NUMI MINOS MINOS Far Detector Installation & Commissioning Jeff Nelson MNHEP DoE Visit September, 2002

NUMI MINOS DoE Review 12/02 Page 2 Outline Plane assembly >Status & experience >Projection methodology >Projected schedule >Issues & costs >Safety Detector operation >Live time & data collected

NUMI MINOS DoE Review 12/02 Page 3 The detector in August…

NUMI MINOS DoE Review 12/02 Page 4 Assembly & Commissioning SM1 Completed in July >Met commissioning milestone on July 26 th 354 of 484 planes installed >73% completed, 3.9 kton 348 planes commissioned All commissioned planes are collecting calibration & cosmic ray data

NUMI MINOS DoE Review 12/02 Page 5 Installation Schedule We have averaged 6.2 planes per week since installation reached full efficiency in Nov. 01 Currently 4 days behind working schedule >Amall drop off in rate associated with a few factors including Workers now have vacation time Some attrition in staffing Plots shows >Current FNAL working schedule >Actual installation schedule >Projected completion schedule Differences described in following slides

NUMI MINOS DoE Review 12/02 Page 6 Installation Extrapolation Data History of MINOS installation hours & plane installation in 2 week periods Some drop in hours work due to crew having accumulated vacation in their first year of employment >About a 10% effect Fit shows what a worker accounts for roughly 0.25 planes/week >No drop off in efficiency for reasonable staffing levels >Some expected a levels below 14 FTE

NUMI MINOS DoE Review 12/02 Page 7 Staff & Future Projections Job Market in northern Minnesota >Down turn in iron mining in early 2001 >We were able to hire some very experienced millwrights & operators for the installation crew >Steel mills are hiring again >We have lost one staff per month each of the last 4 months We are starting to replace these workers to maintain the current efficiency >The projections show what happened if we replace one of the current losses & all further losses >This is our current plan Adding new crew has safety, quality & efficiency implications during training period >Particularly an issue for materials handling >Costs are about $1k per new employee >We do not take this lightly

NUMI MINOS DoE Review 12/02 Page 8 Costs & Schedule Implications The amount of work is the same and there are no changes in efficiency >There are no significant costs for WBS 2.4 associated with install schedule adjustments The only cost implications are to on-project operations costs >2 nd shift charges for DNR hoistman and on-call electricians >Physicist shift leader travel >Staffing for receiving at surface building >All 3 amounts to $5k per week of slip Now projecting a 6 week change in completion date

NUMI MINOS DoE Review 12/02 Page 9 Safety at Soudan Major activities >Continued monthly & annual outside inspections of equipment and facilities >Materials handling procedure review >Field mapping, signage, & training Monthly joint safety meetings continued throughout the period >Back safety >Annual fire safety refresher >Annual operators certification >Cryogenic safety >Site safety update >Rescue team exercises

NUMI MINOS DoE Review 12/02 Page 10 Safety at Soudan We have had 4 safety reports at Soudan since the last review >1 lost days incident Most serious was a herniated disk while moving steel plates at the assembly workstation >5 safety reports 3 near misses 2 no list time accident Incident rates for project >A reportable incidence rate of (per 200,000 hours worked, for crew + physicist) >A lost time incidence rate of >A lost days incidence rate of

NUMI MINOS DoE Review 12/02 Page 11 Detector operations Since the summer we have been collecting data for calibration and cosmic rays We have also been working to increase the live time Addressing potential hardware impediments >HV monitoring improved and hardware swaps >Optimizing automatic recovery hardware/software Have made good progress since early spring in increasing live time

NUMI MINOS DoE Review 12/02 Page 12 Slides in Hand

NUMI MINOS DoE Review 12/02 Page 13 Physicists & Installation A total of 900 physicist weeks or 18 physicist years at Soudan on installation tasks No safety incidents involving physicists at Soudan! Monthly averages Today

NUMI MINOS DoE Review 12/02 Page 14 Laboratory Staff Organization