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Title: Measurements of a newly designed BPM for the Tevatron Electron Lens 2

Abstract

Fermilab has developed a second electron lens (TEL-2) for beam-beam compensation in the Tevatron as part of its Run II upgrade program. Operation of the beam position monitors (BPMs) in the first electron lens (TEL-1) showed a systematic transverse position difference between short proton bunches (2 ns sigma) and long electron pulses ({approx}1 us) of up to {approx}1.5 mm. This difference was attributed to frequency dependence in the BPM system. The TEL-2 BPMs utilize a new compact four plate design with grounding strips between plates to minimize crosstalk. In-situ measurements of these new BPMs are made using a stretched wire pulsed with both proton and electron beam formats. In addition, longitudinal impedance measurements of the TEL-2 are presented. Signal processing algorithm studies indicate that the frequency dependent transverse position offset may be reduced to {approx}0.1 mm for the beam structures of interest.

Authors:
; ; ; ; ; ; ;
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
892312
Report Number(s):
FERMILAB-CONF-06-140-AD
TRN: US0701362
DOE Contract Number:
AC02-76CH03000
Resource Type:
Conference
Resource Relation:
Journal Name: AIP Conf.Proc.868:481-487,2006; Conference: Presented at 12th Beam Instrumentation Workshop (BIW06), Fermilab, Batavia, Illinois, 1-4 May 2006
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; ALGORITHMS; BEAM POSITION; DESIGN; ELECTRON BEAMS; ELECTRONS; FERMILAB; FERMILAB TEVATRON; FREQUENCY DEPENDENCE; IMPEDANCE; MONITORS; PLATES; PROCESSING; PROTONS; UNINTERRUPTIBLE POWER SUPPLIES; Instrumentation

Citation Formats

Scarpine, V.E., Fellenz, B., Kuznetsov, G., Kamerdzhiev, V., Olson, M., Shiltsev, V.D., Zhang, X.L., and /Fermilab. Measurements of a newly designed BPM for the Tevatron Electron Lens 2. United States: N. p., 2006. Web.
Scarpine, V.E., Fellenz, B., Kuznetsov, G., Kamerdzhiev, V., Olson, M., Shiltsev, V.D., Zhang, X.L., & /Fermilab. Measurements of a newly designed BPM for the Tevatron Electron Lens 2. United States.
Scarpine, V.E., Fellenz, B., Kuznetsov, G., Kamerdzhiev, V., Olson, M., Shiltsev, V.D., Zhang, X.L., and /Fermilab. Mon . "Measurements of a newly designed BPM for the Tevatron Electron Lens 2". United States. doi:. https://www.osti.gov/servlets/purl/892312.
@article{osti_892312,
title = {Measurements of a newly designed BPM for the Tevatron Electron Lens 2},
author = {Scarpine, V.E. and Fellenz, B. and Kuznetsov, G. and Kamerdzhiev, V. and Olson, M. and Shiltsev, V.D. and Zhang, X.L. and /Fermilab},
abstractNote = {Fermilab has developed a second electron lens (TEL-2) for beam-beam compensation in the Tevatron as part of its Run II upgrade program. Operation of the beam position monitors (BPMs) in the first electron lens (TEL-1) showed a systematic transverse position difference between short proton bunches (2 ns sigma) and long electron pulses ({approx}1 us) of up to {approx}1.5 mm. This difference was attributed to frequency dependence in the BPM system. The TEL-2 BPMs utilize a new compact four plate design with grounding strips between plates to minimize crosstalk. In-situ measurements of these new BPMs are made using a stretched wire pulsed with both proton and electron beam formats. In addition, longitudinal impedance measurements of the TEL-2 are presented. Signal processing algorithm studies indicate that the frequency dependent transverse position offset may be reduced to {approx}0.1 mm for the beam structures of interest.},
doi = {},
journal = {AIP Conf.Proc.868:481-487,2006},
number = ,
volume = ,
place = {United States},
year = {Mon May 01 00:00:00 EDT 2006},
month = {Mon May 01 00:00:00 EDT 2006}
}

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  • Fermilab has developed a second electron lens (TEL-2) for beam-beam compensation in the Tevatron as part of its Run II upgrade program. Operation of the beam position monitors (BPMs) in the first electron lens (TEL-1) showed a systematic transverse position difference between short proton bunches (2 ns sigma) and long electron pulses ({approx}1 us) of up to {approx}1.5 mm. This difference was attributed to frequency dependence in the BPM system. The TEL-2 BPMs utilize a new, compact four-plate design with grounding strips between plates to minimize crosstalk. In-situ measurements of these new BPMs are made using a stretched wire pulsedmore » with both proton and electron beam formats. In addition, longitudinal impedance measurements of the TEL-2 are presented. Signal processing algorithm studies indicate that the frequency-dependent transverse position offset may be reduced to {approx}0.1 mm for the beam structures of interest.« less
  • The remote sensing system for local or diffuse concentrations of gaseous air pollutants developed and realized by the ILK Dresden is a very compact and low mass apparatus based on the tunable diode laser (TDL) techniques in pulse or cw mode regime. The prototypes are characterized by compact design (300x150x300mm3) and stand-alone and mains-independent operation that allows a fast, flexible and mobile use in different applications. The first hardware version works as an one laser monitor while the advanced version provides for the simultaneous operation of two lasers and can thus measure two gaseous pollutants at the same time. Themore » sensitivity limits for CO and NO were determined at 13ppb x 100m and at 22ppb x 100m respectively. Optical measurement paths are possible up to 700m. The paper presented results of field measurements of the gaseous pollutants in the open atmosphere, i.e. traffic-induced CO and NO as well as CH{sub 4} and NH{sub 3} landfill gases. Furthermore, the authors have investigated in co-operation with the FH Duesseldorf the ILK TDL-system and commercial remote sensing systems for air pollutant monitoring, especially the FTIR and DOAS systems, in different comparison measurements under real field conditions.« less
  • A prototype "electron lens" for the Tevatron beam-beam compensation project is commissioned at Fermilab. We de-scribe the set-up, report results of the first tests of the elec-tron beam, and discuss future plans.
  • No abstract prepared.
  • No abstract prepared.