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Wire Scanner Application: Version 0

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The WSA shall histogram ('frequency distribution', dX/dn) each of the key ... The wire scanner application shall not be required to interact directly with ... – PowerPoint PPT presentation

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Title: Wire Scanner Application: Version 0


1
Wire Scanner ApplicationVersion 0
  • Elliott McCrory
  • Jerry Cai, Suzanne Gysin, Dennis Nicklaus

2
WSA Allows Operator
  • To initiate a scan of the wires in the LHC
  • To examine, analyze and store data returned from
    wire scanner front end
  • Up to 72 bunches
  • Completely user-selectable
  • To perform fits to the profiles
  • To archive results into SDDS files
  • To calculate the emittance from these profiles
  • Lattice function of nearby BPM
  • Zero momentum spread
  • To manipulate the graphs
  • JDataViewer standard stuff

3
Wire Scanner Application
  • 28 of 33 Requirements met
  • CVS lhc-app-wsa
  • Java Package
  • Cern.lhc.app.wsa.WireScannerApplication
  • Device Class
  • BWSLHC
  • Release
  • http//slwww.cern.ch/pcrops/releaseinfo/pcropsdis
    t/lhc/lhc-app-wsa/PRO/
  • JavaDoc included
  • Heavy use of accsoft-da-profile

4
Requirements, 1
5
Requirements, 2 (1/3)
6
Requirements, 2 (2/3)
7
Requirements, 2 (3/3) 3
8
Requirements, 4
9
Requirements, 5
10
Requirements Met
1.10 1.20 1.30 2.25 2.30 2.35 2.50 5.40
Device Selection
Select In/Out Scan
Lattice Selection
11
Req Met
2.40
12
Req Met
2.55 2.60 2.65 2.70 3.10 3.20 3.30
13
Req Met
2.55 2.60 2.65 2.70 3.10 3.20 3.30
14
Fits
  • 5-Parameter Gaussian Fit
  • Amplitude, Mean, Sigma, Offset, Slope
  • JAS/JMinuit
  • 3-Parameter Gaussian Fit
  • Amplitude, Mean, Sigma
  • Offset Slope derived from data ends
  • Just like the front end
  • JAS/JMinuit
  • RMS Width Calculation
  • Show front end fit results
  • Not really a fit, of course, but implements
    FitFunction interface

15
(No Transcript)
16
Req Met
2.05 2.10 2.15 2.20 2.25
17
Req Met
2.05 2.10 2.15 2.20 2.25
18
Discussion of Requirements Not Met
  • 1.40 Bunch structure The WSA shall know the
    distribution of the beam in the bunches.
  • To be determined.
  • 2.20 Consecutive Scans The number of consecutive
    scans shall be specified to the WSA by the user,
    not to exceed the capabilities of the hardware.
  • To be determined.
  • 2.52 Lattices 1 The WSA shall know the
    transverse lattice parameters at the wire scanner
    devices and the energy at the time of the scan.
  • The lattice functions for the Wire Scanners are
    not in any Lattice database
  • 2.53 Lattices 2 The WSA shall know the
    longitudinal parameters of the beam to provide an
    appropriate correction for the contribution of
    the dispersion and momentum spread to the beam
    size.
  • To be determined.
  • 4.20 History The WSA shall access archived
    profile data. These profiles can be the ones
    stored by the WSA itself, or other profiles that
    are stored by another agent, but that are in an
    identical format as the WSA stored profile data.
  • Not implemented yet. Can write SDDS files, but
    the reading part is not done yet.

19
Version 1 Additions
  • Clean up some architecture
  • FitFunction interface
  • Lattice discovery
  • Setting the precise time to scan
  • Display SummaryAcquisition property
  • Clean up emittance calculation
  • Reduce jar file dependencies
  • Discover the populated bunches
  • Discover BWSLHC devices
  • Users Guide
  • Feedback from AB/OP
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