Introduction to PIPII and PIP 2 IT Lionel

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Introduction to PIP-II and PIP 2 IT Lionel Prost, Alexander “Sasha” Shemyakin Introduction to

Introduction to PIP-II and PIP 2 IT Lionel Prost, Alexander “Sasha” Shemyakin Introduction to PIP 2 IT tour 11 October 2017

Proton Improvement Plan – II (PIP-II) • Upgrades for Fermilab Accelerator Complex – The

Proton Improvement Plan – II (PIP-II) • Upgrades for Fermilab Accelerator Complex – The central part: 800 Me. V, 2 m. A CW-compatible HSuperconducting Linac and beam line to Booster • Present warm Linac: 400 Me. V, 30 m. A, 40µs x 15 Hz – MW – class accelerator with multi-user operation capability • Platform for future upgrades – PIP-III: Higher MI power; multiple experiments Layout of PIP-II and its possible future upgrades 2 L. Prost, A. Shemyakin | PIP 2 IT tour 10/11/2017

PIP-II Injector Test (PIP 2 IT) • PIP 2 IT: a test accelerator representing

PIP-II Injector Test (PIP 2 IT) • PIP 2 IT: a test accelerator representing the PIP-II front end • What you will see today 30 ke. V 2. 1 Me. V LEBT RFQ ~160 m PIP-II Linac scheme MEBT Warm front end 10 Me. V 25 Me. V HWR SSR 1 HEBT PIP 2 IT scheme LEBT = Low Energy Beam Transport; RFQ= Radio Frequency Quadrupole; MEBT= Medium Energy Beam Transport; HWR = Half-Wave Resonator; SSR 1=Single Spoke Resonator; HEBT = High Energy Beam Transport 3 L. Prost, A. Shemyakin | PIP 2 IT tour 10/11/2017

PIP 2 IT: Testing one-of-a-kind elements of PIP-II • Protons (H-) are heavy =>

PIP 2 IT: Testing one-of-a-kind elements of PIP-II • Protons (H-) are heavy => velocity changes slowly => variety of different accelerator structures – – Ion source (30 ke. V), RFQ (2. 1 Me. V), HWR (10 Me. V), SSR 1 (25 Me. V) • Bunch-by-bunch selection scheme 4 L. Prost, A. Shemyakin | PIP 2 IT tour 10/11/2017

Unique feature of PIP-II: flexible bunch structure • “Bunch-by-bunch selection” in MEBT allows removing

Unique feature of PIP-II: flexible bunch structure • “Bunch-by-bunch selection” in MEBT allows removing unneeded bunches – Effective injection into the Booster – With an RF separator at the end of the linac, possibility to deliver quasi-simultaneously to different users the beam with very different time structure • The selection scheme is being tested at PIP 2 IT – Chopper: Two kickers working in sync and absorber. Simulated 3σ envelopes of passed (top) and removed (bottom) bunches. 5 L. Prost, A. Shemyakin | PIP 2 IT tour 10/11/2017

PIP 2 IT warm front end • In its final configuration, “almost” the PIP-II

PIP 2 IT warm front end • In its final configuration, “almost” the PIP-II front end. – Differences: only one ion source; shorter MEBT • Presently assembled and partially measured – Ion source, LEBT, RFQ – All MEBT focusing elements • magnets and bunching cavities – Kicker prototypes – Most of diagnostics IS + LEBT Demonstration of capability to create an arbitrary bunch structure MEBT RFQ Beam to dump or HWR cryomodule Scheme of PIP 2 IT warm front end 6 L. Prost, A. Shemyakin | PIP 2 IT tour 10/11/2017