The Neutrino Factory and Muon Collider Collaboration R&D Program and Participation in the IDS

The Neutrino Factory and Muon Collider Collaboration

R&D Programand

Participation in the IDS

Alan Bross UKNF Meeting January 10, 2007 2

NFMCC Mission

Extensive experimental program to verify the theoretical and simulation predictions

To study and develop the theoretical tools, the software simulation tools, and to carry out R&D on the hardware that is unique to the design of Neutrino Factories and Muon Colliders


Current Organization

R&D Tasks

DOE/NSF

Laboratories/MCOGP. Bond, S. Holmes, J. Siegrist

MUTACR. Kephart

CollaborationSpokespersonsA. Bross, H. Kirk

ProjectManager

M. Zisman

Simul. COOL Target MICE

ExecutiveBoard

TechnicalBoard

Collaborating Institutions

Neutrino Factory and Muon Collider Collaboration (NFMCC)

Other


Collaborating Institutions

National LabsArgonne

BNLFermilab

LBNLOak Ridge

Thomas Jefferson

UniversitiesColumbiaCornell

IITIndiana

Michigan StateNorthern Illinois

PrincetonUC-Berkeley

UC-DavisUC-Los Angeles

UC-RiversideUniversity of

Chicago

National LabsBudkerDESYINFN

JINR, DubnaKEKRAL

TRIUMF

UniversitiesKarlsruhe

Imperial CollegeLancaster

OsakaOxfordPohangTel Aviv

US International

Corporate PartnersMuons Inc.

Tech-X Corporation


Core Program

Targetry R&D: Mercury Intense Target Experiment (MERIT)

Spokesperson: Kirk McDonaldProject Manager: Harold Kirk

Ionization Cooling R&D: MuCool and MICEMuCool Spokesperson: Alan BrossUS MICE Leader: Dan Kaplan

Simulations & TheoryCoordinator: Rick Fernow

Muon Collider Task Force*

*Being organized now @ Fermilab

Hardware Activities

MuCool


MuCool Program

Currently consists of 9 institutions from the US and Japan

RF DevelopmentANLFermilabIITJLABLBNLMississippi

Absorber R&DFermilabIITKEKNIUMississippiOsaka

SolenoidsLBNLMississippi

Mission Design, prototype and test all cooling channel components

(SFOFO) 201 MHz RF Cavities, absorbers, SC solenoids

Support MICE (cooling demonstration experiment) Perform high beam-power engineering test of cooling

section components


R&D Focus of MuCool Component testing Fermilab

RF Cavities– High RF-power Testing

Absorbers– Technology tests– High power-load testing

•With beam Magnets


MuCool Test Area

Facility to test all components of cooling channel (not a test of ionization cooling)

At high beam power Designed to accommodate full Linac Beam 1.6 X 1013

p/pulse @15 Hz – 2.4 X 1014 p/s

– 600 W into 35 cm LH2 absorber @ 400 MeV

RF power from Linac (201 and 805 MHz test stands)

Waveguides pipe power to MTA


MTA

The MTA is the focus of our Activities

RF testing (805 and 201 MHz)

High pressure H2 gas-filled RF

LH2 Absorber tests

Two parts of infrastructure yet to be completed

Cryo Plant Beam Line


MTA Hall


MTA Hall Instrumentation

805

201

CsI

Plastic Scintillator

Magnet

Chipmunk


Phase I of RF Cavity Closed Cell Magnetic Field Studies (805 MHz)

Data seem to follow universal curve

Max stable gradient degrades quickly with B field

Sparking limits max gradient

Copper surfaces the problem

Gra

die

nt

in M

V/m

Peak Magnetic Field in T at the Window


Phase II of 805 MHz studies

Study breakdown and dark current characteristics as function of gradient and applied B field in Pillbox cavity

Curved Be window Test TiN coated Cavity has been

conditioned to 32MV/m without B field

Measurements at 2.5T– Stable gradient

limited < 17MV/m Button test

Evaluate various materials and coatings

– TiN, ALD– W,Cu,Mo,SS,..

