1. News item and introduction of working groups
Lucie Linssen
LCD monthly meeting
February 22nd 2010
Lucie Linssen, 22/2/2010

2. Upcoming conferences/meetings (1)
Dedicated Software meeting on geometry toolkit (and Mokka/Marlin)
February 24th at CERN
Dedicated meeting on CALICE tungsten HCAL prototype
March 2nd at Desy
(see also testbeam slides W. Klempt, at the end of this talk)
CALICE workshop in Arlington-Texas, March 10-12
LCD contribution requested to presentations on:
Tungsten HCAL, Geant4 hadronisation
Lucie Linssen, 22/2/2010

3. Upcoming conferences/meetings (2)
LCWS10
March in Beijing
We have to propose CLIC physics/detector study contributions (within ~1 week, contact Dieter Schlatter). Sessions on: Tracking/vertexing, MDI session, Calorimetry+muon, Simulation+reconstruction, several sessions on physics subjects
FCAL meeting
Krakow, April
ECFA linear collider workshop (joint ILC and CLIC)
October , CERN (CERN + CICG Geneva)
Lucie Linssen, 22/2/2010

4. Joint ILC-CLIC working group on physics/detector
Marcel Demarteau, Francois Richard, Felix Sefkow, Marcel Stanitzki, Mark  Thomson, Sakue Yamada (chair), Lucie Linssen (deputy-chair)
Lucie Linssen, 22/2/2010

5. Physics/detector CDR layout and organisation
CLIC CDR due for end April 2011 (for council meeting of June 2011)
Introduction
CLIC physics potential
CLIC experimental conditions and detector concept design choices
Detector performance requirements
Tracking system
Calorimeter system
Superconducting Solenoid
Muon system
Very forward calorimeters
Readout electronics and data acquisition
Detector integration
Physics performance
R&D prospects
Costs
Conclusions
Three main editors
SiD (ok), ILD, CLIC (ok)
from 3 regions (Americas ok, Europe ok)
Chapter editors will be nominated by main editors/editorial_board
Lucie Linssen, 22/2/2010

6. CDR working groups (1)
Currently putting a few working groups in place in preparation for the CDR:
1: CLIC physics potential => convener tbc
Scenarios, e.g. also taking possible early LHC results into account
2: Physics observables related to jets (SW) => convener Mark Thomson
PFA optimisation for high-E jets, jet resolution, jet algorithms, missing E
3: Physics observables related to tracks (SW) => convener Marco Battaglia
Track/vertex optimisation, flavour tagging, lepton id (tau id), muon background
4: Vertex detector (mostly HW) => convener (under discussion, tbc)
Review possible solutions for a CLIC vertex detector with time-stamping, set R&D goals
5: Engineering, layout, solenoid, cost => convener Konrad Elsener
In addition there is the already existing MDI wg, led by Lau Gatignon
Lucie Linssen, 22/2/2010

7. CDR working groups (2)
The working groups provide platforms of discussion on targeted subjects. They will make it easier for participants with common interests to contribute, to exchange information and to plan/organise/streamline the work.
There is a limited number of working groups, adapted to the current status of the project and also adapted to the available resources (creating many more wg’s would give a broader coverage, but would not be well adapted to the current level of resources).
Current status of the CDR preparation (simulations): “getting tools reading in preparation for benchmarking”. We have ~5 months of time for this, trying to move to “production and benchmarking” by August.
Add that point we may redefine the wg’s, e.g. add “benchmarking” (possible merge of 2+3?)
We will put web pages / indico / mailing lists in place to help getting the wg’s started asap.
I suggest that the conveners each appoint an alternate.
I suggest that wg’s to give short summaries at the monthly meetings.
Lucie Linssen, 22/2/2010

9. Preliminary PS/SPS Schedule we run 7/10 to 21/10
xxxxxxxxxxx
Discuss next week at DESY 2 March:
W delivery schedule
Opt for 4 batches each 5 absorber plates all 2 weeks from mid June onwards
Discuss when and how to transport “Cassettes” from DESY to CERN and
Rack with read out and calibration electronics from FNAL to CERN
Test beam setup
Define “all” cables and gas pipes. To be installed by 29 April 2010
(No user in T9 period from 16/8 to 19/9, but will maybe be filled)

10. T9 Test Beam Setup Calorimeter Prototype Beam 1.3 above floor
Beam Counter
Delay wire chamber
Area 10cm * 10cm
existing
Cherenkov (CO2)
to separate e- from π-
1Gev 50% e- + 50% π-
5Gev 10% e- + 90% π-
Scintillators
Fingers 1cm *10 cm
General 10cm * 10cm
Veto 25cm * 25 cm (with hole of 4cm)
Veto behind < 50 cm * 50cm
Calorimeter Prototype
Telescope
GEM chamber σ ≈ 1mm
T9 Test Beam Setup

11. Triple-GEM Detector “Standard” size : 10cm * 10cm
Ar/C02 70:30 gas-mixture
One may choose pad plane
geometry

12. Cathode Plane and Read Out
40 mm
3.6 mm
100 mm
Resolution:
11*11 = 121 Channels
Digital read out
AVP-25 chip
128 channels per chip
Need 1 chip/ chamber
H. Mueller is producing
read out chain
Central scintillator