RFQ Installation Status 10/27/2015 October 27, 2015 Jim Steimel & Curtis Baffes.

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Presentation transcript:

RFQ Installation Status 10/27/2015 October 27, 2015 Jim Steimel & Curtis Baffes

Pictures – RFQ in place Alignment crew surveyed RFQ into place and RFQ is now connected to LEBT. RFQ has been pumped down to specified vacuum pressure. RFQ within about 1” of final location downstream of MEBT.

RFQ Water Cooling System All RFQ wall mount water cooling hardware installed. Copper manifold and instrumentation in place with hoses to follow shortly.

RFQ Input Coupler RFQ supports for input couplers complete. Left input coupler non-vacuum hardware in place, so water hoses for RFQ can be installed without interfering.

Other Milestones Hardware design of resonant control system complete. All hardware is on hand and most is already installed. Work continues on software control algorithm and interfaces. RF fanback design complete and all hardware components are on hand. Still need to order final two pieces of 6” coaxial transmission line.

Installation Order Install non-vacuum components of left coupler (done). Install hoses for RFQ cooling (copper manifold to module manifold). Install power distribution for RFQ water skids pumps and valves. Flush out vane and wall systems through water filter with module bypass hoses. Install RF pickup loop fanback switches and cables. Install working platform and cable tray. Pull instrumentation wiring. Install RF power distribution, 6” coaxial transmission lines.

M EGA INDUSTRIES, LLC RF Solutions RFQ Couplers (162.5 MHz) Status: All components minus vacuum end assemblies shipped. First end assy is brazed and leak tight. Some contamination on alumina window resulted from last braze cycle. Cleaning solutions ineffective. Sandblasting with SiO 2 with dry nitrogen should work, but trying on other alumina samples first. Should complete cleaning by Nov. 4. TiN coating completed by Nov. 12. Final forming and Vacuum tests by Nov. 17 th.

M EGA INDUSTRIES, LLC RF Solutions RFQ Couplers Second vacuum end assy is being assembled for brazing. Should complete brazing by Nov. 11. TiN coating completed Nov. 18. Final forming and vacuum tests by. Nov. 22. Last two vacuum assemblies to be completed by Dec. 15 th.

RFQ Coupler Follow-up We have requested that they focus on trying to get a clean braze on the second coupler instead of trying to clean the first coupler. If braze is successful, third coupler will follow quickly. Process for cleaning first coupler can be developed after two couplers are delivered. Mega will test extra ceramic window in braze oven with outer conductor and braze material to insure no contamination to final antenna. Mega will also hi-pot antenna between 6-10kV.

RFQ Power Amplifier Catastrophic failure of an amplifier slice during CW operation. Believed to be due to high, internal reflected power. Slice sent to vendor (under warranty) for investigation and repairs. Only left amplifier is operational, and we have no more working spares. Left amplifier was tested over the weekend at 50kW output, 20 Hz, 10% duty cycle without failure. May not be able to condition RFQ in CW mode until problem is resolved.