FY 2025 Reliability Summary
Reliability Budget            
System Unavailability Allotment   Number of Faults Mean Time to Beam Loss Faults Per  
Day
RF 0.5%     200 0.12  
Diagnostics 0.1%     800 0.03  
PS 0.5%     200 0.12  
Controls 0.3%     500 0.05  
Network 0.1%     4800 0.01  
Interlocks 0.2%     800 0.03  
Accelerator 0.1%     2400 0.01  
Beamline 0.1%     2400 0.01  
Radiation 0.1%     1600 0.02  
MOM 0.4%     480 0.05  
S&A 0.0%     48000 0.00  
Operations & Analysis 0.1%     4800 0.01  
Physics 0.0%     48000 0.00  
ID-FE 0.1%     4800 0.01  
ID-FE/MD not specified          
ID-FE/XFE not specified          
Utilities 0.3%     800 0.03  
Electrical - APS 0.1%     2400 0.01  
Electrical - ANL 0.2%     2400 0.01  
Cooling - ANL 0.1%     2400 0.01  
Other 0.2%     1200 0.02  
Unidentified 0.1%     1200 0.02  
Total 2.9%     49.6 0.48  
   
  Data through Run 2025-2  
   
FY 2025 Actual Unavailability Unavailability Number Mean Time Faults Per  
Percent Hours of Faults to Beam Loss Day
RF 0.84% 39.27 36 91.7 0.26 User Downtime Hours 153.28
Diagnostics 0.15% 6.82 6 550.5 0.04  
PS 0.59% 27.32 12 275.2 0.09 Scheduled Hours 4667
Controls 0.30% 14.13 15 220.2 0.11  
Network 0.07% 3.43 1 3302.7 0.01 Delivered Hours 3302.7
Safety Interlocks 0.18% 8.57 11 300.2 0.08
Radiation Monitors 0.30% 14.10 11 300.2 0.08 User Availability 70.77%
Water/ME 0.07% 3.10 2 1651.4 0.01  
Vacuum 0.04% 1.77 4 825.7 0.03 Longest period w/out a fault 197.34
Operations 0.04% 2.08 3 1100.9 0.02  
AOP 0.02% 1.00 2 1651.4 0.01  
Utilities 0.36% 16.67 4 825.7 0.03  
Electrical - APS 0.33% 15.25 3 1100.9 0.02  
Electrical - ANL 0.03% 1.42 1 3302.7 0.01
Cooling - ANL 0.00% 0.00 0   0.00  
Other 0.61% 28.48 2 1651.4 0.01  
Unidentified 0.05% 2.27 4 825.7 0.03  
APS-U         0.00  
Total 3.62% 169.00 119 27.8 0.86  
   
Run 2024-3 Unavailability Unavailability Number Mean Time Faults Per  
Percent Hours of Faults to Beam Loss Day
             
RF 0.77% 12.05 9 169.7 0.14 User Downtime Hours 41.28
Diagnostics 0.31% 4.88 3 509.2 0.05  
PS 0.37% 5.82 2 763.9 0.03 Scheduled Hours 1569.0
Controls 0.09% 1.48 2 763.9 0.03 Delivered Hours 1527.7
Network   3.43 1      
Safety Interlocks 0.42% 6.58 9 169.7 0.14 User Availability 97.37%
Radiation Monitors 0.06% 0.98 2 763.9 0.03  
Water/ME 0.00%       0.00  
Vacuum 0.11% 1.77 4 381.9 0.06 Longest period w/out a fault 197.34
AOP 0.11% 1.75 2 763.9 0.03  
MCR 0.00%       0.00  
ID-FE 0.00%       0.00  
ID-FE/MD 0.00%       0.00  
ID-FE/XFE 0.00%       0.00  
Utilities 0.00%       0.00  
Electrical - APS 0.00%       0.00  
Electrical - ANL 0.00%       0.00  
Cooling - ANL 0.00%       0.00  
Other 0.13% 2.12 2 763.9 0.03  
Unidentified 0.03% 0.42 1 1527.7 0.02  
             
Total 2.63% 41.28 37 41.3 0.58  
   
Run 2025-1 Unavailability Unavailability Number Mean Time Faults Per  
Percent Hours of Faults to Beam Loss Day
             
RF 0.98% 18.52 20 88.8 0.27 User Downtime Hours 112.00
Diagnostics 0.10% 1.93 3 591.7 0.04  
PS 1.14% 21.50 10 177.5 0.14 Scheduled Hours 1887
Controls 0.65% 12.35 12 147.9 0.16 Delivered Hours 1775.0
Network 0.00%          
Safety Interlocks 0.09% 1.63 1 1775.0 0.01 User Availability 94.1%
Radiation Monitors 0.40% 7.52 2 887.5 0.03  
MOM 0.16% 3.10 2 887.5 0.03  
Vacuum 0.00%       0.00 Longest period w/out a fault 173.6
Operations 0.02% 0.33 1 1775.0 0.01  
AOP 0.05% 1.00 2 887.5 0.03  
Utilities 0.72% 13.57 2 887.5 0.03  
Electrical - APS 0.72% 13.57 2 887.5 0.03  
Electrical - ANL 0.00%       0.00  
Cooling - ANL 0.00%       0.00  
Other 1.45% 27.30 1 1775.0 0.01  
Unidentified 0.09% 1.70 2 887.5 0.03  
FE-ID 0.02% 0.38 1 887.5 0.03  
User 0.06% 1.17 1 1775.0 0.01  
Total 6.31% 112.00 60 29.6 0.81  
               
Run 2025-2 Unavailability Unavailability Number Mean Time Faults Per  
Percent Hours of Faults to Beam Loss Day
             
RF 0.46% 8.70 7 253.6 0.09 User Downtime Hours 21.38
Diagnostics 0.00%       0.00  
PS 0.00%       0.00 Scheduled Hours 1232
Controls 0.02% 0.30 1 1775.0 0.01 Delivered Hours 1210.6
Network 0.00%          
Safety Interlocks 0.02% 0.35 1 1775.0 0.01 User Availability 98.3%
Radiation Monitors 0.30% 5.60 7 253.6 0.09  
MOM 0.00%       0.00  
Vacuum 0.00%       0.00 Longest period w/out a fault 179.8
Operations 0.00%       0.00  
AOP 0.00%       0.00  
Utilities 0.16% 3.10 2 887.5 0.03  
Electrical - APS 0.09% 1.68 1 1775.0 0.01  
Electrical - ANL 0.08% 1.42 1 1775.0 0.01  
Cooling - ANL 0.00%       0.00  
Other 0.06% 1.18 1 1775.0 0.01  
Unidentified 0.03% 0.57 2 887.5 0.03  
FE-ID 0.00%       0.00  
User 0.08% 1.58 1 1775.0 0.01  
Total 1.20% 21.39 22 55.0 0.44  
 
            Updated  8/7/2025