ATF Facility Updates and Enhancements Meeting Summary

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November 14, 2018
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UED Updates
ATF EH 2017/2018 Comparison
ATF EH Status
Beamline 1
Beamline 2
Experimental Hall Shielding
CO
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 Laser Transport
Going Forward
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Gun cathode re-polished
Improved vacuum
HVAC system connected to new B912 chilled
water distribution system, ample capacity
UED Cleanroom operating on new high capacity
chilled water supply
Previous dedicated chiller in place as backup unit
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BL1
20° Leg of BL2
BL1
20° Leg of BL2
Labyrinth/Shielding
Labyrinth/Shielding
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Inverse Compton
Scattering
Laser
Wakefield
Straight
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Nov 2018
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New shielding in place
BL2 is fully operational
BL1 serving ICS and LWFA chambers
CO
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 vacuum laser transport installed and
connected to the LWFA chamber
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Simultaneously accommodates LWFA and ICS
experiments
Integrated differential pumping system in progress
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ICS
LWFA
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Straight extension allows measurement of longitudinal
distribution (footprint) of electron bunch
Additional quadrupoles allow improved imaging
Reconfigured to take advantage of x-band cavity
Leg orientation mirrored 20° to increase floor space
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Straight
Extension
Quadrupoles
20° Leg
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Plasma
shutter
BL1 experimental
chambers, ICS &
LWFA
Ion chamber,
existing experimental
chamber
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EH
FEL
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Delivers high power CO
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 laser to BL1
Accommodates ICS & LWFA chambers
Laser/e-beam experiments with plasma at BL1
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Also delivers high power CO
2
 laser to the FEL
room Ion chamber
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Plasma Shutter in
FEL Room
Ion Chamber in
FEL Room
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Experimental
Hall
CO
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Main
FEL
Room
CO
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 Amp
CO
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 Laser
Transport
Beamline 1
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Capability for potential
expansion to BL2 exists
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Fault studies at higher power have been
conducted
Fault conditions at higher power generate x-rays
New safety requirements are necessary for fault
conditions
A shielding and operation plan is being developed (ATF
& RSC) to safely deliver high power beam while
maintaining operational efficiency
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Stable seed oscillator for UED has been ordered
NLPC subscale proof of concept demonstrator
Extended vacuum transport to include a flexible
polarization adjustment for CO
2
 laser transport
Integrated differential pumping on BL1
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Updates and improvements at the ATF Facility as discussed in a meeting include re-polishing of gun cathode, enhanced vacuum systems, reconfiguration of the experimental hall, improvements in beamlines for LWFA and ICS experiments, and new shielding configurations. Beamline enhancements allow for better imaging and measurement of electron bunch distributions, while CO2 vacuum laser transport is connected for LWFA experiments. The facility shows advancements in serving ICS and LWFA chambers, and the status report indicates operational readiness in various areas.

  • ATF Facility
  • Updates
  • Enhancements
  • Beamlines
  • Experimental Hall

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Presentation Transcript


  1. 21stATF Users Meeting ATF Facility Updates Chris Cullen ATF Facility Engineer November 14, 2018

  2. Topics UED Updates ATF EH 2017/2018 Comparison ATF EH Status Beamline 1 Beamline 2 Experimental Hall Shielding CO2Laser Transport Going Forward 2

  3. UED Updates Gun cathode re-polished Improved vacuum HVAC system connected to new B912 chilled water distribution system, ample capacity UED Cleanroom operating on new high capacity chilled water supply Previous dedicated chiller in place as backup unit 3

  4. ATF Experimental Hall Reconfiguration FY17 Configuration FY18 Configuration BL1 Labyrinth/Shielding Inverse Compton Scattering Laser Wakefield Labyrinth/Shielding BL1 20 Leg of BL2 20 Leg of BL2 Straight Extension 4

  5. ATF Experimental Hall Nov 2017 Nov 2018 5

  6. Experimental Hall Status New shielding in place BL2 is fully operational BL1 serving ICS and LWFA chambers CO2 vacuum laser transport installed and connected to the LWFA chamber 6

  7. Beamline 1 Improvements Simultaneously accommodates LWFA and ICS experiments Integrated differential pumping system in progress ICS LWFA 7

  8. Beamline 2 Improvements Straight extension allows measurement of longitudinal distribution (footprint) of electron bunch Additional quadrupoles allow improved imaging Reconfigured to take advantage of x-band cavity Leg orientation mirrored 20 to increase floor space 20 Leg Quadrupoles Straight Extension 8

  9. ATF EH Shielding Configuration FY17 shielding configuration FY18 shielding configuration 9

  10. CO2 Vacuum Laser Transport FEL Ion chamber, existing experimental chamber Plasma shutter EH 10 BL1 experimental chambers, ICS & LWFA

  11. CO2 Vacuum Laser Transport Delivers high power CO2 laser to BL1 Accommodates ICS & LWFA chambers Laser/e-beam experiments with plasma at BL1 11

  12. CO2 Vacuum Laser Transport Also delivers high power CO2 laser to the FEL room Ion chamber Plasma Shutter in FEL Room Ion Chamber in FEL Room 12

  13. CO2 Laser Transport Plan View FEL Room CO2 Main CO2 Amp CO2 Laser Transport Beamline 1 Capability for potential expansion to BL2 exists Experimental Hall 13

  14. CO2 Laser Safety Requirements Fault studies at higher power have been conducted Fault conditions at higher power generate x-rays New safety requirements are necessary for fault conditions A shielding and operation plan is being developed (ATF & RSC) to safely deliver high power beam while maintaining operational efficiency 14

  15. Going Forward, Planned Improvements Stable seed oscillator for UED has been ordered NLPC subscale proof of concept demonstrator Extended vacuum transport to include a flexible polarization adjustment for CO2 laser transport Integrated differential pumping on BL1 15

  16. Thank You! Questions?

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