bridge the gap between research, development, and the marketplace to help convert some of the nation’s most promising advanced nuclear reactors into commercial applications. The NRIC Demonstration of Microreactor Experiments (DOME) facility, formerly known as Experimental Breeder Reactor II (EBR II), located at the Materials and Fuels Complex (MFC) at the Idaho National Laboratory (INL) is intended to allow industrial and other partners the opportunity to test Advanced Microreactors up to 20MW thermal power. The 75-ton capacity polar crane located in the EBR II facility was rendered inoperable to support planned facility demolition in 2015; small holes were flame cut in the girders; hoists and cables were removed; oil was drained from gear boxes; trolley drive, and then filled with absorbent; and the electrical and control umbilical’s were disconnected, removed and disposed. Subsequently, the decision was made to convert the EBR II facility into the DOME test bed.
21 - SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLAN↗
Designing a User Interface for Real-Time Magnetometer Data Acquisition
The Matter-wave Atomic Gradiometer Interferometric Sensor (MAGIS-100) is a next-generation quantum sensor designed to search for ultralight dark matter and explore new frontiers in quantum mechanics. Due to the experiment s sensitivity to magnetic interference, a magnetometer trolley system was developed to scan magnetic fields along a vacuum tube. Interacting with the system required command-line inputs, creating usability challenges. To improve accessibility and streamline data acquisition, I developed a graphical user interface (GUI) using Python and the customtkinter library. The GUI supports real-time data display, state/mode switching, command execution, and CSV file management. I collaborated with another intern to integrate data visualization features into the GUI, allowing users to generate 3D plots of post-acquisition magnetic field data. In the future, I aim to fix the real-time plotting feature as it results in an unresponsive GUI.
Mendez, Milagros [DuPage Coll.]↗
County Connection Battery Electric Bus Demonstration: Preliminary Project Results
The U.S. Federal Transit Administration (FTA) funds a variety of research projects that support the commercialization of zero-emission bus technology. To evaluate projects funded through these programs, FTA has enlisted the help of the National Renewable Energy Laboratory (NREL) to conduct third-party evaluations of the technologies deployed under the FTA programs. NREL works with the selected agencies to evaluate the performance of the zero-emission buses compared to baseline conventional buses in similar service. The evaluation effort will advance the knowledge base of zero-emission technologies in transit bus applications and provide 'lessons learned' to aid other fleets in incrementally introducing next generation zero-emission buses into their operations. This report provides preliminary performance evaluation results from a demonstration of four all-electric trolley-replica buses and two electric vehicle charging stations at County Connection in the San Francisco Bay Area. NREL developed this preliminary results report to quickly disseminate evaluation results to stakeholders. Detailed evaluation results will be published in future reports.
25 ENERGY STORAGE↗
Apparatus for deformation of solid sections
An equal channel angular extrusion tool comprising a punch assembly, a die set assembly, a base assembly, and a bottom slider assembly. The punch assembly comprises a punch, a punch nose, and a punch trolley. The die set assembly comprises an inlet channel and a removable core. The base assembly comprises a lifting mechanism which further comprises a die lift cylinder and a hold down ram. The bottom slider assembly comprises an ejection ram. The tool also includes a billet. The billet may be disposed in the bottom slider assembly. Severe plastic deformation is applied to the billet in the bottom slider assembly.
Barber, Robert E.↗
Designing a User Interface for Real-Time Magnetometer Data Acquisition
The Matter-wave Atomic Gradiometer Interferometric Sensor (MAGIS-100) is a next-generation quantum sensor designed to search for ultralight dark matter and explore new frontiers in quantum mechanics. Due to the experiment’s sensitivity to magnetic interference, a magnetometer trolley system was developed to scan magnetic fields along a vacuum tube. Interacting with the system required command-line inputs, creating usability challenges. To improve accessibility and streamline data acquisition, I developed a graphical user interface (GUI) using Python and the customtkinter library. The GUI supports real-time data display, state/mode switching, command execution, and CSV file management. I collaborated with another intern to integrate data visualization features into the GUI, allowing users to generate 3D plots of post-acquisition magnetic field data. In the future, I aim to fix the real-time plotting feature as it results in an unresponsive GUI.
Mendez, Milagros [DuPage Coll.]↗
Monster truck FERMIAC
After World War II, Los Alamos was anxious for its own computer. While on a walk along the river during a picnic with their families, Enrico Fermi outlined to L.D.P. King a plan for an analog computer to simulate neutron transport. L.D.P. King built it with materials lying around the Omega Site in Los Alamos Canyon. They used the “FERMIAC” for a couple of years, and it was forgotten, until 1966, when Bengt Carlson found it in his office. The lab drew up some blueprints and it went out on loan to the Smithsonian. It is now on display at LANL’s Bradbury Science Museum. There still are several questions as to how the FERMIAC was used. The FERMIAC is too fragile to handle, so our plan in the summer of 2017 was to build a museum-quality replica, much like the Italians did last year. However, the summer student was leaving before it could be re-constructed. Thus, finding ourselves in a similar situation as Fermi and King, we developed our own one-speed neutron transporter fashioned out of the chassis of a toy monster truck. In conclusion, we describe our “Monster Truck FERMIAC” on an XY problem.
97 MATHEMATICS AND COMPUTING↗
Sandia Rocket Assisted Pull Down Impact Testing
Watch in slow motion the sequence of events for a rocket assisted cable pull down impact test at the Sandia Aerial Cable Facility.
33 ADVANCED PROPULSION SYSTEMS↗