1. Vacuum chamber fabrication Dates refer to end of fabrication, then 8 weeks are to be added for NEG coating, bake-out, acceptance tests, etc. EN-MME LNR dipole vacuum chambers 2 mid Oct 2015 2 mid Nov 2015 2 min Dec 2015 LNR injection chambers (section 1): end Feb 2016 LNR ejection chambers (sections 3 and 6): 1 end Oct 2015 1 end Feb 2016 LNI y-chamber: end Oct 2015 LNI dipole chamber: end Oct 2015 TE-VSC Contacted TRINOS: waiting for formal offer Bellows: w/o end fittings: end Oct 2015 End fittings: end Sep 2015 Complete bellows: mid Oct 2015 G. Riddone, TE-VSCIIC ELENA 201608131

2. ZQNA on-going (1) First set of 3 ZQNA: Report in EDMS 1533536 (prepared by A. Sinturel) Results are not conform (for details see Report) A pollution was visible before bake out, it is acceptable after the bake out. The magnets assembly are not compatible with a correct NEG activation. Pressure stays very high for a system dedicated to ELENA machine which is not compatible with the specification required. The pressure stays the same as a not NEG coated ZQNA tested before. Two bake out could not activate the NEG coating properly, the degas rate stay very high. Second set of 3 ZQNA: Report in preparation (several improvements in the test set-up) Results similar to the previous set Next: test of tank alone (from first set) from Aug 31 st G. Riddone, TE-VSCIIC ELENA 201608132

3. ZQNA on-going (2) Based on the obtained results (outgassing 6  10 -11 mbar l/s cm 2 ), R. Kersevan calculated the corresponding vacuum pressure: 2  10 -10 mbar (ACCEPTABLE?) Mail from Ch. Carli on 12/08: In case the question on the maximum acceptable pressure in the transfer lines comes up, I can give the following input: several order of magnitude higher pressures can be accepted in the transfer lines than in the ELENA ring; the reasoning is that the beam takes only about 10us to travel through the lines, orders of magnitudes less than typical electron cooling time constants (or IBS growth rate constants). The work package description of the vacuum system (EDMS) gives 10E-10 mbar for the lines, but this could be further relaxed (and pressures in some regions will be higher during operation with the external source). G. Riddone, TE-VSCIIC ELENA 201608133

4. BPM on-going Original request from Lars Soby: In order to solve a problem with the BPM sensitivity (very important), I would need to add an insulator disc, below the nut (item 10 on drawing AD_BPMEA0034). We propose a Kapton washer of thickness ~0.3mm. First proposal: Kapton washer - not accepted by TE-VSC Second proposal: screws manufactured in Shapal – vacuum validation tests (degassing and pumping speed) to be done G. Riddone, TE-VSCIIC ELENA 201608134