Research topic selection will be requested after student selection is completed. Only qualified applicants will select their research topics from this list.
The Fermilab g-2 experiment is measuring anomalous magnetic moment of muon particle, which will take data from 2017. This study will try to fit simulated data of Fermilab g-2 experiment, to understand systematic error of the experiment. Students will learn basic concept of experimental data fitting (regression analysis) and experimental uncertainties. Data analysis tools such as ROOT, Matlab, or Octave will be used.
RF signal needs to be applied to a quad system for reducing systematic errors such as CBO and muon losses. The RF signal needs to be amplified using a power amplifier which requires a control board. Students will understand the principle of circuits and develop the control board. Using the control board, the power amplifier will be tested.
The Muon g-2/EDM experiment at J-PARC in Japan is a next generation experiment which is being developed, and targeting to operate in 2020. Since the experiment needs a software framework to take, reconstruct, and analyze the data, it has to be developed. In this project, students will participate in the development and testing of the software framework, including producing and analyzing sample data, and they can learn all the aspects of the particle physics experiment especially in the computing area.
To monitor the axion experiments in our center as well as CAST/CAPP, real-time data quality monitoring would find our possible mistakes during the run, and will save us time. This requires good understanding on the axion experiments, so the students who pick this up will learn all the aspects of the axion experiments as well as computer programming.
Axion searches in the ~ GeV range require tunable microwave cavities with power sensitivities at the 10-22 – 10-23 W level, immersed in strong magnetic fields. Two important cavity parameters, among others, need to be maximized in this type of experiment, namely the cavity quality factor (Q), and its geometry factor (C) in the given mode of cavity operation. Inserting a tuning mechanism in the cavity generally spoils both Q and C. Computer modeling is the best tool able to predict them and provide guidance to their optimization. The student will apply Comsol Multiphysics Software to the study of rectangular cavities suitable for axion searches in dipole magnets, and will possibly work in coordination with another student who will perform measurements related to Q and C in order to test predictions versus experimental results.
Axion searches in the ~ GeV range require tunable microwave cavities with power sensitivities at the 10-22 – 10-23 W level, immersed in strong magnetic fields. Two important cavity parameters, among others, need to be maximized in this type of experiments, namely the cavity quality factor (Q), and its geometry factor (C) in the given mode of cavity operation. Inserting a tuning mechanism in the cavity generally spoils both Q and C. The student will perform measurements related to these parameters, possibly working in coordination with another student who can model such cavities in order to test experimental results versus predictions. The measurements will be on rectangular cavities suitable for axion searches in dipole magnets.
In this program, the participants will learn about the basic principles and applications of radiation detectors. Gas Electron Multiplier (GEM) detectors will be used to be tested with radiation sources and cosmic rays. Students will also learn about electronics, computer programing and data analysis using CERN ROOT.
Construct your own radio (receiver) by applying RF receiver chain. Students will understand the principle of RF transceiver. The principle of radio transceiver similarily applies to the signal acquisition of cavity axion experiment.
Using data collected by toy CAPPuccino submarine axion detector, we are searching for axion dark matter, the axion-photon coupling down to O(10-8) GeV-1 over the axion mass range from 6 to 7 GHz.
ARIADNE is a new magnetometry experiment to search for axion-like spin-dependent interactions between nuclei at sub-millimeter ranges. The experiment involves a non-magnetic mass to source the axion field, and a dense ensemble of laser-polarized 3He nuclei to detect the axion field by NMR. The signal from an axion field can be resonantly enhanced by properly modulating the axion potential at the nuclear spin precession frequency. Students will be involved in the optimization of materials and geometry for the source mass. ANSYS simulation for motion/stress of the mass will be determined. A prototype mass compatible with the linear mechanism will be fabricated based on the simulation. Students will be actively involved in the installation of linear piezo scanner system for source mass and teste in room temperature.
Use educational Mr. SQUID from Star Cryoelectronics (https://starcryo.com/mr-squid/) for study: (1) Resistance vs. Temperature measurements of the YBCO SQUID, (2) Building an Analog Flux-Lock Loop, (3) Using a Flux-Lock Loop as a Sensitive Voltmeter (4) The AC Josephson Effect: Shapiro steps at 77K and determining h/e, and (5) Inductive measurement of the Superconducting Transition Temperature.
Students will make (1) wire chamber, or (2) gamma-ray counter, or study to measure (3) Plank constant, (4) cosmic muon, and (5) the speed of light. Students may learn to make their own PCB for signal processing.
This study will be composed of (1) Introduction to Microwave Cavities, (2) Mode Mapping a Microwave Cavity, (3) Automated Mode Mapping, (4) Simulate and Verify by Measurement Cavity Design. A team of various levels could take on any of these.
(1) Cavity study of cylindrical and toroidal geometry, (2) Cavity simulation with 3D EM Solver, (3) Antenna making for signal detection, and (4) Cavity resonance frequency measurement and comparison with simulation results.
A superconducting cavity is important in achieving high-Q resonance cavity. This research includes (1) Design of ultra-high vacuum chamber, (2) Construction of ultra-high vacuum chamber, and (3) Growth of SC film on metal substrate.
Exploring higher frequency regions in axion dark matter searches using microwave cavity detectors requires smaller cavities as the TM010 frequency scales inversely with the cavity radius. One of the intuitive ways to make a maximal use of a given magnet volume, and thereby to increase the experimental sensitivity, is to bundle multiple cavities together and combine their individual outputs ensuring phase-matching of the coherent axion signal. The research effort will focus on design and development of tuning mechanisms taking the phase-matching into account for various types of multiple-cavity system, based on simulation studies.
In a microwave axion experiment, the signal power from axion conversions should be detected as a small excess in the total measured noise power. Students will learn (1) electronics design on how to detect extremely feeble axion signal, (2) techniques to measure (or evaluate) noise temperatures of RF components, and (3) analyzing data collected through DAQ system.
A high Q-factor resonance cavity is used for detecting axion particles. Students will learn (1) EM design of microwave cavity using CST MWS, (2) Special high Q microwave cavities