S.V. Milton
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Performance envelope of laser wakefield accelerators Open
Laser wakefield accelerator experiments have made enormous progress over the past $\sim 20$ years, but their promise to revolutionize high-energy particle sources is only beginning to be realized. To make the next step toward engineering L…
Fighting with Firewalld: Architecting a Host-based Firewall Policy and the Challenges of Implementation Open
Host-based firewalling is an important part of a comprehensive security plan. This paper explores a robust solution that can be adapted and used at any institution, along with the challenges involved in its development. The solution implem…
FASTQ File Compression Benchmarking Using Lossless General Purpose Algorithms Open
FASTQ format is a text-based format for storing a biological sequence (usually nucleotide sequence) and its corresponding quality scores used for genome sequencing. While most text-based formats compress well using traditional methods such…
Temporal model for quasi-phase matching in high-order harmonic generation Open
We present a model for quasi-phase matching (QPM) in high-order harmonic generation (HHG). Using a one-dimensional description, we analyze the time-dependent, ultrafast wave-vector balance to calculate the on-axis harmonic output versus ti…
View article: Resonant Frequency Control for the PIP-II Injector Test RFQ: Control Framework and Initial Results
Resonant Frequency Control for the PIP-II Injector Test RFQ: Control Framework and Initial Results Open
For the PIP-II Injector Test (PI-Test) at Fermilab, a four-vane radio frequency quadrupole (RFQ) is designed to accelerate a 30-keV, 1-mA to 10-mA H' beam to 2.1 MeV under both pulsed and continuous wave (CW) RF operation. The available he…
LLRF Hardware Testbench Open
With continual advances and the development of new technologies, such as superconducting cavities, particle accelerators have become more complex. New accelerator designs have more demanding stability requirements for the cavity RF fields,…
View article: Updates to the Low-Level RF Architecture for Fermilab
Updates to the Low-Level RF Architecture for Fermilab Open
Fermilab has teamed with Colorado State University on several projects in LLRF controls and architecture. These projects include new LLRF hardware, updated controls techniques, and new system architectures. Here we present a summary of our…
View article: First Principles Modeling of RFQ Cooling System and Resonant Frequency Responses for Fermilab’s PIP-II Injector Test
First Principles Modeling of RFQ Cooling System and Resonant Frequency Responses for Fermilab’s PIP-II Injector Test Open
In this study we develop an a priori method for simulating dynamic resonant frequency and temperature responses in a radio frequency quadrupole (RFQ) and its associated water-based cooling system respectively. Our model provides a computat…
View article: Neural Network Model Of The PXIE RFQ Cooling System and Resonant Frequency Response
Neural Network Model Of The PXIE RFQ Cooling System and Resonant Frequency Response Open
As part of the PIP-II Injector Experiment (PXIE) accelerator, a four-vane radio frequency quadrupole (RFQ) accelerates a 30-keV, 1-mA to 10-mA H- ion beam to 2.1 MeV. It is designed to operate at a frequency of 162.5 MHz with arbitrary dut…
View article: Resonant Frequency Control For the PIP-II Injector Test RFQ: Control Framework and Initial Results
Resonant Frequency Control For the PIP-II Injector Test RFQ: Control Framework and Initial Results Open
For the PIP-II Injector Test (PI-Test) at Fermilab, a four-vane radio frequency quadrupole (RFQ) is designed to accelerate a 30-keV, 1-mA to 10-mA, H- beam to 2.1 MeV under both pulsed and continuous wave (CW) RF operation. The available h…
First Steps Toward Incorporating Image Based Diagnostics Into Particle Accelerator Control Systems Using Convolutional Neural Networks Open
At present, a variety of image-based diagnostics are used in particle accelerator systems. Often times, these are viewed by a human operator who then makes appropriate adjustments to the machine. Given recent advances in using convolutiona…
View article: Neural Networks for Modeling and Control of Particle Accelerators
Neural Networks for Modeling and Control of Particle Accelerators Open
We describe some of the challenges of particle accelerator control, highlight recent advances in neural network techniques, discuss some promising avenues for incorporating neural networks into particle accelerator control systems, and des…
Deep Saturated Free Electron Laser Oscillators and Frozen Spikes Open
We analyze the behavior of Free Electron Laser (FEL) oscillators operating in the deep saturated regime and point out the formation of sub-peaks of the optical pulse. They are very stable configurations, having a width corresponding to a c…
Frequency Domain Simulations of Co-linear X-band Energy Booster (CXEB) RF Cavity Structures and Passive RF Components with ACE3P Open
Due to their higher intrinsic shunt impedance X-band accelerating structures offer significant gradients with relatively modest input powers, and this can lead to more compact light sources. At the Colorado State University Accelerator Lab…
Wakefield Excitation in Power Extraction Cavity (PEC) of Co-linear X-band Energy Booster (CXEB) in Time Domain (T3P) with ACE3P Open
In our previous papers we provided the general concept and the design details of our proposed Co-linear X-band Energy Booster (CXEB) as well as more advanced 3D simulations of our system using the frequency domain solvers OMEGA3P and S3P o…