Questions to sub-detector groups for the detector integration

ILD sub-detector contacts

VTX : Mark Winter, Yasuhiro Sugimoto
Si tracking : Aurore Savoy-Navaro, (Hwanbae Park)
TPC : Ron Settles, Keisuke Fujii
ECAL : Jean Claude Brient, Kiyotomo Kawagoe
HCAL : Imad Laktineh, Felix Sefkow
FCAL : Wolfgang Lohmann
DAQ : Guenter Eckerlin
Muon : not yet determined

Questions consists of generic ones for all the sub-detectors and specific ones. They are listed below;

All sub-detectors
- overall sizes, especially outer and inner diameters and total length
- total weight
- support method/mechanism
- total cross section of cables and pipes (gas and cooling material) and the maximum diameter among them in order to determine gaps between sub-detectors for them
- location of front-end electronics
- route of cable and pipe extraction, i.e. where and how are they extracted ?
- total electric power consumption
- alignment method, e.g. laser system- how to inject a laser beam, where the laser system is installed etc.
VTX and SIT
- Inner support tube inside of TPC is needed ?
  e.g. SIT and vacuum pipe are supported by the tube and VTX is mounted on the beam pipe. The tube is supported by TPC.
- How long can the Be part be ?
- How much is the beam pipe radius and first layer of the vertex ?
TPC
- How much is the field uniformity ?
  - a LCTPC note is available at http://www.mppmu.mpg.de/~settles/tpcbfieldlcnote31.pdf .
  - field reproducibility during push pull
  - anti-DID field is not constant, i.e. it will be varied during experiments
  - requires precise field measurement and calibration at Z-pole
ECAL, HCAL
- 8 or 12 fold symmetrical shape
  -A documentation will be prepared by T.Taheshita, which summaries advantages and disadvantages in each shape.
HCAL
- module shape ? - conventional or Henri's one
- need tail catchers behind the coil and in the endcap ?
COIL
- sizes of cryostat, chimney and anti-DID coil
Anti-solenoid for permanent QD0 (option)
- It will be buried in the endcap yoke. Y.Iwashita will study it.
MUON - need a contact person
- especially number of layers are important and urgent to be decided.
  - The MDI/I action list (http://www.ilcild.org/groups/mdi) states that we need 10 between IP and the last muon chamber. One muon chamber between coil and yoke, the last one outside the yoke. About 7 inside the Yoke. Is it right ?