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Design Study “EDM”. NuPECC Meeting Edinburgh. October 10, 2014 | Hans Ströher (Forschungszentrum Jülich). Novel precision storage rings for Electric Dipole Moment searches. CP Violation by EDMs. Electric Dipole Moments violate P- and T- invariance. Spin. EDM. +. +. T. -. -.

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design study edm

Design Study “EDM”

NuPECC Meeting Edinburgh

  • October 10, 2014 | Hans Ströher (Forschungszentrum Jülich)
slide2

Novel precision storage rings

  • for Electric Dipole Moment searches
slide3

CP Violation by EDMs

Electric Dipole Moments violate P- and T-invariance

  • Spin
  • EDM

+

+

  • T

-

-

  • Original illustration by: physicsworld.com

Via CPT theorem, T-violation correspondstoCP-violation

slide4

Science Case

The matter-antimatter asymmetryoftheuniverse:

Whatweshouldsee: Whatweactuallysee:

equalamountofpredominantly matter

matter and antimatter almostno antimatter

  • Ratio
  • 1010 :1
  • Matter
  • Anti-
  • Matter

This isoneofthebigunsolvedproblems in physics !

slide5

Source(s) of EDMs

Multiple experimental inputisrequired …

… todisentanglethe fundamental source(s) of EDMs

slide6

Principle of EDM Search

Particlespinalignmentalongmomentum (frozenspin)

Radial E-field: torque on spin – rotation out of ring plane

slide7

Frozen Spin Technique

Left: a polarizedchargedparticle (beam) in a storage ring

  • Spin
  • Momentum
  • Proton:
  • „all-electric (E) ring“
  • magic momentum
  • Proton, Deuteron, 3He:
  • „all-in-one (E-B) ring“
  • variable momenta

Right: fixingthe horizontal spinalongthemomentumdirection

slide8

Project impact

EDM searchesaremust-doexperiments

The EDM Storage Ring will be a European flagshipproject!

  • Technology
  • New storage ring design
  • Beyondstate-of-the-art
  • equipment
  • Physics
  • Search fornewphysics
  • Matter/antimatter puzzle
  • Complementaryto LHC
  • Society
  • Capacitydevelopment (training, education)
  • International scientificcooperation
  • Cooperationwithhigh-techindustry
slide9

Design Study

WP6: Ring Layout

WP3:

Electrostatic

Deflectors

WP4:

Beam

Instrumentation

WP5:

Beam

Polarimetry

WP2: Dissemination ofresults

WP1: Consortium Management

slide10

Design Study

WP6: Ring Layout

Concept: useofclockwiseandcounter-clockwisebeams

(falseeffectssystematicerrors)

Proton: „all-electric ring“  onevacuumchamber

Proton, deuteron (3He): „E-B ring“  separate beams

slide11

Participants

  • 42 months, 2.8 M€ (personnel only)
  • Deliverable: CDR for storage ring
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