Project X &

Summary / Future Collaboration

Bob KephartANL-FNAL Collaboration Meeting

June 7, 2010

Introduction

• SRF is an enabling technology envisioned for use in many new applications of interest to the Office of Science– International Linear Collider, Project X, a Muon Collider– Rare isotope accelerators, Lights Sources, ERL’s– ADS, Accelerators for national security and medicine, etc

• ANL has many years of experience with SRF related to the construction and upgrades of ATLAS– Also plans for various other SRF based projects

• FNAL has been building a powerful SRF capability in support of ILC R&D and Project X

• Collaboration on SRF via the joint processing facility was natural and very successful (Mike’s talk)

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ILC R&D

• The joint facility is now contributing data towards the ILC quest for high gradient (35 MV/M) cavities!

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Red circle = ANL/FNAL

ILC goal

4 of 14 cavities > 34 MV/M were processed at ANL

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ILC R&D

• But… Cavity yield > 35 MV/ M is still < 50% – Mechanisms limiting yield not fully understood

• Both labs and University of Chicago work closely on R&D to understand SRF materials and surfaces. – Lance Cooley described this effort.– Also a successful collaboration in that the whole is

more than the sum of the parts

• In this talk I will describe briefly FNAL’s plan for Project X with an emphasis on the SRF component

• Finish with possible areas for future collaboration.

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Project X: What is it?

• A new multi-MW Proton Source under development at Fermilab. • Enables a world-class Long Baseline Neutrino Experiment

(LBNE) via a new beam line pointed to DUSEL in Lead, SD• Enables a broad suite of rare decay experiments Several versions of this machine have been examined• All versions provided 2 MW of beam power to LBNE • Favored version (ICD-2) employs a 3 GeV 1 ma CW linac

– Provides an additional 2 MW to the high intensity program • Very flexible beam manipulation via RF separators

– 3-8 GeV = either a pulsed linac or a rapid cycling synchrotron.

Project X website: http://projectx.fnal.gov/Page 5

Project X

Stripping foil

3 GeV CW SRF Linac1 ma H- or Protons

RecyclerLinac: 1 mA x 5 ms @ 10 Hz

5 pulses per fill

Main Injector1.4 Sec cycle

LBNE (2 MW)120 GeV Fast extraction1.6 x 10 14 Protons / 1.4

sec

3 GeV High Intensity Program (2.8 MW)

Single turn transferAt 8 GeV

3 8 GeV Pulsed Linac

(or RCS)

3-8 GeV linac would be 1300 MHz pulsed retains synergy with ILC R&D but long pulse R&D needed

8 GeV fast spill (200 KW)2.2 x 10 14 Protons / 1.4 sec

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Project X Linac’s

• Design based on 3 families of 325 MHz Spoke resonators, two families of 650 MHz elliptical cavities, then 1300 MHz ILC cavities

Note: 650 MHz, b=0.9, 5-cell cavities are same physical length as 1300 MHz, b=1.0, 9-cell cavities so cryomodules are similar

SSR0 SSR1 SSR2 β=0.6 β=0.9

325 MHz, 2.5-160 MeV 650 MHz, 0.16-2 GeV

ILC

1.3 GHz2-3 GeV

MEBT

Ion source, RFQ

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Summary of PX 3 GeV CW linac

Section Freq EnergyMeV

Number of cav/magn/CM

Type of

SSR0 (bG=0.11) 325 2.5-10 26/26/ 1 Single spoke cavity, Solenoid

SSR1 (bG=0.22) 325 10-32 18 / 18/ 2 Single spoke cavity, Solenoid

SSR2 (bG=0.4) 325 32-160 44 / 24 / 4 Single spoke cavity, Solenoid

LB 650 (bG=0.61)

650 160-520 42 / 21 / 7 5cell cavity, doublet

HB 650 (bG=0.9)

