Topics to be studied:

What beamstrahlung, energy spread can we tolerate, how and how well can we measure them?
What requirements do we have on polarimetry with/without positron polarisation and what is feasible?
How do dispersion effects and time dependencies affect the measurement?
What precision on the beam energy can we reach at the Z and the W-pair threshold?
Do we need polarimeters and energy measurement behind the IP?
What is the expected uncertainty on event selection and luminosity measurements?

Which measurements can give competitive results to the e+e- B-factories and the hadron machines?
Are 10^9 Zs enough or do we need more?
How many events per bunch crossing, train can we tolerate?
Are their special detector requirements (smaller beampipe, particle ID, better ECAL...)?

TESLA TDR, physics part
P.C. Rowson, M. Woods, EXPERIMENTAL ISSUES FOR PRECISION ELECTROWEAK PHYSICS AT A HIGH LUMINOSITY Z FACTORY hep-ex/0012055
R. Hawkings, K. Moenig, ELECTROWEAK AND CP VIOLATION PHYSICS AT A LINEAR COLLIDER Z FACTORY, E. Phys. J.direct C8 (1999) 1
K. Moenig, What is the Case for a Return to the Z-Pole?, hep-ex/0101005
J. Erler et al. Physics impact of GigaZ, LC-TH-2001-002
A. Ali et al., b-Quark Physics with 2 . 10^9 Z Bosons , LC-TH-2001-018
G. Wilson, Precision Measurement of the W Mass with a Polarised Threshold Scan at a Linear Collider, LC-PHSM-2001-009
M. Winter, Determination of the strong coupling constant at Giga-Z, LC-PHSM-2001-016