18.1k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
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170 papers · 2 filters
Formation and Acceleration of Uniformly-Filled Ellipsoidal Electron Bunches Obtained via Space-Charge-Driven Expansion from a Cesium-Telluride Photocathode
P. Piot, Y. -E Sun, T. J. Maxwell +3
We report the experimental generation, acceleration and characterization of a uniformly-filled electron bunch obtained via space-charge-driven expansion (often referred to as "blow…
Synchroscan streak camera imaging at a 15-MeV photoinjector with emittance exchange
A. H. Lumpkin, J. Ruan, R. Thurman-Keup
At the Fermilab A0 photoinjector facility, bunch-length measurements of the laser micropulse and the e-beam micropulse have been done in the past with a fast single-sweep module of…
Transverse beam shape measurements of intense proton beams using optical transition radiation
Victor E. Scarpine
A number of particle physics experiments are being proposed as part of the Department of Energy HEP Intensity Frontier. Many of these experiments will utilize megawatt level proton…
ACSYS in a box
C. Briegel, D. Finstrom, B. Hendricks +9
The Accelerator Control System at Fermilab has evolved to enable this relatively large control system to be encapsulated into a "box" such as a laptop. The goal was to provide a pl…
Cryogenic loss monitors with FPGA TDC signal processing
A. Warner, J. Wu
Radiation hard helium gas ionization chambers capable of operating in vacuum at temperatures ranging from 5K to 350K have been designed, fabricated and tested and will be used insi…
Development of a machine protection system for the Superconducting Beam Test Facility at Fermilab
A. Warner, L. Carmichael, M. Church +1
Fermilab's Superconducting RF Beam Test Facility currently under construction will produce electron beams capable of damaging the acceleration structures and the beam line vacuum c…
Tevatron Beam Position Monitor Upgrade
G. Annala, B. Banerjee, B. Barker +24
This paper describes the development of a digital-based Beam Position System which was designed, developed, and adapted for the Tevatron during Collider Run II.
Third Interger Resonance Slow Extraction Using RFKO at High Space Charge
V. Nagaslaev, J. Amundson, J. Johnstone +2
A proposal to search for direct μ-->e conversion at Fermilab requires slow, resonant extraction of an intense proton beam. Large space charge forces will present challenges, partly…
CMS Pixel Telescope Addition to T-980 Bent Crystal Collimation Experiment at the Tevatron
Ryan Rivera, Jerry Annala, Todd Johnson +7
An enhancement to the T-980 bent crystal collimation experiment at the Tevatron has been completed. The enhancement was the installation of a pixel telescope inside the vacuum-seal…
Coil Creep and Skew-Quadrupole Field Components in the Tevatron
G. Annala, D. J. Harding, M. J. Syphers
During the first 20 years of operation, the Fermilab Tevatron developed strong coupling between the two transverse degrees of freedom. The required strength of the circuit of skew…
A 6kV Arbitrary Waveform Generator for the Tevatron Lens
H. Pfeffer, G. Saewert
This paper reports on a 6 kV modulator built and installed at Fermilab to drive the electron gun anode for the Tevatron Electron Lens (TEL). The TEL was built with the intention of…
A Wire Position Monitor System for the 1.3 GHZ Tesla-Style Cryomodule at the Fermilab New-Muon-Lab Accelerator
N. Eddy, B. Fellenz, P. Prieto +3
The first cryomodule for the beam test facility at the Fermilab New-Muon-Lab building is currently under RF commissioning. Among other diagnostics systems, the transverse position…
Operation of the Intensity Monitors in Beam Transport Lines at Fermilab During Run II
J. Crisp, B. Fellenz, J. Fitzgerald +2
The intensity of charged particle beams at Fermilab must be kept within pre-determined safety and operational envelopes in part by assuring all beam within a few percent has been t…
Experiment for transient effects of sudden catastrophic loss of vacuum on a scaled superconducting radio frequency cryomodule
A. Dalesandro, J. Theilacker, S. W. Van Sciver
Safe operation of superconducting radio frequency (SRF) cavities require design consideration of a sudden catastrophic loss of vacuum (SCLV) adjacent with liquid helium (LHe) vesse…
Construction of AC Motor Controllers for NOvA Experiment Upgrades
Patrick Cooley
I have been constructing Alternating Current (AC) motor controllers for manipulation of particle beam detectors. The capability and reliability of these motor controllers are essen…
High Resolution BPM Upgrade for the ATF Damping Ring at KEK
N. Eddy, C. Briegel, B. Fellenz +9
A beam position monitor (BPM) upgrade at the KEK Accelerator Test Facility (ATF) damping ring has been accomplished, carried out by a KEK/FNAL/SLAC collaboration under the umbrella…
SCREAMm - modified code SCREAM to simulate the acceleration of a pulsed beam through the superconducting linac
Yu. Eidelman, S. Nagaitsev, N. Solyak
The code SCREAM -- SuperConducting RElativistic particle Accelerator siMulation was significantly modified and improved. Some misprints in the formulae used have been fixed and a m…
Experiences with permanent magnets at the Fermilab recycler ring
James T. Volk
In order to achieve higher luminosities in Run II a separate antiproton storage ring was built in the Main Injector tunnel. To reduce both construction and operations costs permane…
Using the transverse digital damper as a real-time tune monitor for the Booster synchrotron at Fermilab
N. Eddy, O. Lysenko
The Fermilab Booster is a fast ramping (15Hz) synchrotron which accelerates protons from 400MeV to 8GeV. During commissioning of a transverse digital damper system, it was shown th…
Dynamic PID loop control
L. Pei, A. Klebaner, J. Theilacker +5
The Horizontal Test Stand (HTS) SRF Cavity and Cryomodule 1 (CM1) of eight 9-cell, 1.3GHz SRF cavities are operating at Fermilab. For the cryogenic control system, how to hold liqu…
RF Test Results from Cryomodule 1 at the Fermilab SRF Beam Test Facility
E. Harms, K. Carlson, B. Chase +22
Powered operation of Cryomodule 1 (CM-1) at the Fermilab SRF Beam Test Facility began in late 2010. Since then a series of tests first on the eight individual cavities and then the…
Status and Plans for an SRF Accelerator Test Facility at Fermilab
M. Church, J. Leibfritz, S. Nagaitsev
A superconducting RF accelerator test facility is currently under construction at Fermilab. The accelerator will consist of an electron gun, 40 MeV injector, beam acceleration sect…
Numerical Model for Conduction-Cooled Current Lead Heat Loads
M. J. White, X. L. Wang, H. D. Brueck
Current leads are utilized to deliver electrical power from a room temperature junction mounted on the vacuum vessel to a superconducting magnet located within the vacuum space of…
Impedances of Laminated Vacuum Chambers
A. Burov, V. Lebedev
Longitudinal and transverse impedances are derived for round and flat laminated vacuum chambers.