Wire Position Monitoring with FPGA based Electronics

Eddy, N; Lysenko, O

doi:10.2172/971001

Title: Wire Position Monitoring with FPGA based Electronics

Full Record
Other Related Research

Abstract

This fall the first Tesla-style cryomodule cooldown test is being performed at Fermilab. Instrumentation department is preparing the electronics to handle the data from a set of wire position monitors (WPMs). For simulation purposes a prototype pipe with a WMP has been developed and built. The system is based on the measurement of signals induced in pickups by 320 MHz signal carried by a wire through the WPM. The wire is stretched along the pipe with a tensioning load of 9.07 kg. The WPM consists of four 50 {Omega} striplines spaced 90{sup o} apart. FPGA based digitizer scans the WPM and transmits the data to a PC via VME interface. The data acquisition is based on the PC running LabView. In order to increase the accuracy and convenience of the measurements some modifications were required. The first is implementation of an average and decimation filter algorithm in the integrator operation in the FPGA. The second is the development of alternative tool for WPM measurements in the PC. The paper describes how these modifications were performed and test results of a new design. The last cryomodule generation has a single chain of seven WPMs (placed in critical positions: at each end,more »« less

Authors:: Eddy, N; Lysenko, O

Publication Date:: Thu Jan 01 00:00:00 EST 2009

Research Org.:: Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 971001

Report Number(s):: FERMILAB-TM-2441-AD
TRN: US1001125

DOE Contract Number:: AC02-07CH11359

Resource Type:: Technical Report

Country of Publication:: United States

Language:: English

Subject:: 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; ACCURACY; ALGORITHMS; CONSTRUCTION; DATA ACQUISITION; DESIGN; DIGITIZERS; FERMILAB; IMPLEMENTATION; ITALY; MODIFICATIONS; MONITORING; MONITORS; SIMULATION; Instrumentation

Citation Formats


                    Eddy, N, Lysenko, O, and /Fermilab. Wire Position Monitoring with FPGA based Electronics.  United States: N. p., 2009. 
        Web.  doi:10.2172/971001.

Copy to clipboard


                    Eddy, N, Lysenko, O, & /Fermilab. Wire Position Monitoring with FPGA based Electronics.  United States.  https://doi.org/10.2172/971001

Copy to clipboard


                    Eddy, N, Lysenko, O, and /Fermilab. 2009.  
        "Wire Position Monitoring with FPGA based Electronics".  United States.  https://doi.org/10.2172/971001.  https://www.osti.gov/servlets/purl/971001.

Copy to clipboard


                    
@article{osti_971001,

  title        = {Wire Position Monitoring with FPGA based Electronics},

  author       = {Eddy, N and Lysenko, O and /Fermilab},

  abstractNote = {This fall the first Tesla-style cryomodule cooldown test is being performed at Fermilab. Instrumentation department is preparing the electronics to handle the data from a set of wire position monitors (WPMs). For simulation purposes a prototype pipe with a WMP has been developed and built. The system is based on the measurement of signals induced in pickups by 320 MHz signal carried by a wire through the WPM. The wire is stretched along the pipe with a tensioning load of 9.07 kg. The WPM consists of four 50 {Omega} striplines spaced 90{sup o} apart. FPGA based digitizer scans the WPM and transmits the data to a PC via VME interface. The data acquisition is based on the PC running LabView. In order to increase the accuracy and convenience of the measurements some modifications were required. The first is implementation of an average and decimation filter algorithm in the integrator operation in the FPGA. The second is the development of alternative tool for WPM measurements in the PC. The paper describes how these modifications were performed and test results of a new design. The last cryomodule generation has a single chain of seven WPMs (placed in critical positions: at each end, at the three posts and between the posts) to monitor a cold mass displacement during cooldown. The system was developed in Italy in collaboration with DESY. Similar developments have taken place at Fermilab in the frame of cryomodules construction for SCRF research. This fall preliminary cryomodule cooldown test is being performed. In order to prepare an appropriate electronic system for the test a prototype pipe with a WMP has been developed and built, figure 1. The system is based on the measurement of signals induced in pickups by 320 MHz signal carried by a wire through the WPM. The 0.5 mm diameter Cu wire is stretched along the pipe with a tensioning load of 9.07 kg and has a length of 1.1 m. The WPM consists of four 50 {Omega} striplines spaced 90{sup o} apart. An FPGA based digitizer collects the WPM data and transmits it to the VME controller. The VME front-end processes the raw data to calculate positions and perform FFT. It is also provides the raw data to LabView running on a PC upon request. In order to increase the accuracy and convenience of the measurements some modifications were required. The first is connected with realization of average and decimation filter algorithm in the integrator operation in the FPGA. The second is connected with development of alternative tool for WPM measurements in the PC. We will discuss how these modifications were performed and test results of a new design.},

  doi          = {10.2172/971001},

  url          = {https://www.osti.gov/biblio/971001},
  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {Thu Jan 01 00:00:00 EST 2009},

  month        = {Thu Jan 01 00:00:00 EST 2009}

}

Copy to clipboard

Technical Report:

