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The use of non-invasive sensors & systems to measure particle beam characteristics is a crucial part of modern accelerator control systems due to their ability to return real time passive measurements without impacting the beam quality.…

Instrumentation and Detectors · Physics 2024-10-25 A. Rouzky , N. Eddy , M. A. Ibrahim

The PIP-II superconducting RF linac is currently under construction at Fermilab and is expected to be completed by the end of 2028. PIP-II is capable of operating in a continuous-wave mode and can concurrently supply 800 MeV protons to a…

Suppression of beam losses is essential for successful operation of high-intensity linac. Historically, the values of the field amplitudes and phases of the side-coupled, 805-MHz LANSCE linac modules are maintained using a well-known…

Accelerator Physics · Physics 2020-02-26 Y. K. Batygin , F. E. Shelley , H. A. Watkins

The energy of a bunched non-relativistic ion beam can be deduced from measuring the beam phases in neighbouring Beam Position Monitors (BPMs). This report discusses implementation of such a procedure at the PIP-II H- linac being constructed…

Accelerator Physics · Physics 2025-09-18 A. Shemyakin , J. Kuharik , R. Sharankova

The Proton Improvement Plan phase II (PIP-II) project currently under construction at FNAL will replace the existing 400 MeV normal conducting linac with a new 800 MeV superconducting linac. The beam power in the downstream rapid-cycling…

Accelerator Physics · Physics 2024-06-03 J. -F. Ostiguy , C. M. Bhat

The closed-off structure of the Fermilab Drift Tube Linac precludes a robust array of instrumentation from directly monitoring the H- beam that is accelerated from 750 keV to 116 MeV. To improve beam tuning and operational assessment of…

Accelerator Physics · Physics 2025-11-25 E. V. Chen , A. L. Saewert , R. V. Sharankova

In Fermilab's PIP-II machine protection system, beam loss signals from various detectors are digitized at 125 MS/s. Noise from both high-frequency sources and low-frequency 60 Hz AC power equipment can contaminate the data. To suppress…

Accelerator Physics · Physics 2026-02-13 J. Wu , A. Warner

The completion of the PIP-II project and its superconducting linear accelerator will provide up to 1.2 MW of beam power to the LBNF/DUNE facility for neutrino physics. It will also be able to produce high-power beams directly from the linac…

The Proton Improvement Plan-II (PIP-II) is a major upgrade to the Fermilab accelerator complex, featuring a new 800-MeV Superconducting Radio-Frequency (SRF) linear accelerator (LINAC) powering the accelerator complex to provide the world's…

Accelerator Physics · Physics 2023-08-23 M White , J Makara , S Ranpariya , L Pei , M Barba , J Subedi , J Dong , B Hansen , A E T Akintola , J Holzbauer , J Ozelis , S Chandrasekaran , V Roger

Optical properties of components in a linac can be reconstructed from analysis of the orbit response matrix, composed from responses of BPMs to changes in currents of dipole correctors. An efficient way to record such response, discussed in…

Accelerator Physics · Physics 2021-09-27 Alexander Shemyakin

The central part of PIP-II program of upgrades pro-posed for the Fermilab injection complex is an 800 MeV, 2 mA, CW-compatible SRF linac. Acceleration in super-conducting cavities begins from a low energy of 2.1 MeV, so that the first…

Accelerator Physics · Physics 2019-12-09 A. Chen , R. Andrews , C. Baffes , D. Lambert , L. Prost , A. Shemyakin , T. Zuchnik

The PIP-II accelerator is a proposed upgrade to the Fermilab accelerator complex that will replace the existing, 400 MeV room temperature LINAC with an 800 MeV superconducting LINAC. Part of this upgrade includes a new injection scheme into…

The U.S. Particle Physics Project Prioritization Panel (P5) report encouraged the realization of Fermilab's Proton Improvement Plan II (PIP-II) to support future neutrino programs in the United States. PIP-II aims at enhancing the…

Accelerator Physics · Physics 2017-01-05 A. Vivoli

The Fermilab Linac experiences longitudinal beam phase drift, leading to increased particle loss, conventionally corrected through labor-intensive manual RF adjustments. This project explores machine learning-based automation for drift…

Accelerator Physics · Physics 2025-11-25 R. R. Chichili , J. A. Sulskis , R. Sharankova , B. Vamanan , S. Ravi

The Fermilab booster has an intensity upgrade plan called the Proton Improvement plan (PIP). The flux throughput goal is 2E17 protons/hour, which is almost double the current operation at 1.1E17 protons/hour. The beam loss in the machine is…

Accelerator Physics · Physics 2013-01-31 K. Seiya , J. Lackey , W. Marsh , W. Pellico , D. Still , K. Triplet , A. Waller

The Fermi National Accelerator Laboratory (Fermilab) Linac accepts 750 keV H- ions from the front end and accelerates them to 400 MeV for injection into the Booster rapid cycling synchrotron. Day-to-day drifts in the beam longitudinal…

Accelerator Physics · Physics 2024-07-25 R. Sharankova , A. Shemyakin , S. Rego

The Fermilab Proton-Improvement-Plan-II (PIP-II) is being implemented in order to support the precision neutrino oscillation measurements at the Deep Underground Neutrino Experiment, the U.S. flagship neutrino experiment. The PIP-II LINAC…

Transverse 2D phase space distribution of a 2.1 MeV, 5 mA H$^-$ beam is measured at the PIPIT test accelerator at Fermilab with an Allison scanner. The paper describes the design, calibration, and performance of the scanner as well as the…

Accelerator Physics · Physics 2021-02-03 C. Richard , J. -P. Carneiro , B. Hanna , L. Prost , A. Saini , V. Scarpine , A. Shemyakin

Fermilab is planning the construction of a prototype front end of the Project X linac. The Project X Injector Experiment (PXIE) is expected to accelerate 1 mA cw H- beam up to 30 MeV. Some of the major goals of the project are to test a cw…

Accelerator Physics · Physics 2013-01-30 V. A. Lebedev , A. V. Shemyakin , J. Steimel , M. Wendt , B. M. Hanna , L. R. Prost , V. E. Scarpine

A 2.1 MeV, 10 mA CW RFQ has been installed and commissioned at Fermilab's test accelerator known as PIP-II Injector Test. This report describes the measurements of the beam properties after acceleration in the RFQ, including the energy and…

Accelerator Physics · Physics 2017-09-25 A. Shemyakin , J. -P. Carneiro , B. Hanna , L. Prost , A. Saini , V. Scarpine , V. L. S. Sista , J. Steimel