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Saturday Morning Physics - Accelerators. Accelerators What’s Up Now? What’s Up Next? <<<< We Are Here . Accelerators - What’s Up Next?. What Up Next? electrons and positrons : e + e - Colliding Beams protons and protons : pp Colliding Beams muons and muons : m + m - Colliding Beams

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saturday morning physics accelerators
Saturday Morning Physics - Accelerators
  • Accelerators
  • What’s Up Now?
  • What’s Up Next? <<<< We Are Here ...

David Finley / Fermilab Saturday Morning Physics

accelerators what s up next
Accelerators - What’s Up Next?
  • What Up Next?
    • electrons and positrons : e+e- Colliding Beams
    • protons and protons : pp Colliding Beams
    • muons and muons : m+ m- Colliding Beams
    • neutrino beam : From decaying muons
  • But first, a word about recent times ...

David Finley / Fermilab Saturday Morning Physics

recent times
Recent Times ...
  • Physics Today January 2001
    • Maury Tigner (Cornell University)
  • Comparing hadrons and leptons
    • Constituent hadron collision energy is about 1/10 of total hadron beam energies
    • Constituent lepton collision energy is all of total lepton beam energies
  • Leveling off? … yes … why?
    • It’s a fact of life if you keep using the same concepts and evolve with the same basic technology

Constituent Collision Energy (GeV)

1970

2010

David Finley / Fermilab Saturday Morning Physics

Year of Collisions

e e linear colliders
e+e- Linear Colliders
  • The good new is:
    • The electron is a lepton
      • A point (so far as we can see)
      • Simple particles give simpler interactions
    • Precision tool (if you know where to look)
        • Q4: How is it that we see more matter than antimatter?
        • Q2: How does it all behave?
  • The bad new is:
    • Not much mass …
      • radiates photons like crazy when you deflect them

David Finley / Fermilab Saturday Morning Physics

nlc is an e e option

NLC = Next Linear Collider

NLC is an e+e- option
  • Insert NLC Stick diagram from Word File

David Finley / Fermilab Saturday Morning Physics

schematic of nlc rf test

NLC RF Test = ETF

Schematic of NLC RF Test

Fermilab is developing a plan for performing this test in a recycled fixed target beam enclosure …

see next slides

David Finley / Fermilab Saturday Morning Physics

a tunnel for an nlc rf test
A Tunnel for an NLC RF Test

The ETF ceclosure is mostly empty now … and that is good!

David Finley / Fermilab Saturday Morning Physics

and building for an nlc rf test
And Building for an NLC RF Test

The MP9 building is now being used to make parts of the CMS detector for the LHC …

but it can be reused for the ETF.

David Finley / Fermilab Saturday Morning Physics

1 8 meter long nlc rf structure
1.8 meter long NLC RF structure

Made by the KEK lab in Japan and tested at the SLAC lab in California

Each structure has 206 disks … see next slide

David Finley / Fermilab Saturday Morning Physics

nlc rf copper disks
NLC RF copper disks

Each disk has a 61 mm diameter and 8 mm thickness.

The electron or positron beam goes through the center hole and unwanted energy is taken away in the four side channels.

David Finley / Fermilab Saturday Morning Physics

nlc permanent magnet
NLC Permanent Magnet
  • Insert Shunt Quad on SSW stand by Volk

David Finley / Fermilab Saturday Morning Physics

tesla at desy is also an e e option

TESLA = TeV Electron Superconducting Linear Accelerator

TESLA at DESY is also an e+e- Option

The DESY lab is proposing an e+e- collider.

The accelerator is made of superconducting rf cavities.

The tunnel is about 6 meters in diameter.