Quick Change over


New 805 MHz RF data

Recent repeat of Max Grad with B

No conditioning observed


805 MHz Imaging


RF R&D – 201 MHz Cavity Design

The 201 MHz Cavity is now operating Reached 16MV/m at B=0 (design gradient!)


X-ray rates From 201 MHz Cavity

1.00E+03

1.00E+04

1.00E+05

1.00E+06

1.00E+07

0 2 4 6 8 10 12

B=0


201 Program

Conditioning 201 Cavity through multipacting

Observed at very low field This is now ready to begin Configuration shown to right

Allows for approximately 2T on axis at window facing magnet

Magnet operating in solenoid mode at 5T (max)

Field falls off rapidly in both r and z

We have also full azimuthal coverage to measure x-ray rates

Thin and totally absorbing plastic scintillator counters

Spectroscopy - NaI


High Pressure H2 Filled Cavity WorkMuon’s Inc

High Pressure Test Cell Study breakdown

properties of materials in H2

Just finished run in B field No degradation in M.S.G.

up to 3.5T


2D Transverse Cooling

and Figure of merit: M=LRdE/ds

M2 (4D cooling) for different absorbers

Absorber Design Issues

Absorber Accelerator

Momentum loss is opposite to motion, p, p x , p y , E decrease

Momentum gain is purely longitudinal

Large emittance

Small emittance

H2 is clearly Best -Neglecting Engineering

Issues Windows, Safety


Convective Absorber Activities

First Round of studies of the KEK absorber performed in the MTA

GHe used to input power


Convective Absorber Activities II


Convective Absorber Activities III

Next Round of tests will use a modified absorber

Test Electrical Heater New

Temperature sensors

LH liquid level sensor

Absorber Body being modified in Lab 6 at Fermilab

Instrumentation will be usedin MICE


LiH Test Program

Produce encapsulating cast (not pressed) samples Small disk (5-10 cm) for intense radiation

exposure Look at Material stability primarily Temperature Profile

Large disk (30 cm) for detailed thermal conductivity studies

External Cooling + Internal Heating Potential absorber for MICE Phase I

– Non-instrumented, no cooling

MICE


Muon Ionization Cooling Experiment

MICE

Beam Diffuser

FocusCoils

LiquidHydrogenAbsorbers

RFCavities

Tracking Spectrometers

MatchingCoils

Radiation shield

Magneticshield

CouplingCoils


US MICE

Tracker Module Solenoids Fiber ribbons VLPC System

VLPCs, Cryostats and cryo-support equipment, AFEIIt (front-end readout board), VME memory modules, power supplies, cables, etc

Absorber Focus Coil Module LH2 and vacuum safety windows

Fabrication and QC

RF Module Coupling Coils RF Cavities

Particle ID Upstream Cerenkov


MuCool and MICE

MuCool Collaboration interface to MICE Design Optimization/develop of Study II cooling channel

Simulations Detailed engineering

Full component design Systems integration Safety

RF cavity development, fabrication, and test 201 MHz operation in B field

Absorber development, fabrication, and test Ends with KEK prototype tests

MuCool will prototype and test cooling hardware including MICE pieces for which the collaboration is responsible

MERIT


MERIT –Mercury Intense Target

Test of Hg-Jet target in magnetic field (15T) Submitted to CERN April, 2004 (approved April 2005) Located in TT2A tunnel to ISR, in nTOF beam line First beam ∼Summer, 2007

Test 50 Hz operation at 24 GeV 4 MW


34

nozzle A before reaming

ORNL 2006 Nov 28 runs10 m/s

ORNL 2006 Nov 29 run, uprighted image Nozzle C 20 m/s

Movies of viewport #2, SMD camera, 0.1 ms/frame

nozzle A after reaming


Merit Instrumentation

Developed Full Mars Simulation

Particle fluxes, energy deposition, absorbed dose and residual activity in the experimental hall

