Linear Collider Project and Detector Concept Study. Akiya Miyamoto KEK September, 2004. Contents. International Linear Collider Physics Goals International activity: GDI A plan of the global experimantal program Detector concept study Detector requirements “Huge” detector. e. e.
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dRole of e+e- Colliders
e+e- coliders have been and will be crucial to establish a new principle ( Lagrangian for elementary particles )
( Asia, N.A., Europe)
Wold Wide Study
and released recommendation in Aug. 2004.
ITRP recommends the cold technology
The project is now called ILC
and the host of the central team will be setup.
1. Ensure that at least two different detector concepts are developed;
by worldwide teams which will:
- prepare CDR(s) on concepts, by ~2006;
- be ready to form the cores of the collaborations when funding
is in place and bids are called for.
2. Encourage and coordinate inter-regional R&D on essential detector
technologies, and give peer-reviewed recognition to nationally funded R&D programmes as part of the worldwide project.
3. Make sure that vital questions of machine-detector interface and
beamline instrumentation are as fully supported as accelerator
and detector R&D. This will involve close links with the GDI
Request inputs from the teams studying each detector concept, ensure the same costing basis, and edit into a single document to be included with the accelerator CDR. Then the panel will stand down.
Maintain a register of relevant R&D, identify vital or missing activities, arrange for peer review of proposals, and endorse approved programs to funding agencies when requested. This panel will stand down when the detector proposals are finalized.
Liaise with GDI to coordinate MDI issues between accelerator and experimental teams, and ensure that essential MDI R&D is done. The panel will stand down when the global lab takes over this role.
WWS Organizing Committee proposes to:
GLC 3T model
(There are many other issues such as Energy spread, crossing angle, etc. )
There are some room to improve detector design to best fit the Cold Machine
The momentum resolution at lower energies is determined
by multiple scattering
B=0Figure of merit : Calorimeter
Good charged track separation in a jet at the inner surface of the calorimeter
large n with thin material, small number of low momentum curling tracks
large BR2 √n
small ΔV/Vfor constant ΔV
large BR2 , larger R
We call “Huge” but it is still smaller than CMS at LHC
Goal of magnetic field
(Pb(Fe)/scinti or digital)
(Jet chamber as option)
SiVTX pixel(cold version)
(numbers for `Huge’ are all tentative)
sb=5 10/(pbsin3/2q) mm
# of fired pixels ~ 5.0 pixels/hit
TRC500 beam parameters
Inner radius should be optimized based on physics performance using ILC parameter
(Number of channels would be similar to other detector designs, though)
…. …. ….
⇒Many challenges and open questions:
Need detailed studies. New Participation are highly welcomed !