David Finley / Fermilab Saturday Morning Physics

protons on protons
Protons on protons
  • The good news is:
    • We know how to do this … standard techniques
    • This gives us the energy frontier
    • This is the path to discovery
        • Q1: What’s it all made of?
        • Q2: How does it all behave?
  • The bad news is:
    • Continuing the standard approach costs too much

David Finley / Fermilab Saturday Morning Physics

lhc ir quadrupole magnet cold mass only
LHC IR Quadrupole MagnetCold Mass Only

Insert P. Schlabach’s Slide … ASC 18 Sep 2000 … Slide 3

David Finley / Fermilab Saturday Morning Physics

lhc ir quadrupole magnet
LHC IR Quadrupole Magnet

This quadrupole magnet is 36 inches in diameter and about 7 meters long

Fermilab is making several high gradient quadrupole magnets for the Interaction Regions at the LHC

David Finley / Fermilab Saturday Morning Physics

vlhc low field option
VLHC - Low Field Option

G.W. Foster and V. Kashikhin

May 2000

David Finley / Fermilab Saturday Morning Physics

vlhc low field option1
VLHC - Low Field Option

G.W. Foster and V. Kashikhin

May 2000

David Finley / Fermilab Saturday Morning Physics

vlhc low field option2
VLHC - Low Field Option

G.W. Foster and V. Kashikhin

May 2000

David Finley / Fermilab Saturday Morning Physics

a tunnel vision for the vlhc
A Tunnel Vision for the VLHC

The high and low field are shown in the LEP tunnel as an example.

The low field is on the bottom, the high field is on the top.

The tunnel is real and is about 12 feet in diameter.

David Finley / Fermilab Saturday Morning Physics

slide20
Insert Ernie’s “Comments on a … vlhc”

David Finley / Fermilab Saturday Morning Physics

slide21
Insert Ernie’s “500 km pipetron map study”

David Finley / Fermilab Saturday Morning Physics

muons on muons
Muons on muons
  • The good news is:
    • Just another simple lepton … just like the electron
    • But heavier than the electron
      • They don’t radiate photons like crazy
      • They interact better (40,000 times better) with Higgs
        • Q3: How do particles come by their mass?
  • The bad new is:
    • They only stay around for 0.000 002 seconds (or so)
    • They spit out electrons … which then radiate like crazy

David Finley / Fermilab Saturday Morning Physics

slide23
Insert Muon Collider Schematic from Word

David Finley / Fermilab Saturday Morning Physics

neutrino beam
Neutrino Beam
  • The good new is:
    • All the muons decay to electrons and neutrinos
    • Never been done … surprises probably in store
        • Q1, Q2, Q3, Q4, Q4++
  • The bad news is:
      • Not discovery, not simple … So, maybe not “interesting”?
  • Aside: Really global-sized experiments

David Finley / Fermilab Saturday Morning Physics

slide25
Insert DF slide with “NF at Fermilab”

David Finley / Fermilab Saturday Morning Physics

slide26
Insert MuSR FESS Slide with Geology

David Finley / Fermilab Saturday Morning Physics

slide27
Insert Geer L/E and other Physics Guidance

David Finley / Fermilab Saturday Morning Physics

and into the beyond
And Into the Beyond ...
  • The good new and the bad new is:
    • Hasn’t been done before …
    • For good reasons, usually ...
  • One example is Plasma acceleration
    • 100 TeV center of mass … and ...
    • All the equipment fits on the Fermilab site
    • But is costs too much to operate …
    • At least … using today’s technology

David Finley / Fermilab Saturday Morning Physics

slide29
Insert Linda’s “Plasma acceleration”

David Finley / Fermilab Saturday Morning Physics

a0 photoinjector at fermilab
A0 Photoinjector at Fermilab

RF Gun and focussing solenoids

http://www-ap.fnal.gov/A0PI/a0pics.html

David Finley / Fermilab Saturday Morning Physics

a0 photoinjector at fermilab1
A0 Photoinjector at Fermilab

Spectrometer magnets, plasma chamber, and beam dump

http://www-ap.fnal.gov/A0PI/a0pics.html

David Finley / Fermilab Saturday Morning Physics

summary
Summary
  • This is still fun.
    • Q1: So what IS it all made of? and
    • Q2: How DOES it all behave? etc etc
  • There is still lots to do.
    • Decades (in performance and on calendars)
    • The best ideas are yet to come ...

David Finley / Fermilab Saturday Morning Physics

behind the
Behind the ...

www.fnal.gov (not likely on www.VH1.com)

Fermilab Accelerators

SCIENCE

SHOW AIRS: SAT 3/31 at 9am CT

Your Host: David Finley

finley@fnal.gov

David Finley / Fermilab Saturday Morning Physics

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