k. genser fnal/cd
DESCRIPTION
Performance of Tevatron Flying Wire Detectors and Emittance Measurements for Stores 3050-3532 05/28/04. K. Genser FNAL/CD. Performance of FW Detectors. Stores 3050-3532 were analyzed excluding stores 3148-3325 when there was no E11 horizontal wire; - PowerPoint PPT PresentationTRANSCRIPT
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Performance of Tevatron Flying Wire Detectors
and Emittance Measurementsfor Stores 3050-3532
05/28/04
K. Genser
FNAL/CD
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05/28/2004 K. Genser - TeV Flying Wires and Emittance Measurements
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Performance of FW Detectors
• Stores 3050-3532 were analyzed excluding stores 3148-3325 when there was no E11 horizontal wire;
• The E11 proton detector has been showing signs of amplitude increase since March shutdown; other detectors have been stable;
• Despite the amplitude increase the detector does not show signs of saturation.
• The following plots are made using nominal lattice parameters and MDC dp/p formula as outlined in the note 888 & 656
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05/28/2004 K. Genser - TeV Flying Wires and Emittance Measurements
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Performance of FW E11 horizontal pbar detector
• The ratio of Bunch Amplitude times Sigma divided by SBDintensity versus Store for horizontal pbar detector is quite constant over time
Bunch Amplitude*Sigma divided by SBDintensity versus Store for horizontal pbar detector at 150 GeV.
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05/28/2004 K. Genser - TeV Flying Wires and Emittance Measurements
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Performance of FW E11 horizontal pbar detector
• Ratio of pass 1 over pass 2 of Bunch Amplitude times Sigma versus SBDintensity for horizontal pbar detector is quite constant and does not indicate that the detector is saturating
Ratio of pass 1 over pass 2 of Bunch Amplitude*Sigma versus SBDintensity for horizontal pbar detector at 150 GeV.
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05/28/2004 K. Genser - TeV Flying Wires and Emittance Measurements
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Performance of FW E11 horizontal proton detector
• The ratio of Bunch Amplitude times Sigma divided by SBDintensity versus Store for horizontal proton detector has been changing over time
Bunch Amplitude*Sigma divided by SBDintensity versus Store for horizontal proton detector at 150 GeV.
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05/28/2004 K. Genser - TeV Flying Wires and Emittance Measurements
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Performance of FW E11 horizontal proton detector
• Ratio of pass 1 over pass 2 of Bunch Amplitude times Sigma versus SBDintensity for horizontal proton detector is quite constant and does not indicate that the detector is saturating
Ratio of pass 1 over pass 2 of Bunch Amplitude*Sigma versus SBDintensity for horizontal proton detector at 150 GeV.
![Page 7: K. Genser FNAL/CD](https://reader033.vdocuments.mx/reader033/viewer/2022061614/56814834550346895db554bf/html5/thumbnails/7.jpg)
05/28/2004 K. Genser - TeV Flying Wires and Emittance Measurements
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Injection Lattice Changes (pbars)
• Store 3424 lattice change is seen by horizontal Flying Wires
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05/28/2004 K. Genser - TeV Flying Wires and Emittance Measurements
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Injection Lattice Changes (protons)
• Store 3424 lattice change is seen by horizontal Flying Wires;
• Proton detectors indicate another smaller change before store 3528 (due to RF change?)
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Injection Lattice Changes (pbars)
The ratio of E17/E11 Emittances not equal one indicates a discrepancy in the lattice functions
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05/28/2004 K. Genser - TeV Flying Wires and Emittance Measurements
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Injection Lattice Changes (protons)
The ratio of E17/E11 Emittances not equal one indicates a discrepancy in the lattice functions
![Page 11: K. Genser FNAL/CD](https://reader033.vdocuments.mx/reader033/viewer/2022061614/56814834550346895db554bf/html5/thumbnails/11.jpg)
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Collision Lattice Changes (pbars)
• A change is visible before store 3487 with changes afterwards?
• A change before store 3528?
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05/28/2004 K. Genser - TeV Flying Wires and Emittance Measurements
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Collision Lattice Changes (protons)
• Store 3487 lattice change is seen by horizontal Flying Wires;
• Proton detectors indicate another change before store 3528 (most likely due to RF change not accounted for in the current dp/p formula)
![Page 13: K. Genser FNAL/CD](https://reader033.vdocuments.mx/reader033/viewer/2022061614/56814834550346895db554bf/html5/thumbnails/13.jpg)
05/28/2004 K. Genser - TeV Flying Wires and Emittance Measurements
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Collision Lattice Changes (pbars)
The ratio of E17/E11 Emittances not equal one indicates a discrepancy in the lattice functions
![Page 14: K. Genser FNAL/CD](https://reader033.vdocuments.mx/reader033/viewer/2022061614/56814834550346895db554bf/html5/thumbnails/14.jpg)
05/28/2004 K. Genser - TeV Flying Wires and Emittance Measurements
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Collision Lattice Changes (protons)
The ratio of E17/E11 Emittances not equal one indicates a discrepancy in the lattice functions
![Page 15: K. Genser FNAL/CD](https://reader033.vdocuments.mx/reader033/viewer/2022061614/56814834550346895db554bf/html5/thumbnails/15.jpg)
05/28/2004 K. Genser - TeV Flying Wires and Emittance Measurements
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Collision Lattice/Emittance Changes
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Flying Wires see lattice changes
• Both Injection and Collision lattice changes are visible using Flying Wires measurements
• The changes seem to be different for protons than for pbars