View Technical Report

https://doi.org/10.2172/971001

Save / Share:

Export Metadata

Save to My Library

Similar records in OSTI.GOV collections:

A Wire Position Monitor System for the 1.3 FHZ Tesla-Style Cryomodule at the Fermilab New-Muon-Lab Accelerator

Conference Eddy, N; Fellenz, B; Prieto, P; ...

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 of the helium gas return pipe with the connected 1.3 GHz SRF accelerating cavities is measured along the {approx}15 m long module using a stretched-wire position monitoring system. An overview of the wire position monitor system technology is given, along with preliminary results taken at the initial module cooldown, and during further testing. As the measurement system offers a high resolution, we also discuss options for use as a vibration detector. An electron beam testmore »« less
Full Text Available
BPM SYSTEM FOR THE SNS RING AND TRANSFER LINES.

Conference DAWSON, W; CAMERON, P; CERNIGLIA, P; ...

The Spallation Neutron Source Ring accumulates about 1060 pulses of 38mA peak current IGeV H-minus particles from the Linac thru the HEBT line, then delivers this accumulated beam in a single pulse to the mercury target via the RTBT line. Bunching frequency of beam in the HEBT line is 402.5MHz, and about 1MHz in the Ring and RTBT. Position monitor electrodes in HEBT are of the shorted stripline type, with apertures of 12cm except in the dispersive bend, where the aperture is 21cm. Ring and RTBT electrodes are open striplines, with apertures of 21, 26, 30, and 36cm. All pickupsmore »« less
Full Text Available
Performance of the LLRF System for the Fermilab PIP-II Injector Test

Conference Varghese, Philip; Chase, Brian; Doolittle, Lawrence; ...

PIP-II IT is a test facility for the PIP-II project where the injector, warm front-end, and the first two superconducting cryomodules are being tested. The 8-cavity half-wave-resonator (HWR) cryomodule operating at 162.5 MHz is followed by the 8-cavity single-spoke resonator(SSR1) cryomodule operating at 325 MHz. The LLRF systems for both cryomodules are based on a common SOC FPGA-based hardware platform. The resonance control systems for the two cryomodules are quite different, the first being a pneumatic system based on helium pressure and the latter a piezo/stepper motor type control. The data acquisition and control system can support both CW andmore »« less
https://doi.org/10.18429/JACoW-IPAC2021-THPAB338

Full Text Available
A Dual Digital Signal Processor VME Board for Instrumentation and Control Applications

Conference Dong, H; Flood, R; Hovater, C; ...

A Dual Digital Signal Processing VME Board is being developed for the CEBAF Beam Current Monitor system at Jefferson Lab. It is a versatile general-purpose digital signal processing board using an open architecture, which allows for adaptation to various applications. The base design uses two independent Texas Instrument (TI) TMS320C6711, which are 900 MFLOPS floating-point digital signal processors (DSP). Applications that require a fixed point DSP can be implemented by replacing the baseline DSP with the pin-for-pin compatible TMS320C6211. Both parallel and serial protocols have been implemented for communicating with off board devices. The initial implementation makes use of TImore »« less
Full Text Available
Scintillation counter and wire chamber front end modules for high energy physics experiments

Technical Report Baldin, Boris; DalMonte, Lou

This document describes two front-end modules developed for the proposed MIPP upgrade (P-960) experiment at Fermilab. The scintillation counter module was developed for the Plastic Ball detector time and charge measurements. The module has eight LEMO 00 input connectors terminated with 50 ohms and accepts negative photomultiplier signals in the range 0.25...1000 pC with the maximum input voltage of 4.0 V. Each input has a passive splitter with integration and differentiation times of {approx}20 ns. The integrated portion of the signal is digitized at 26.55 MHz by Analog Devices AD9229 12-bit pipelined 4-channel ADC. The differentiated signal is discriminated formore »« less
https://doi.org/10.2172/1005351

Full Text Available

Similar Records