T1 status and plans

Fabrizio Ferro – INFN Genova

5th Technical Coordination Workshop25-26 February 2014 - Bogis-Bossey

F.Ferro - T1 status and plans

T1 at Point 5

F.Ferro - T1 status and plans

Maintenance & commissioning

Already done◦Repaired all CSC’s damaged during extraction◦Checked CSC alignment (Dmitry)◦Readout

Replaced out-of-sync VFAT’s Extensive check of ground connections

To be done◦Readout

Replace VFAT’s with bad occupancy patterns Replace position sensors and radiation monitors

◦Commissioning Test fibers, DAQ, etc.

F.Ferro - T1 status and plans

Installation tools upgrade The procedures for insertion and extraction of T1 have

been upgraded:◦ last (first) ~1 m of insertion (extraction) will proceed with parallel

and controlled (via screws) movements of the two half-arms◦ load and tension on the assembly

monitored through load cell◦ relative z position of two half arms monitored and constrained

mechanically by new temporary extensions (Roman Stefanovitch)

Successful simulation of insertion/extraction of one arm as in real life (fast and safe)

F.Ferro - T1 status and plans

HF+ water leak on Feb.1st, 2014

Water leak (likely) caused by a faulty connector inside the Wiener Maraton power supply

A Technical Incident Panel has been set up by Wolfram (2 meetings already done)◦ see minutes for details on investigation and actions

All 4+1 T1 power supplies need to be repaired/changed asap to reinstall them and to allow surface tests and commissioning (1 needed)

F.Ferro - T1 status and plans

Installation: outlook

Manpower◦ CMS: 2-3 CMS people with experience (Dmitry+2)◦ TOTEM: T1 crew

Timing◦ Truss installation CMS* ~6h◦ 2 ¼ on platform CMS* ~4h◦ Temp. services + Commissioning TOTEM 1.5d (more if

viable)◦ Cage-truss alignment CMS* ~4h◦ Insertion, fastening, check CMS* ~1d

• Extrapolation from 2010-11 operations• Operations can be faster now: services

already installed, more experience, more tools

* In case, 1-2 TOTEM technicians to support/replace CMS ones.

F.Ferro - T1 status and plans

Looking forward to...

...reinstalling both T1’s during LS1