Summary of Instrument Usage (1999-2003)
-
Overall, we averaged 10.4 beam hours per day (365 day/year
basis). Note that extended maintenance periods occurred in
2000 and 2003.
-
External NSF-sponsored users accounted for 6617 hours of analysis
time. This represents about 35% of the total usage over this
interval or roughly 110 days per year when expressed in terms of
12 hour days.
-
Internal ion microprobe group members accounted for 9280 hours
(49%). Of this, 5583 hours (29%) were devoted to NSF-sponsored
projects. Therefore, NSF's share of instrument time has been
12200 hours (64%) over the last five
years.
-
Total non-NSF usage was 5067 hours or 27% of the total instrument
time. This work was funded by
NASA,
DoE,
NIST,
NIH,
PRF, and
other agencies.
-
Testing and development of new and existing instrumental
capabilities and analytical methods was 1791 hours or 9% of the
total instrument time. This category does not include down time
required for repairs or routine maintenance which is also an
important part of maintaining a facility.
Facility Usage Statistics
| Facility Usage |
1999 |
2000 |
2001 |
2002 |
2003 |
Total |
| Beam hours |
4025 |
3653 |
4178 |
4100 |
3102 |
19058 |
| %efficiency |
45.9 |
41.7 |
47.7 |
46.8 |
35.4 |
43.5 |
| Beam Hours/day |
11.0 |
10.0 |
11.4 |
11.2 |
8.5 |
10.4 |
| Beam Time (%) |
| Ion Probe Group |
43.3 |
43.2 |
61.3 |
42.6 |
43.4 |
48.7 |
| External (NSF) |
40.6 |
44.0 |
20.4 |
40.2 |
43.9 |
34.7 |
| External (Other) |
8.7 |
3.4 |
5.0 |
5.5 |
3.4 |
7.2 |
| Testing & Development |
6.4 |
9.4 |
13.2 |
11.8 |
9.3 |
9.4 |