Diffuser status October 2017 B. Balhan, D. Barna, J. Borburgh, A. Farricker 10/19/2017 3rd Diffuser meeting

ECR status ECR (edh doc. 1836203) document updated following 1st approval round. Outstanding in ECR: Beam impedance validation to be included. BLM implementation to be clarified, awaiting results from Fluka team. Sonia confirmed we need to provide differential drawing for BLM installation as well, before document can be send for approval. Provisional location of BLMs defined and indicated in document. 10/19/2017 3rd Diffuser meeting

Basic RF shielding Bruno proposed RF shield to preserve impedance Aaron determined effect: not ideal 10/19/2017 3rd Diffuser meeting

Differential drawings Need 2 differential drawings for ECR: Diffuser installation (done, see figure) BLM installation 10/19/2017 3rd Diffuser meeting

Diffuser production WRe wire received as well as special flanges and collars. All required material shipped to Wigner Institute. Engineering specification under preparation by Wigner colleagues. Manufacturing of components started. 10/19/2017 3rd Diffuser meeting

Status report by Wigner (D. Barna) All alu parts (support, etc) are finished, and will be assembled as soon as the bolts arrive (hopefully this week). Vacuum chamber is in the queue, so far no problem Wire holder parts are mostly done (wire edm) Machining of all parts finished by the end of the month Vacuum chamber completed by mid November (tooling discussed with the e-beam welder, laser welder). Mounting of the wires: 2 setups by mid November Leak checking of chamber by the end of November Edge welded bellows arrive in principle around mid November (on the critical path). Will be baked and welded quickly after delivery. 10/19/2017 3rd Diffuser meeting