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Progress Update on Sub-Task 1: PETS Fabrication and Testing at CIEMAT

This document provides a progress update on the fabrication and testing of copper rods for the PETS project at CIEMAT. The first copper rod is complete and has passed dimensional control. Machining of seven additional rods is underway, expected to finish by week 21. Couplers for the system are in production, with design finished and machining expected to complete by week 22. Future activities include brazing couplers, testing RF measurements, and the assembly of rods by electron beam welding (EBW) at CERN.

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Progress Update on Sub-Task 1: PETS Fabrication and Testing at CIEMAT

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  1. Progress on sub-task 1. Double length CLIC PETS A. Lara, E Rodríguez, L. Sánchez and F. Toral CIEMAT 03/05/2011

  2. PETS fabrication: copper rods First copper rod is already at CIEMAT. Dimensional control OK. Seven copper rods are being machining. Expected to finish on week 21 SiC firing: 1000ºC /10-5 mbar/ 2 h Dimensional control of the first copper rod First copper rod

  3. PETS fabrication: couplers and tank COUPLERS AND TANK DESIGN IS FINISHED • Couplers are being machined at DMP, expected to finish on week 22. Brazing details are agreed with the brazing company (Ecor). • Mini tank is ordered, expected to be finished on week 24.

  4. PETS testing: design of the RF measurements Before brazing (optional). After brazing. COUPLERS MEASURING S11 AND S12 • Three different rings: • Lo (70 mm) • Lo +60 º (4.169mm) • Lo+120º (8.337mm) After brazing Before brazing

  5. PETS testing: design of the RF measurements Before EBW. Rods only. Measurement of S11 and S12. Measurements of the phase shift with antenna held by a digital ruler (accuracy 0.01 mm) . EIGTH RODS WITH DAMPING MATERIAL • After EBW. Rods + couplers. • Measurement of S11 and S12. • Bead pull measurements (optional). Before EBW After EBW

  6. PETS: future steps • Activities for the next months: • Finishing the bars, couplers and tank machining. • Brazing of one set of couplers at Ecor. • RF measurements of the copper rods before assembly. • Assembly of the rods by EBW at CERN.

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