1 / 13

TIB-TID insertion test into the CMS Tracker cylinder

TIB-TID insertion test into the CMS Tracker cylinder. ________________________________________________________ Tracker week july 04 Francesco.Palmonari@pi.infn.it.

saburo
Download Presentation

TIB-TID insertion test into the CMS Tracker cylinder

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. TIB-TID insertion testinto the CMS Tracker cylinder ________________________________________________________ Tracker week july 04Francesco.Palmonari@pi.infn.it

  2. Summary:- introduction & test description- TIB-TID single barrel sliding onto aligned Pisa cradles - Pisa cradles sliding onto the “Antti Chariot”- TIB-TID barrels sliding onto the TOB inside rails- sliding impact on TIB-TID internal alignment evaluation- modifications to be implemented on the Pisa cradles - conclusions ________________________________________________________ Tracker week july 04 Francesco.Palmonari@pi.infn.it

  3. Introduction: this test required - All TIB final barrels (without precisions parts) - A mock-up (made out of wood) of the TID service cylinder - 4 cradles (2-in & 2-out) from Pisa • - the full scale tracker cylinder mock-up • the TOB mock-up (modified to host both TIB-TID FW & BW barrels) • the “Antti chariot” The test has been carried out at CERN building 186 in collaboration with A.Onnella et al. & C.Lasseur et al. ________________________________________________________ Tracker week july 04 Francesco.Palmonari@pi.infn.it

  4. Test description - The tracker cylinder will have 2 internal rails (from now on TOB rails) - The TOB will have 2 internal rails (from now on TIB rails) - TOB rails have Y>0 while TIB rails have Y=0 ________________________________________________________ Tracker week july 04 Francesco.Palmonari@pi.infn.it

  5. Test description • The “Antti Chariot” extends the tracker cylinder TOB rails • The Pisa cradle-in extends the TIB rails • The Pisa cradle-out TIB rails matches the ones of the cradle-in In this way, the Pisa cradle-out (carrying a TIB-TID FW or BW barrel) “lands” on the “Antti Chariot”; slide on the “chariot” until matching the cradle-in TIB rails and at this point the TIB-TID barrel can slide until reaching his final position inside the already installed TOB. ________________________________________________________ Tracker week july 04 Francesco.Palmonari@pi.infn.it

  6. TIB-TID single barrel sliding onto aligned Pisa cradles To check the TIB-TID feet we match together two Pisa cradles (one in and one out) and we align them. We notice that the feet allow a smooth enough sliding on to the overall length of the cradle rails. (detail of a TIB-TID feet) 6 mm The final barrels will come together with their service disk. The shape of the service disk will close the external end and limit the access during the insertion, this was not tried in our tests ________________________________________________________ Tracker week july 04 Francesco.Palmonari@pi.infn.it

  7. Pisa cradles sliding onto the “Antti Chariot” “Antti chariot” rails aligned to the tracker cylinder TOB rails Pattino mobile modificato “landing” of a cradle on the “chariot” “chariot” wheels details: - levelling feet - dumped wheels ________________________________________________________ Tracker week july 04 Francesco.Palmonari@pi.infn.it

  8. Pisa cradles sliding onto the “Antti Chariot” For this test we modify one Pisa cradle Original cradle feet Modified cradle feet (fixed end) Modified cradle feet (slot end) The fixed end feet allow only rotation The slot end feet allow also some transverse translation to compensate for any possible deformation (“Antti chariot” or cradle itself) ________________________________________________________ Tracker week july 04 Francesco.Palmonari@pi.infn.it

  9. Pisa cradles sliding onto the “Antti Chariot” We use the TOB push-pull device clamping some adaptor pieces to our cradle Connection piece TIB rails matching detail inside TOB mock-up. Special pieces are made (NB: had ~1.4 cm left/right length difference of the connection pieces) Piastra di collegamento al cradle ________________________________________________________ Tracker week july 04 Francesco.Palmonari@pi.infn.it

  10. TIB-TID barrels sliding onto the TOB inside rails Detail of the stop piece located on the TIB rails inside TOB Entrance on the TOB of the TIB-TID BW barrel (at this point in the final we will not see such a big portion of the TOB because of the service disk ) TIB-TID barrels before reaching their final position at the stop piece (NOT corresponding to the centre of the tracker cylinder) ________________________________________________________ Tracker week july 04 Francesco.Palmonari@pi.infn.it

  11. sliding impact on TIB-TID internal alignment evaluation • We had the time to take a survey, based on the inner flanges diameters of the • Layer 4 & layer 1 of the TIB-TID FW barrel. • We measure these circles in two position of the FW barrel separated by a • sliding of about 70 cm on the TIB rails of the TOB mock-up. • The survey was performed thanks a theodolite by personnel of the CERN survey group (C.Lasseur). • They provide us a report that can be found in EDMS Doc. Num. 482095. • Main indication of this survey are that: • - relative distances between L4 & L1 changes by no more then 30 mm • the effect of sliding was a shift the common centre of the circles by 300 mm (in more details a small rotation, i.e. twist, around CMS +Z) Used optical target End rail target adaptor on the tracker cylinder for definition of fhe reference system ________________________________________________________ Tracker week july 04 Francesco.Palmonari@pi.infn.it

  12. Lessons learned: • - Add attach points for lifting up & down the cradles • - Add longitudinal reinforcement for walk and to dump vibrations • Remove 3 arch on the top part • Remove 4 feet support/cradle (i.e. 4 feet/cradle only not 8) - Make 4 new adjustable feet supports/cradle • - Make 4 new feet (the sliding part of it)/cradle • - Make and install 2 adaptor pieces/cradle for the push-pull machine • - Move the position of 2 cradle-in feet towards inside (for chariot removal) • - Change the rail supports from 10 pieces to 2 (6 more support to be made) • - Add guided attaching system between cradle in & out • Machining of the lateral block to avoid left/right differences • (barrels modifications) TIB-TID feet dimensions to account for spacers and clearances TIB-TID feet rest position (add a spring to avoid rotation in case of contact loss) define the way a barrel clamp to the cradle during transportation • (procedure modification) allow the possibility to realign by direct match ________________________________________________________ Tracker week july 04 Francesco.Palmonari@pi.infn.it

  13. Conclusions Spotted and solved many problems Have now a better understanding of a “final procedure” Modified in situ 1 cradle (over 4) to get the prove of concept of : - TIB-TID single barrel sliding onto aligned Pisa cradles - Pisa cradles sliding onto the “Antti Chariot”- TIB-TID barrels sliding onto the TOB inside rails- sliding impact on TIB-TID internal alignment evaluation Have to implement the cradles modifications (by end of september ?) and possibly repeat the exercise with final tracker cylinder and final TID service cylinder (november ?) Pattino mobile odificato in posizione nominale (al centro della slot quindi “corretta”) ________________________________________________________ Tracker week july 04 Francesco.Palmonari@pi.infn.it

More Related