Tevatron Decommissioning Plans Phase I Make it Safe

Tevatron Decommissioning Plans Phase I - Make it Safe! Keep it stable! Phase II - Clean it out! 1 Paul C Czarapata

Phase I - Make it Safe • No different than a normal long shutdown – EXCEPT: § § Reclaim for reuse of all cryogens and warm entire ring. Break vacuum and let components up to atmospheric pressure with nitrogen or dry air. Normal shutdown and lock out of power sources. Normal ES&H coverage • After initial few days, all work will be done as fill in while continuing to operate the neutrino program • 2 Paul C Czarapata

Phase 1 - Reuse, Recycle • Various people/projects have plans to reuse elements of the Tevatron § NOv. A, Project X, SRF/New Muon Lab (NML), Magnet Test Facility (MTF), Mu 2 e ® • 3 RF components, BPM electronics, cryogenic equipment, etc. These parts will be harvested when needed and harvesting costs will be paid by the project receiving the equipment Paul C Czarapata

Scale of Effort to Harvest Equipment for other Accelerators. Projected as part of Budget exercises with Department Heads: • Cryogenics Systems – 3. 6 FTE’s • § § • EE Support – 0. 39 § § § 4 Electrical Engineer – 0. 15 Electrical Technician – 0. 15 Mechanical Engineer – 0. 68 Mechanical Technician – 2. 33 Paul C Czarapata Electrical Engineer - 0. 03 Electrical Technician – 0. 26 Mechanical Technician – 0. 10

Scale of Effort - continued • ES&H – 0. 2 § § § • Instrumentation Department – 0. 81 § § • 5 Mechanical Engineer – 0. 15 Mechanical Technician – 1. 95 RF Department – 0. 13 § • Electrical Engineer – 0. 29 Electrical Technician – 0. 40 Information Technology – 0. 05 Scientist – 0. 07 Mechanical Support – 2. 10 § • Electrical Technician – 0. 2 (interlock changes) (initial survey part of Operations shutdown) Electrical Technician – 0. 13 Operations – 0. 05 Total 7. 28 FTE’s $698, 726 Paul C Czarapata

Tunnel work for CDF § § § 6 We have a list of items that must be done for Phase 1 and have agreed to cover the costs for a subset of the list. For example, install two tunnel gates to prevent general public from wandering away from exhibit area. Move distribution transformer from CDF stairwell. …. etc. CDF and D 0 contacts (Jonathan & George) continue to stay in contact with me regarding needed changes. Additionally D 0 has spoken with AD-Cryogenics regarding the extended Cosmic running period. Paul C Czarapata

Equipment control 7 • All Tevatron Equipment for Experiments has been covered by MOU’s and is on a master list previously controlled by the AD Tevatron Head with approval from Division Headquarters. • The list is very dynamic and grows and shrinks over time! We know what is going to be harvested. Paul C Czarapata

Other Major Facilities • Still in discussion: § § 8 CHL – will be shut down and secured. Discussion of possible disposition still underway. Pelletron – originally wanted by Brookhaven National Laboratory, Now, not so sure! C 0 Collision Hall – discussion with laboratory management regarding radioactive storage still in progress. High Bay is used for Horn and Target hot work and refurbishment or compaction. Antiproton Source is reconfigured for No. VA, Mu 2 E, etc. Paul C Czarapata

ANU/No. VA Needs from Tevatron ANU/No. VA § RF anode power supply transformer, switches, cap bank, etc. HLRF system modulators, amplifiers, combiners, etc. LLRF systems (some from Recycler) crates, CPUs, DDS, etc. BPM electronics CPUs, Echo. Tek cards Various controls infrastructure q § q § P. Derwent 9 Paul C Czarapata

Other Cryogenic Needs from Tevatron • New Muon Lab § § § • For use with new 2 K plant in support of linac For use with SLAC 4. 5 K plant in support of Cryomodule testing Project X § 11 30, 000 gallon GHe storage tank 1 50, 000 gallon LN 2 storage dewar 1 11, 000 gallon LHe storage dewar § For use in cryogenic auxiliary systems § § 10 6 MYCOM compressors 3 30, 000 gallon GHe storage tank 1 20, 000 gallon LN 2 storage dewar Paul C Czarapata

Other Cryogenic Needs from Tevatron • • MTF § 1 MYCOM compressor § For use as purification loop compressor for SRF activities, already in place. Mu 2 e § 3 2 1 1 § In support of the three superconducting solenoids § § § 11 Paul C Czarapata MYCOM compressors Satellite refrigerators 30, 000 gallon GHe storage tank 20, 000 gallon LN 2 storage dewar

Phase II - What about the Big “D” (Decommissioning) ? This happens as the allocated budget allows. • We have a detailed list of the ring components • We have the manpower estimates • § Both mechanical and electrical We have time estimates • We have an estimate of the support costs • • 12 We do not have the costs to remove the tunnel sections and floor (green earth) not part of this plan Paul C Czarapata

