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AdV-PAY (NI and WI Payloads)
L. Naticchioni, E. Benedetti, H. Vocca, F. Travasso, A. Piluso, M. Montani, F. Piergiovanni - 12:44 Friday 05 June 2026 (69171) Print this report
NI mirror suspended, NI Payload partially assembled, CP structure assembled.
On June 4th, we completed the NI mirror monolithic suspension: the mirror is suspended with the HR face pointing down by 2 mrad. On the 5th, we assembled most of the payload structure (see attached pictures). We left the mirror suspended in the CB clean room. In parallel, the new CP suspension system is assembled and under test, with the CP held by the new blocking system (see the last attached picture).
Images attached to this report
Comments to this report:
majorana, naticchioni - 19:30 Wednesday 10 June 2026 (69214) Print this report
Bad news concerning NI payload hosting the spare mirror. The assembly was almost complete and meant to be finalized this week.
On Tuesday 9/6 morning I was engaged in WI payload works. In the morning with the PAM alignment and in the afternoon with the WI payload extraction.
At 18.30, after the work I visited the status of NI payload, as planned, to have a look and complete the assembly work today.

Unfortunately I saw that two fibers were broken. Luca came and took a look on the system. We do not know when the breaking happened.
The ear appears damaged, rather severely.

Today, with Luca, the payload cage was partially dismounted to allow a better access for inspection.
Helios and Flavio in the afternoon of today inspected. Further entries will follow.

Critical points:
- breaking during the assembly or just after are extremely rare
- availability of spare units for anchors
- clean detachment of 3 anchors without damaging the ears

Further entries will follow
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