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Motivation for Booster RF Upgrade

To enhance Fermilab's neutrino program, the Booster must increase proton delivery rates. Upgrades are crucial due to tunnel losses and maintenance issues with current RF cavities. The proposal outlines costs, timelines, and the need for community support.

christopherortiz
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Motivation for Booster RF Upgrade

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  1. Motivation for Booster RF Upgrade • To support the neutrino program at Fermilab (MiniBooNE, NUMI + ? ) , the Booster will have to deliver somewhere between 5 and 10 times the rate of protons that it can deliver now. If MiniBooNE and NUMI run together, peak demand will occur some time in 2005. • The total Booster intensity is limited by losses in the tunnel which already lead to disturbing levels of activation. • The existing RF cavities are problematic for two reasons • They are a primary aperture restriction (2 ¼” vs. 3 ¼” beam pipe). • They are fairly high maintenance, so their activation is a concern. • In order for this to happen in a timely manner, we must: • Present it as a concrete plan to the Fermilab management. • Get lots of support (and maybe even $$) from physics community and universities.

  2. Summary of Proton Ecomomics MiniBooNE baseline 5E20 p/year Radiation Issues Booster Hardware Issues NUMI “baseline” = 13.4E12 pps x 2E7 s/year 2.7E20 p/year Right now we’re at roughly 1/5 of the MiniBooNE baseline *assuming 5E12 protons per batch

  3. Booster Losses (Normalized to Trip Point) BRF11: 200 mR/hr @ 1ft BRF15: 300 mR/hr @ 1ft

  4. Upgrade Cost Estimate • Summary: • ~$260K per cavity, of which $160K goes for the three tuners. • A roughly equal amount for the power supply chain. • About 20 cavities. • -> $11M total

  5. Questions to Answer • Accuracy of the Cost Estimate? • Status: • First prototype • Vacuum prototype • Design • Reasonable timeline. • Ways to save money: • Use old tuners? • Use existing power supplies? • Ways in which universities can help: • Political pressure • Money • Fabrication

  6. Some Issues • What is the best stacking procedure? Three in parallel or one at a time? • How much manpower and time will we need? • What are the radiation budget implications? Fields near the collimators are 5-10 mR/hr. • Can we take advantage of help offered by MiniBooNE? • Are there any modifications which should be made to the collimator stands to facilitate later servicing when they’re hot?

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