Inflector installation schedule Chris Polly Fermilab Inflector Installation

Inflector installation schedule Chris Polly – Fermilab Inflector Installation Review 1 August 2018

Preparation Schedule 8/1 -8/12 • Remainder of this week and next, focus on prep – Clear are in front of inflector chamber – Warm up and let up inflector – Built in 20 -30% float 2 6/27/2018

Cut service line, extract chamber 8/1 -8/17 • • • 3 Vacation difficulties – Cary gone 8/6 -12 plan this week, cut week of 8/13 – Jerry taking a long vacation 8/13 -8/29 he cannot be lead tech – Kelly going on vacation immediately after Emmert leaves (8/18 -8/27) Only choice seems to be John N. , ideally would pair with another tech (MAB possibly) 10 -20% float 6/27/2018

Work areas Service line Inflector swap area Cha mbe r ext ract io 4 6/27/2018 n

Removal and installation of inflector 8/20 -31 • Continue to have issue that Jerry is out for most of this period – No float other than utilizing Saturday 5 6/27/2018

Install chamber and reconnect service line 9/3 -9/21 • Continue to have issue that Jerry is out for most of this period – No float other than utilizing Saturday • 20% float 6 6/27/2018

Testing and commissioning 9/19 -9/28 • • Goal is to make final decision to keep new inflector by end of September – 1 week to button ring back up and be ready to run beam – 4 weeks to swap old inflector back in Any slippage beyond this point would start to cut into beam time – Assumption that all other cryo/kicker/quad work will be ready by Nov 1 – Collaboration perspective… 2 weeks of November acceptable risk for chance to have 40% more beam over next 16 months of running • 7 Very low probability that beam has trouble making it through new inflector, but ideally it would be good if we can take some shots from the accelerator the 2 nd week of October to confirm. 6/27/2018

Staying on schedule • Schedule is tight, with only 10 -20% built-in float • Suggest planning for utilizing some O/T when it can have a large impact – Pre-authorization from division to allocate up to 20 hours per week, spread across entire technical crew – Mainly used to wrap up tasks at end of day, Saturday work as a fallback if schedule starts to slide • Ultimately, we could let the schedule slide 2 weeks from what is shown here before the loss of runtime would start 8 6/27/2018

Review Recommendations • Go/no-go dates – Cold mass complete passed TD QC Decision to cut the service line (~Aug 7) – Decision to proceed with angle adjustment capability (~Aug 20) – New inflector passed in situ testing after installation Decision to keep new or re-install old (~Sep 30) • Somewhat soft…collab willing to trade 2 -4 weeks (3 -6%) for chance to gain 40% • Criteria for keeping new inflector – Reaches full operating current (2900 A) – Operates reliably… 24 -hour demonstration – Perturbation to magnetic field is acceptable ( < 100 ppm is good, larger would need further evaluation) • 9 IN PROGRESS 6/27/2018

Review Recommendations • Critical resources identified in operations review – Still need to TD commitment to provide welders and E. Barzi’s group at particular times • Lack of availability of Jerry/Kelly last two weeks of August is an issue • Moving John to be the lead on the inflector work exacerbates conflicts for his time, also a strong go-to technician for quad/kicker work 10 6/27/2018

Answers to questions 1. Where will the inflector vacuum chamber swap take place? It was assembled in PAB, but that space is not available now. Is there room in the g-2 hall for both the old and new one for the swapping. The talks should include a layout of the work area or a picture with the space on it designated. It is very congested in the g-2 hall. 11 – We talked to Ron Davis and the same area at PAB where we did the work initially is still available – The best solution seems to be clearing out the area in the MC-1 hall indicated on slide 4 • Work is not particularly machine shop intensive • No need to transport • Have to bring in key experts and their equipment regardless of location, e. g. welders, TD soldering experts, alignment 6/27/2018

Answers to questions 2. Is there an installation procedure written with steps or is the installation procedure only going to be the power point presentation that we get? A detailed and reviewed procedure with the steps will reduce risk. – We have detailed procedures and JHAs for many of the standard steps including cool-down, warm-up, vacuum let-up, chamber extraction/installation – Could still benefit from developing some additional written procedures for some of the other more complicated steps, e. g. cutting service line, soldering/unsoldering, 12 6/27/2018

Answers to questions 3. Do drawings exist of the existing infector? Does the new inflector dimensions match the existing inflector or are there differences? Are the cooling connections in the same location and of the same material? Is the lead connection in the same place? – Yes, we have drawings, but we know BNL made some final changes that are not in the versions we have. – In any case, we expect new inflector to mate up exactly because we reused the cold mass shell from the original E 821 inflector. – Cooling and lead connections are at the same location with identical materials. 13 6/27/2018

Answers to questions 4. Is there a procedure for how to un-solder the existing superconducting wire connection and make up the new solder connection? – This connection was unsoldered before by BNL techs (available for consult) and we (TD) did the soldering for the current installation at FNAL – Would benefit from a write-up 5. Review recommendation number 2 of the shutdown minireview was to establish a go/no-go date for the installation of the inflector. What is the (new) date? The schedule presented at the review it was to start July 23 (slide 12 of Badgley talk). – Discussed on slide 9 14 6/27/2018

Answers to questions 6. Can g-2 provide names of personnel planned for the iinflector change along with the number of man-hours required for each? This would be a response to recommendation 4. What are vacation/travel plans for these folks during this period? For example, Cary Kendziora might have foreign travel plans for a dark matter project coming up. – Discussed throughout this talk slides 2 -8 15 6/27/2018

Backup Slides - Button up ring schedule 16 6/27/2018

Backup Slides – Time to swap old inflector back in 17 6/27/2018