Fermilab High Intensity Neutrino Source R&D Program - Mission, Status, Plans, and Support Needs - For AD Department Heads March 2007 Bob Webber

Fermilab High Intensity Neutrino Source R&D The Mission –We have been tasked by the Directorate, since nearly two years ago, to assemble and operate with beam the front-end of the Proton Driver linac in Meson Detector Building by the end of 2010.

Fermilab β=1 Modulator β=1 Modulator 36 Cavites / Klystron TESLA LINAC 8 Klystrons 288 Cavities in 36 Cryomodules 1300 MHz β=1 β<1 TESLA LINAC 2 Klystrons 96 Elliptical Cavities 12 Cryomodules 1300 MHz GeV β=1 Modulator β=1 Modulator β=1 Modulator β=1 Modulator β=1 Modulator β=1 Modulator 10 MW TESLA Multi-Beam Klystrons 48 Cavites / Klystron β=.81 Modulator β=.81 8 Cavites / Cryomodule 0.5 MW Initial 8 GeV Linac 11 Klystrons (2 types) 449 Cavities 51 Cryomodules “PULSED RIA” Front End Linac 325 MHz MeV H-RFQMEBTRTSRSSRDSR Single 3 MW JPARC Klystron Multi-Cavity Fanout at kW/cavity Phase and Amplitude Control w/ Ferrite Tuners DSR β=.47 Modulator β=.47β=.61 or… 325 MHz Spoke Resonators Elliptical Option Modulator 10 MW TESLA Klystrons 80 % of the Cost ~80 % of the Engineering & Technical System Complexity

Fermilab Following Orbach’s ILC Timeline Comments Re-invigorated interest in the Director’s Office in Proton Driver ‘synergies’ with ILC and other ideas Director’s statement that he would seek to build 6 GeV section of ILC Establishment of steering group under Young-Kee Kim “to generate strategic plan for accelerator effort” Immediate impact on HINS/PD effort –None on HINS Meson R&D mission –Start (actually revival of) discussions on possibility of using 6 GeV section of ILC as the high energy end of an 8 GeV Proton Driver Don’t you simply add on the front 2 GeV? Are we expected to fit three times the RF power into the ILC physical geometry?

Fermilab From Director’s 3/9/07 ILC Fest Talk

Fermilab A Possible Outcome From Director’s 3/9/07 ILC Fest Talk Here we are, although the mission is actually 60 MeV and FY07/FY08 funding is actually $2.2/2.8M M&S

Fermilab HINS R&D Facilities Plan To address accelerator physics questions for a new concept, low-energy superconducting Linac we will construct key components of this Linac and integrate them into a demonstration accelerator in Meson Detector Building Pulsed 2.5 MW, 325 MHz klystron RF power source 325 MHz high power RF component test facility for studying RF power control devices Test stand for 325 MHz RT cavities and a test cryostat for 325 MHz SC spoke cavities Ion source and RFQ as a 2.5 MeV beam source 10 MeV Room Temperature Linac Three 325 MHz SC spoke cavity cryomodules All accelerator sections to be operated with beam up to 60 MeV to verify and quantify performance This all adds up to building and operating a first-of-its-kind superconducting 60 MeV H- linac

Fermilab 325 MHz Front-End Linac 325 MHz Klystron – Toshiba E3740A (JPARC) 115kV Pulse Transformer Modulator Capacitor / Switch / Bouncer Charging Supply RFQ MEBT SCRF Spoke Resonator Cryomodules RF Distribution Waveguide Ferrite Tuners Single Klystron Feeds SCRF Linac to E > 100 MeV

Fermilab Layout Through Second β=.4 Cryostat Ion SourceRFQMEBTRoom Temperature 16-Cavity, 16 SC Solenoid Section One Β=0.4 SSR 11-Cavity, 6-Solenoid Cryostat Two Β=0.2 SSR 9-Cavity, 9-Solenoid Cryostats 2.5 MeV50 KeV 10 MeV 20 MeV 60 MeV 30 MeV

Fermilab HINS Floor Plan in Meson Detector Building RF Component Test Facility Ion Source and RFQ Area 150 ft. Cavity Test Cave 60 MeV Linac Cave Klystron and Modulator Area Existing CC2 Cave ILC HTC Cave

Fermilab Klystron and Waveguide Installation

Fermilab Modulator Pulse Transformer Klystron Modulator and Pulse Transformer Modulator Signals at 5.6 KV into Resistive Load February 2, 2007 Modulator Output Current 200A/div Bouncer Voltage Capacitor Bank Voltage at 5.6 KV Pulse Transformer Output Current 2A/div at 36A

Fermilab RF Component Test Area Cage

Fermilab Electronics Installed Klystron solenoid power supplies Klystron and modulator interlocks Control system timing crate Personnel safety interlocks

