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Jeff Hartnell, 08/21/2017 06:20 AM


Period and Epoch Naming

Snapshots of this page are kept in DocDB-15461, which should be updated at suitable intervals (e.g. second, third, etc. analyses).

Periods

Periods are intervals of time characterized by uniform running conditions. A new period is started for a major change to running conditions: a horn current change, a long shutdown, target replacement, etc.

Periods are denoted with numbers. Intervals not expected to be used for analysis should not be numbered. In other words, consecutive periods need not be contiguous.

Epochs

Periods are divided into epochs; a new epoch is started whenever analysis or production reasons dictate. Epochs are denoted with a lowercase letter following the number of the parent period. When a point in time divides epochs, the run spanning the division is part of the later epoch.

Table of Past and Current Periods and Epochs

Period Epoch FD Run # ND Run # Analysis / Comments
Commissioning
Period 1 Epoch 1a 129421 10377 First Analysis (ND is 1+2a only, FD is 1+2a+2b). For period 1, we used coarse timing for the FD. In all other periods, and for all ND data, we used fine timing. First 14kt FD run was 15336 (in the middle of period 1) but much of the data after that has one or more diblocks missing. Most (but not all) of the data from period 2 onward is 14kt.
17139 10407
2014 Shutdown and Refit
Period 2 Epoch 2a 17891 10496
19096 10824
Fri, 13 Mar 2015 23:59:59
Epoch 2b 19097 10825
19586 10932
Fri, 15 May 2015 23:59:59
Epoch 2c 19587 10933
19746 10973
Mon, 8 Jun 2015 9:40:00
Epoch 2d 19747 10974 NuMI Horn scan & NO Horn Current beam
19958 11018
Sat 4 Jul 2015, 00:01:00
Epoch 2e 19959 11019 2015 Summer beam shutdown & start-up
20752 11228
GAIN 140 -- Mon 12 Oct 2015 13:32:38
Period 3 Epoch 3a 20753 11229 NO beam or horn & target scans
20922 11249
Fri, 23 Oct 2015, 11:36:00
Epoch 3b 20923 11250 2015 BEAM
21230 11301
Wed, 18 Nov 2015
Epoch 3c 21231 11302 2015/2016 BEAM, Second Analysis cutoff for ND
22019 11383
Wed, 20 Jan 2016
Epoch 3d 22020 11384 2016 BEAM, Second Analysis cutoff for FD
22900 11537
Mon, 2 May 2016 @ 7:55
Epoch 3e 22901 11538 End of 2016 NuMI neutrino beam
23419 11628
RHC (Anti-Neutrino) mode -- Wed 29 Jun 2016 19:45
Period 4 Epoch 4a 23420 11632 Short 2016 antineutrino beam
23670 11667
2016 shutdown -- Fri, 29 July 2016 @ 12:35
Epoch 4b 23671 11668 2016 summer shutdown. DAQ updated to R10 release with new data format.
24587 11920
Beam returns in RHC (anti-neutrino) mode from shutdown -- Fri, 11 Nov 2016
Epoch 4c 24588 11921 antineutrino beam after shutdown. Note R10 DAQ release used with new data format, horn re-aligned
24613 11925
FHC (Neutrino) mode -- Mon 14 Nov 2016
Period 5 Epoch 5a 24614 11926 2016/2017 BEAM (the end of Epoch 5a was the cutoff for miniproduction)
25035 12028
Tues 10 Jan 2017
Epoch 5b 25036 12029
25412 12086
RHC (Anti-Neutrino) mode -- Mon 20 Feb 2017
Period 6 Epoch 6a 25413 12087 2017 antineutrino beam
26685 12289
2017 shutdown -- Fri, 7 July 2017 @ 12:01

1 First full-gain un-mangled run was 11496.

 

Contrived Example: Future Periods and Epochs

Period Epoch Analysis
Period 2 Epoch 2c Second Analysis
2015 Shutdown
Period 3 Epoch 3a
Begin RHC
Period 4 Epoch 4a
Second Analysis Cutoff
Epoch 4b

Reference

As a cross check to Watchdogs milestones, you can take a look at the link below:
https://cdcvs.fnal.gov/redmine/projects/novawatchdog/wiki/Stable_partition_milestones