On Monday 14th, during the venting operation of WI tower, an event made the MIR signals disappear. At the same time, the position of F7 vertical stage changed from 0 to 4 mm in a fraction of second. This is the typical behaviour when the monolithic suspension breaks and the test mass falls on the cage. A visual inspection through a viewport seems to confirm the diagnosis.
TARGET: suspension naked (just mirror to marionette, no HCB) on Wed evening)
==========Wednesday 23/11
- crew: PG+EGO
- activity: close view of the fact
- where: WI payload chamber
- crew: EGO
- activity: Check status in Clean rooms central, check top gun clean air flow
- where: CB
==========Thursday 24/11 Morn
- crew: Ettore
- activity: preparation for payload extraction
- where: ubiquity
==========Thursday 24/11 After
- crew: (Ettore+1) + (EGO 2)
- activity: extraction of the payload
- where: WI chamber => Clean room central
==========Friday 24/11 Morn
- crew: Ettore
- activity: partial dismounting of payload
- where: Clean room central
==========Monday 27/11 Morn
- crew: PG+RM
- activity: extraction of mirror from the payload and setting the mirror in Cl1 (if not done in the Weekend)
- where: Clean room central
- crew: FiURB
- activity: production of new A-F-A (if not done earlier)
- where: lab at 1500 West
==========Monday 27/11 After
- crew: PG+Kyummom
- activity: mirror in Cl1 and first contact
- where Clean room central
==========Tuesday 28/11 Morn
- crew: FiURB
- activity: production of new A-F-A (if not done earlier)
- where: lab at 1500 West
==========Tuesday 29/11 After
- crew: FIURB+PG+RM
- activity: Buffer
- where: central Bld/1500 West
- crew: EGO2
- activity: Cleaning the vacuum chamber
- where: central Bld
==========Wednesday 30/11 Morn/After
- crew: FIURB+PG+RM
- activity: naked suspension
- where: clean room central
==========Thursday 1/12 Morn/After
- crew: RM+PG+E
- activity: completing the payload assembling, payload packed under the tower in the evening
- where: clean room central
==========Friday 2/12 Morn/After
- crew: (E+1)+EGO2
- activity: payload deployment in vacuum chamber/prealignment and balance
- where: Payload vacuum chamber
(needs : dust particle counter in perfect operation, Si wafers)
==========Saturday 3/12 Morn/After
- crew: (E+1)+EGO
- activity: Local control operation
- where: Payload vacuum chamber
==========Sunday 4/12 Morn/After (Monday ?)
- crew: VAC+EGO
- activity: flange and vacuum
- where: Payload vacuum chamber