Fermilab HINS Room Temp Cavity in Production Brazed cavity before welding end walls Body wall roughed in and annealed. Cavity in concept Copper spokes rough machined and annealed

Fermilab Bead Pull thru Completed RT CH-01 Relative field amplitudes Blue – measured Red - predicted View thru RF drive port during bead pull

Fermilab Superconducting Cavity Fabrication

Fermilab Quick Status 2.5 MW, 325 MHz modulator/klystron system is installed –Modulator is commissioned –Klystron commissioning planned to commence on April 2 Fast ferrite vector modulators await RF power testing Ion source work is proceeding on 50 KeV sources, both H+ and H- sources 2.5 MeV RFQ is in fabrication, delivery expected end of summer First Room Temperature spoke cavity will be ready for power testing in a few weeks Two superconducting spoke cavities are now in fabrication, delivery of first expected in April Prototype superconducting solenoid is built and final design is progressing Cryostat for SC cavity testing is in design review

Fermilab Recent AD HINS Effort

Fermilab Recent AD HINS Effort

Fermilab HINS Near-Term Schedule Goals in MDB 325 MHz RF power system commissioning –Commence in two weeks Component testing in RF test area –Awaiting RF power system commissioning First room-temp cavity full power tests –Late April / Early May Design and construct fenced ion source / RFQ area and move 50 KeV proton source from MS-6 to MDB –By mid-summer, i.e. before end of summer accelerator shutdown Procure and install RF power distribution system to RFQ area –By mid-summer, i.e. before end of summer accelerator shutdown Install RFQ and commission –Operate RFQ at full RF power by mid-September 2007 –2.5 MeV beam before end of calendar year 2007

Fermilab Tasks Required for Near-Term Objectives Water –Install new pump on existing skid –Install water to ion source/RFQ –Develop design specs for new skid with higher flow capacity Mechanical –Install coax transmission lines to cavity test cave –Construct ion source/RFQ area fencing –Support ion source installation in MDB –Design/Install RF distribution components to RFQ Vacuum –Establish vacuum system for room temp cavity testing in cave –Design/install vacuum system (with Piekarz et al.) for ion source/RFQ EE –Deliver ~ 6 regulated power supplies for ferrite vector modulators (testing and RFQ) –Engineering for global solenoid, steering, and FVM power system design –Charging supply

Fermilab Tasks Required for Near-Term Objectives Controls –Provide interface with” ILC Controls” so we aim for common methods –Continued/enhanced daily controls support –EPICs database management and entry –EPICS applications –New timing system rate generator hardware RF –Provide/commission initial LLRF system Cryo –Support TD with test cryostat cryogenics system issues –Install cryo transfer lines into cavity test cave –Support TD with accelerator spoke cavity cryostat and interface design to understand Linac enclosure cryo physical requirements/features Instrumentation –Supply Semenov digitizer boards

Fermilab HINS R&D Objectives Superconducting cavity test cryostat installation and operation Linac cave design, construction, and utilities Demonstration of independent RF amplitude & phase control of multiple Room Temperature cavities on single klystron Room temperature Linac installation 10 MeV operation Ready to install SC cavity cryostat(s) and high energy beam transport in Linac cave in 2010

Fermilab Tasks Required for Objectives Water –Install new skid –Install water to Linac cave Mechanical –Install coax transmission lines to room temp section of Linac cave –Install room temp Linac beam line and components Vacuum –Install vacuum system for room temp Linac EE –Complete engineering design for global solenoid, steering, and FVM power system –Deliver ~ 40 power supplies for ferrite vector modulators –Install/commission power system for room temperature Linac components –Deliver final klystron charging supply –Vacuum controls

Fermilab Tasks Required for Objectives Controls –Provide interface with” ILC Controls” so we aim for common methods –Continued/enhanced daily controls support –EPICs database management and entry –EPICS applications –Hardware support RF –Provide/commission multi-cavity LLRF system Cryo –Support TD with test cryostat cryogenics system issues –Install cryo transfer lines into cavity test cave –Support TD with accelerator spoke cavity cryostat and interface design to understand Linac enclosure cryo physical requirements/features –Completer Linac cave cryo system design Instrumentation –Specification/design/engineering/procurement of room temp Linac beam instrumentation –Suppy/install room temp Linac beam instrumentation

Fermilab Conclusion A program to address key accelerator physics and technology questions of a new concept, low-energy superconducting Linac is actively being pursued The present mission is to assemble a ~60 MeV front- end demonstration including three superconducting cavity cryomodules by 2010 Facilities are being out-fitted now 325 MHz RF power will soon be available Copper and Superconducting cavity design and first article fabrication is well underway Plan to have 2.5 MeV beam from RFQ by end of 2007 Increased AD support is needed to stay on track for coming year objectives