Absorbed dose and activation of mercury system

Secondary particle production

Study/define diagnostics needed for experiment

Radiation load in components

Radiation shielding Particle production in

secondary beam

Design and Simulation


Design and Simulation -Some Specific Areas of Study

beam Drift Buncher

Rotator

Cooler

Overview of transport

Cool here

Capture/Bunch/Rotation/Cool

TimeTime

E

ner

gy

En

erg

yTwo fixed point acceleration: half synchrotron oscillation + path between fixed points

Linear nonscaling Linear nonscaling FFAGFFAG

H2 filled cavities


Design and Simulation - Acceleration

Dogbone RLA - footprint

-5000

-3000

-1000

1000

3000

5000

-15000 -10000 -5000 0 5000 10000 15000 20000 25000 30000 35000

z [cm]

x [cm]


NF Detector - Design and Simulation

Looking at Totally-Active Sampling Detector Scintillator Based

Magnetized 0.5T


Totally Active Segmented Detector

Simulation of a Totally Active Scintillating Detector (TASD) using Noa and Minera concepts with Geant4

3 cm

1.5 cm15 m

15 m

15

m

100 m

3333 Modules (X and Y plane) Each plane contains 1000 slabs Total: 6.7M channels

Momenta between 100 MeV/c to 15 GeV/c Magnetic field considered: 0.5 T Reconstructed position resolution ~ 4.5 mm


TASD Performance

Muon reconstructed efficiency Muon charge mis-ID rate


Large Magnetic Volumes

Possible magnet schemes

Steel

15 m x 15 m x 15m solenoid modules; B = 0.5 T

Magnet

Superconducting coil magnet cost extrapolation formulas:• Use stored energy – 14M$/module• Use magnetic volume – 60M$/module• GEM magnet extrapolation – 69 M$/module

x10 modules!

Warm coil magnets:• Total cost: $5m x 10 = $50M (.1-.2T)• Problem: operational cost (>$13M/year with factor of 3 uncertainty)


Large Magnetic Volumes II

Cost Driver is not stored energy Vacuum Loading for vacuum insulated cryostats (A. Herve, CERN)

P0 = 0.33 S0.8 (Price of equivalent zero energy) P = P0 + 0.17 E0.7 (Total Price of magnet)

S = Surface of the cryostat V = Mean magnetized volume E = Stored energy

Must get rid of vacuum loading Foam Insulated

High Tc SC

SC “Pipe”

SC Pipe?


Back to the Future - VLHC

Fermilab TM-2149 (2001)

SC Transmission Line

3”

45

Magnetic cavern design

1 m iron wall thickness.

~2.4 T peak field in the iron.

46

|B| in XZ cross-section

Without iron With iron

Better field uniformity with iron in the end sections

47

Parameters

DESIGN PARAMETER UNIT No iron With iron

Isolenoid MA 7.5 Nturns/solenoid 150 Iturn kA 50 |B|average in XZ T 0.562 0.579 Wtotal GJ 3.83 3.95 Ltotal H 3.06 3.16 Fr maximum kN/m 15.66 15.67 Fx maximum kN/m 48.05 39.57

$1000/m $50M

100 kA op demonstrated

48

US – NFMCC 5 Year Budget Plan

Note: The Advanced Accelerator R&D Sub-panel recommended that a doubling of our funds would be appropriate. Our Muon Technical Advisory Council recommended a similar scenario

For FY07 - DOE has asked what we would do with additional fundsif a +10% or +20% budget increase were forthcoming. This is on thetotal including base ($3.6M)

Base Program funds: remain as in FY06: BNL ($0.9M); Fermilab ($0.6M); LBNL ($0.3M)


NFMCC Participation in the IDS

Areas of Interest Proton Driver

BNL, Fermilab Targetry

BNL, Fermilab, Princeton Capture and phase rotation

Fermilab Cooling

BNL, Fermilab, IIT, LBNL, UCLA, UC Riverside Acceleration

BNL, Fermilab, TJNL Detector Design and Simulation

Fermilab, IIT, University of Mississippi

Our level of effort, however, will depend on our budget in the out years. But there is some reason to be optimistic

Documents

The Neutrino Factory and Muon Collider Collaboration R&D Program and Participation in the IDS