Fermilab PIP Booster Accelerator RF Cavity Refurbishment Matt Slabaugh ARW 2015 27 April 2015.

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Presentation transcript:

Fermilab PIP Booster Accelerator RF Cavity Refurbishment Matt Slabaugh ARW April 2015

Topics Proton Improvement Plan (PIP) Booster Radio Frequency (RF) Cavities Cavity Refurbishment Tuner Refurbishment Planning for failure Testing and Summary 4/27/2015M. Slabaugh | Fermilab PIP Booster Accelerator RF Cavity Refurbishment2

Booster RF Cavity 4/27/2015M. Slabaugh | Fermilab PIP Booster Accelerator RF Cavity Refurbishment3 Circa bid drawing (obsolete) Critical advantage: Access to retired personnel with development knowledge

Cavity Refurbishment- Scope 4/27/2015M. Slabaugh | Fermilab PIP Booster Accelerator RF Cavity Refurbishment4 Vacuum Misc. RF Contact Cavities are radioactive and fragile!

Cavity Refurbishment- RF Contact 4/27/2015M. Slabaugh | Fermilab PIP Booster Accelerator RF Cavity Refurbishment5 Milling improved quality, reduced time and distance (dose). ~ 7 days  2 days Insufficient contact = heat and RF leakage

Cavity Refurbishment- Vacuum Repair and Upgrade 4/27/2015M. Slabaugh | Fermilab PIP Booster Accelerator RF Cavity Refurbishment6 Leaking “pie-tin” quick disconnect flange Removal with Wach’s tool Replace with solid flange

Cavity Refurbishment 4/27/2015M. Slabaugh | Fermilab PIP Booster Accelerator RF Cavity Refurbishment7 Water cooling repair/upgrade Alignment fiducials installed Improvised repair tooling Internal sparking and damage

Tuner Refurbishment 4/27/2015M. Slabaugh | Fermilab PIP Booster Accelerator RF Cavity Refurbishment8 Contact surfaces Cones Cooling lines Each tuner: 500+ pieces 150ft+ tubing 50+ water connections 44in long 650lbs Each tuner: 500+ pieces 150ft+ tubing 50+ water connections 44in long 650lbs Ferrite

Tuner Refurbishment 4/27/2015M. Slabaugh | Fermilab PIP Booster Accelerator RF Cavity Refurbishment9

Tuner Refurbishment- Risk 4/27/2015M. Slabaugh | Fermilab PIP Booster Accelerator RF Cavity Refurbishment10

Tuner Refurbishment- Procurement and challenges 4/27/2015M. Slabaugh | Fermilab PIP Booster Accelerator RF Cavity Refurbishment11 Difficult procurement –Stock items not stock (tube sizes) –Common processes no longer common –Unusual materials Original drawings not updated –Undocumented revisions –All hand drawings, no CAD Little data available for optimizing design changes or benchmarking

Tuner Refurbishment- Planning for failure Have begun building new tuner assemblies Potentially replace all refurbished tuners with new 4/27/2015M. Slabaugh | Fermilab PIP Booster Accelerator RF Cavity Refurbishment12

Cavity Testing and Summary Each assembly tested for two weeks prior to install Thermal sensors near critical surfaces for real time data Beginning production of two spare cavities 4/27/2015M. Slabaugh | Fermilab PIP Booster Accelerator RF Cavity Refurbishment13 17 of 20 cavities installed 50 tuners refurbished 3 tuners built new