A Report from ACFA Linear Collider Physics and Detector Working Group

1
A Report from ACFA Linear Collider Physics and
Detector Working Group

• For ACFA Plenary Meeting,
• 2 Feburary 2007
• At Indore, India
• Prepared by Akiya Miyamoto

2
Working Group Task
The ACFA Linear Collider Physics and Detector
Working group has been established since 1998 in
response to the ACFA statement. The group has
organized workshops and published the report in
2001 which elucidates physics scenario and
experimental feasibilities at the linear
collider. These activities leaded to the second
statement on the ee- collider issued by ACFA,
and ACFA Linear Collider Steering Committee
(ALCSC) has been formed to further promote the
linear collider project. Under the ALCSC, our
group has been transmuted to the sub-group on the
linear collider physics and detectors, and
Contact persons of the group have also been
re-created. Our task is to continue studies on
physics at the linear collider more precisely and
more profoundly, taking into account progresses
in our field, as well as on developments of
detector technologies best suited for the linear
collider experiment. As we know from past
experiences, this will be enormously important to
realize the linear collider. 1 August 2003
From http//acfahep.kek.jp/WG
3
Joint 9th ACFA and GDE Workshop

• Feb. 4 -7, IHEP, Beijing http//bilcw07.ihep.ac
  .cn/
• Held jointly with GDE
• Program ? see next page
• Release of ILC RDR and DCR (Detector Concept
  Report)
• Discuss activities on ILC Physics and Detectors,
  including plans for coming years
• Open/Close sessions of International Review
  Committee for ILC tracking ( Organized by RD
  panel of WWS ) are held in 2nd/3rd day
• So far, about 170(60) participants outside
  (inside) China are registered for ACFA and GDE
• About 26 ACFA ( GDEACFA ) plenary talks and
  about 50 parallel talks

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Program (ACFA part)
Feb. 4 Morning Joint ACFA GDE Plenary Joint ACFA GDE Plenary Joint ACFA GDE Plenary Joint ACFA GDE Plenary
Afternoon ACFA Plenary ACFA Plenary ACFA Plenary ACFA Plenary
Feb. 5 Morning Tracking Review Physics Simulation/ Reconstruction
Afternoon Tracking Review MDI/Magnet
Afternoon Colloquium Colloquium Colloquium Colloquium
Feb. 6 Morning Tracking Review Closed Calorimeter/ Muon/DAQ Vertex/ Tracking
Afternoon Tracking Review Closed Calorimeter/ Muon/DAQ Vertex/ Tracking MDI/Magnet
Feb. 7 Morning ACFA Plenary (Summary) ACFA Plenary (Summary) ACFA Plenary (Summary) ACFA Plenary (Summary)
Afternoon Joint GDE ACFA Summary Joint GDE ACFA Summary Joint GDE ACFA Summary Joint GDE ACFA Summary
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Detector Concept Report (DCR)

• DCR is a document accompanied to the ILC RDR
• DCR consists of Physics and Detector chapters
• Editors
• Physics 1 exp.1theory/region Abdelhak
  Djouadi, Joe Lykken, Klaus Monig, Yasuhiro
  Okada, Mark Oreglia and Satoru Yamashita
• Detector 1/region detector RD panel John
  Jaros, Ties Benke, Akiya Miyamoto, C.J.S.Damerell
• Detector DCR describes
• Challenges of detector performance, concepts, MDI
  issues, detector technologies, performances, 2
  detector issues, options, cost, future step,
• A very preliminary document is available at
  http//www.linearcollider.org/wiki/doku.php
• Feed back from the society and refinements are
  planed after 9th ACFA Workshop

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Roadmap after DCR

• After the RDR, GDE intends to prepare an EDR
  document for 2010
• WWS has started to define its own roadmap in
  conjunction with ILCSC
• Objectives include
• Remain in phase with the GDE to start the
  construction of detectors in parallel with the
  construction of the machine
• Make it possible to start physics 8 years after
  the beginning of the construction of the machine
• EDR ready for 2 Detectors in 2010-2011 which
  needs an intense technical effort starting early
  2009
• We will discuss the issue and a process to guide
  us at the plenary session of 9th ACFA Workshop

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Progresses on ILC Detector RD

• Simulation studies
• Calorimeter
• Main TrackerTPC
• Inner Silicon Tracker
• Vertex Detector

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Simulation Studies

• Studies of performance of GLD, based on Geant4
• Detector simulators and reconstruction codes are
  developed
• Kalman track fitter for studies of tracking
  performance
• Particle Flow studies
• Studies of beam induced backgrounds/effects to
  detector performance

Reconstructed jet energy resolution almost
reaches the goal 30/sqrt(E)
GLD geometry in Jupiter
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RD on Scintillator based Calorimeter

• Studying scintillator and photon sensors by
  GLD-CAL group Kobe, Niigata, Shinshu, Tokyo,
  Tsukuba (jp), KNU (kr), JINR(rs)
• Beam tests are scheduled at DESY/FNAL
• in 20072010 with CALICE group RD's are
  becoming inter-regional

Kuraray Mega strip plate
Extruded and covered by TiO2
GLD-CAL meeting at Kyungpook Nat. Univ.(Korea),
Aug. 2006
KNU strip w/o TiO2
KNU strip w TiO2
Kuraraytile
Photon sensors MPPC's by HPK are under test
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Main TrackerTPC
GEM membrane

• TPC with read out by Micro Pattern Gaseous
  Detector is studied
• RD Issues
• Choice of Chamber gasses
• Effects of Ion build-up, Ion feedback
• Field non-uniformity, Calibration methods
• Beam backgrounds
• From analysis of beam test data,terms affect
  spatial resolution is understood
• In order to demonstrate the full volume tracking
  in the non uniform magnetic field of PCMAG, beam
  tests by the best-at-present MPGD TPC candidates,
  achieving the expected resolution for LC TPC, are
  planed.

PCMAG arrive at DESY

• This is a joint work of LCTPC international
  collaboration Member institutes in Asia
  Tsinghua (China), Hiroshima, KEK, Kiniki, Saga,
  Kogakuin, Tokyo UAT, Tokyo, Tsukuba (Japan),
  Mindanao US-IIT(Philippine)

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Inner Tracker Study by Korean Group
Si strip detectors and read out electronics are
developed
IT-Barrel
IT-Forward
VTX
Geant4 based simulation study
Beamtest and radiation damage test were carried
out using 3545 MeV beam at Korea Institute of
Radiological and Medical Science
gt2 IT layers improve Momentum Resolution
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Vertex Detector RD

• ILC Vertex Detector consists of 10 Giga pixels.
  Reading out signals of 2820 bunches in 1msec, ILC
  vertex detector has to achieve the impact
  parameter resolution, sIP, 5 ? 10/(pb sin3/2q )
  mm.
• GLD solution
• Fine Pixel CCD ( 5x5mm2pixels, fully depleted)
• 3 super-layers, each consists of 2 layers 6
  layers in total
• RD issues Resolution, Lorentz angle, charge
  spread, multi-port high speed readout

Setup to test charge spread
Vertex Detector sensor layout
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Up coming events

• Joint GDE and 9th ACFA LC Workshop
• At IHEP, 4-7, Feburary, 2007
• LCWS 2007
• Hamburg, Germany, May 30-June 6, 2007
• International Advisory Committee will be formed
  soon,
• WWS OC LOC of Past WS theorist from each
  region