Tunnel Component Totals – Tevatron only 13 • • • • 775 Dipoles 223 Quadrupoles 208 Spool pieces with Correctors 13 Beam scrapers 26 Electrostatic separators 8 RF Cavities (some RF removed for ANU, more on this later) 36 Cryogenic Isolation Valves 5 Flourinert® pump skids 229 Ion pumps 49 Sublimation pumps 310 Vacuum valves 350 Vacuum gauges 43 Various Beam diagnostics Variety of tunnel support (sump pumps, air handlers, phones, etc. ) And all the wiring and buss work 389 remaining Main Ring magnets • Does not include CDF or DØ detectors Paul C Czarapata

Tevatron mechanical removal (direct costs) technician estimate (sample) D. Augustine 14 Paul C Czarapata

Electrical Costs (direct) for complete removal of ALL services House Device Description Location Tunnel Cable Tray Plus Wire F-4 Galvanized Channel Brackets 4" Copper Bus/*4 4' Light Fixtures Ridgid Conduit Panel Boards Sump Pumps Emergency Lights 15 kva Transformer Stairwell/Misc. Quantity Special Removal Concerns Must validate that all cable 2112 Feet inside of cable tray is deenergized 528 Bus is very heavy, approxiately 2816 Feet 10 lbs per foot. Must use lifting device. 70 2112 Feet 2 1 10 Remove Disconnection In From Man Hours Tunnel In Man Hours 300 15 Paul C Czarapata Total Man Hours $37, 800 420 $19, 800. 00 220 100 120 400 180 32 104 16 8 48 96 20 10 $52, 200. 00 $7, 200. 00 $18, 000. 00 $3, 240. 00 $1, 620. 00 580 80 200 36 18 10 12 $1, 980. 00 22 10 20 $1, 620. 00 $16, 200. 00 18 180 1 8 500 Feet 160 34140 J. Ranson Cost in Dollars 13578 $4, 294, 620 47718

Some typical numbers Main Ring Magnets Unused and sitting 388 Used Totals Total time in days 375 Time to pick mag in Min. Total time in min. hours (6 hrwd) 763 90 68670 1144. 5 190. 75 Main ring Magnet disconnect no of magnets time to disconnect hrs 375 No. of Stands Main Ring Magnet Stands 6 hrwd 375 T in days 6 62. 5 stands out per no loads per day no. of days to remove no. of stands per load 1526 No of interfaces 6 2 12 T to disc one time to disconnect 1 IF total time in mins mag 127. 17 1358 Tevatron Magnet Removal Total time in days Time to pick mag in Min. Total time in min. hours (6 hrwd) 1359 90 122310 2038. 5 339. 75 No. of Stands 60 no. of stands per load Paul C Czarapata 60 1358 stands out per no loads per day no. of days to remove 12 2 24 113. 25 2718 no of straights time to disconnect hrs D. Augustine 81480 tot T in hours 6 hrwd time in days to disconnect time in hours to disc 6 hrwd Tev Disconnect Magnets Tev Mag stands 16 tot T in hours 1 T in days 6 226. 33

Summary Costs Technician, Iron Workers, Rad Safety, etc. Total charge for Fermi FTE Iron Worker Charges Material Charges $3, 957, 440. 00 $234, 000. 00 $1, 538, 916. 00 Electrician Costs Location House Remove Special Disconnecti From Device Quantity Removal on In Man Tunnel Description Concerns Hours In Man Hours 33840 13538 Cost in Dollars $4, 264, 020 Total = $9, 994, 376 ≈ $10 M Only gets it to the surface! (Where to haul it, store it, scrap it? ) NOTE THESE ARE DIRECT COSTS 17 D. Augustine Paul C Czarapata Total Man Hours 47378

Magnet Disposal • May be possible to dispose of Tevatron magnets as lowlevel radioactive waste at a site in Nevada • Example cost for dipoles § § § • Most radioactivity contained in stainless steel beampipe § • 18 (B. Arnold, ES&H) Hauling = $880 per magnet (5 per truck = $4400) Disposal = $531 per magnet (22. 92 ft 3 @ $23. 19/ft 3) Total for 775 dipoles ≈ $1. 1 M May be possible to extract pipe, scrap more material locally? Hotter components (collimators, abort dump blocks, etc. ) may need local storage. Paul C Czarapata

ANU/NOv. A Tevatron Needs 19 Paul C Czarapata

ANU/NOv. A Tevatron Needs 20 Paul C Czarapata

Summary • • • 21 We will support minimal Phase I changes to the tunnel near CDF to support the CDF “experience” Making it safe in Phase I is no different than what has been done numerous times before for long shutdowns We have detailed estimates of effort and materials desired by other projects. § A living document under AD-HQ control! We have detailed estimates for cleaning the tunnel in Phase II Most work will be done either as fill in or paid by projects in Phase I. The Accelerator Division Safety group is, and will continue to be, fully integrated into any and all tasks. Paul C Czarapata