RFD Crab Cavity Introduction Project Overview Leonardo Ristori

RFD Crab Cavity Introduction, Project Overview Leonardo Ristori L 2 Manager, HL-LHC AUP / Crab Cavities RFD Design Freeze – 15 March 2018

Introduction § § § The inherited design of the LARP RFD cavity was modified through a number of iterations and cross-checks between AUP and CERN to ensure performance in HLLHC according to new requirements. This process took many months, we are confident that the design presented today meets HL-LHC requirements and is robust with respect to manufacturing variations. We seek an OK to proceed with finalizing mechanical design and fabrication documentation. L. Ristori - RFD Design Freeze - 15 March 2018

Scope and Deliverables • Dressed RFD Crab Cavity • Assembly: Bare Cavity + Magnetic Shields + Helium Tank + RF Ancillaries • Qualification at 2 K + Shipment to CERN • 10 Dressed RFD Crab Cavities • • Qualified at FNAL (in VTS at 2 K) Ready for integration in cryomodule (at CERN) (8) for tunnel installation (threshold KPP) – Need by: Summer-Fall 2023 (2) additional at later time (objective KPP) L. Ristori - RFD Design Freeze - 15 March 2018

Functional Requirements Specification RFD Dressed Crab Cavity US-Hi. Lumi-doc-294 § § § HL-LHC-AUP draft Draft in CERN EDMS (v. 0. 1) CERN WP 4 revision (v. 0. 5) CERN Other WP revision (v. 0. 9) Hi. Lumi LHC approval (v. 1. 0) L. Ristori - RFD Design Freeze - 15 March 2018

Functional Requirements US-Hi. Lumi-doc-294 L. Ristori - RFD Design Freeze - 15 March 2018

Upcoming Reviews § O 413. 3 b requires ”Team External to Project” to review design at Preliminary (CD-2) or Final (CD-3 b) level prior to DOE IPR. § RFD Cavities Preliminary Design Review and (partial) Final Design Review for raw materials § Date: June 20 th-21 st. Charges Issued § Review Team: Nassiri (ANL-Chair), Laxdal (TRIUMF), Olry (IPNO), Kim (SNS), Ginsburg (FNAL) L. Ristori - RFD Design Freeze - 15 March 2018

Upcoming Reviews - continued § Need CD-2/CD-3 ESAAB approval in Nov’ 18 or Dec’ 18 Meeting § CD-2/3 b approval must be “in the books” by Feb. ’ 19 to meet HL-LHC schedule § DOE IPR Review: Week of Sep 24 th – 28 th 2018 § Posting of documents for DOE IPR: Sep 10 th § Rehearsals for DOE IPR: Aug 13 th to Aug 24 th § FNAL Dir. Review: Week of Jul. 16 th-20 th 2018 § Posting of documents for Dir. Review: Jul 9 th § Rehearsals for Dir. Review: Jun 25 th to Jul. 6 th Color Code Green: External to AUP Red: Internal to AUP L. Ristori - RFD Design Freeze - 15 March 2018

Crab Cavity – Technical Progress § NEW Electro-Magnetic Design § Requirements on HOM impedance and power dissipation are addressed, Tolerance studies completed (Z. Li talk) § NEW Mechanical Design § Complete at a Preliminary Stage (M. Parise talk) § NEW Chemical Processing at ANL § Rotational BCP tool upgraded to accept RFD crab cavity. Successfully tested with water (bottom image) § Processing + Cold Test in April-May § Install HOMs and re-test June-July L. Ristori - RFD Design Freeze - 15 March 2018

Procurement of AUP Prototypes 2018 -2019 § Main goal of prototypes is to lead the path for production in 20202021 § Procurement will be set up as 2 + option of 12 units to ensure continuity at the same supplier § Material provided to cavity supplier: § RRR niobium sheets (available) § Nb-Ti discs (available) § Nb-SST brazed joints (construction imminent) § Documentation necessary for launching prototypes: § Functional drawing of bare cavity (FNAL drawing exists, see talk of M. Parise) § Fabrication specification, aka technical specification (FNAL document exists, based on CERN DQW call for tender) § Example of MIP with hold points (exists for CERN DQW, FNAL document being finalized for RFD, S. Andres) L. Ristori - RFD Design Freeze - 15 March 2018

Let’s start! L. Ristori - RFD Design Freeze - 15 March 2018