650 520-2000 96 / 12 / 12

5cell cavity, doublet

ILC 1.3 1300 2000-3000

64 / 8 / 8 9-cell cavity, quad

290 Cavities, 34 cryomodulesPage 8

Summary of PX 3-8 GeV pulsed linac

Section Freq EnergyMeV

Number of cav/magn/CM

Type of

ILC 1.3 1300 3000-8000

400 / 25 / 25

9-cell cavity, quad

400 Cavities, 25 cryomodules

• Gradient ~ 25 MV/m

• 1 mA 5 ms beam pulse @ 20 Hz (Upgradeable to CW)

• Construction of Project X would substantially contribute to U.S. industrialization of SRF for ILC

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Integrated ILC/PX SRF Plan (Cryomodules)

Assemble Commission & Operate

InstallProcess & VTS

Dress & HTS

Design Procure

U.S. Fiscal Year

1.3 GHz CM1 (Type III+)

CM2 (Type III+) sw ap

CM3 (Type IV)2/3 CM

CM4 (Type IV) sw ap

CM5 (Type IV) sw ap

CM6 (Type IV+) CW Design

NML Extension Building Construction

NML Beam

CMTF Building

650 MHz Single Cell Design & Prototype

Five Cell Design & Prototype

CM650_1

325 MHzSSR0/SSR2 Design & Prototype

SSR1 Cavities in Fabrication (14)

CM325_1

Procurement (already in progress) Process & VTS/Dress/HTS

Design Procure 325 CM Parts 325 CM Ass'y

Design Order 650 Cav & CM Parts

Process & VTS/Dress/HTS

650 CM Ass'y

Design (RF & Mechanical) all varieties of Spoke Reonators

Prototype (as required)

Process & Test(as required)

Install in CMTF

Design

Move injector/install beam components

Beam Available to RF Unit test except during installation periods (contingent upon cryogenic load/capacity)

Design Construction

Design CM1.3 GHz CW

Design Order Cav & CM Parts

FY14 FY15

Operate Complete RF

Unit @ Design Parameters

Omnibus Delay

CM Ass'y Install CM CM Test

Process & VTS/Dress/HTS CM Ass'y

2008 FY09 FY10 FY11 FY12 FY13

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Final Assembly

HTSVTS

String Assembly MP9 Clean Room

VTS

1st U.S. built ILC/PX Cryomodule

Dressed Cavities (7)

Cavity tuning machine

New FNAL SRF infrastructure

VTS 2-3Civil

construction

VTS 1Tests Thermometry

SRF Progress

325 MHz spoke

resonator

FNAL S1 global Cavities @ KEK

NMLILC and PX test bed

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Progress at NML

1st Cryomodule

installed Large Vacuum Pump

Control Room He Refrigerator

CM Feed Can

Capture Cavity II @ NML

Operating at 2K Page 13

New buildings and Refrigerator (ARRA)

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Opportunities for Future Collaboration

• Continued R&D towards national goal of high gradient cavities for ILC (operation of joint EP processing facility at ANL, testing at FNAL)

• Project X R&D and eventual construction– 1300 MHz cavity processing (overlaps with ILC R&D)– 650 MHz cavity processing (new EP rig at ANL)– Spoke resonator cavity and cryomodule design and

construction (CM similar to ATLAS upgrade ?) – Processing of spoke resonators ?

• Continued SRF surface and materials R&D– Cost reduction R&D: Atomic Layer deposition,,

multi-layer cavities, hydro-formed cavities, tumbled cavities, Chemical Mechanical Polish, etc

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Summary• ANL-FNAL Collaboration on SRF has been successful• Cooperative work on 3.9 GHz cavities for DESY and spoke

resonators have yielded world class results• The joint cavity processing facility is operational and

producing cavities with world class performance• Many pieces of the new FNAL SRF infrastructure are

operational and in use, lots more is under construction• The ANL-FNAL-U of C collaboration on SRF materials and

surfaces is functional and adding to the world’s understanding of SRF surfaces– Better than any single institution could have managed on its own– Opportunities for real break thru’s (ALD, CMP, hydro-form, etc)– Lots of good ideas..limits are simply $ and people

• Many opportunities for future collaboration on Project X and other future SRF projects ( e.g. ADS !!!)

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