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IceCube Offline Database Overview

IceCube Offline Database Overview. Georges Kohnen Université de Mons-Hainaut 6.6.06. Today’s ride…. Introduction Database contents Filling the Database, now and in the future Reading from the Database, interaction with offline-software Practical information. 2. Introduction.

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IceCube Offline Database Overview

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  1. IceCube Offline Database Overview Georges Kohnen Université de Mons-Hainaut 6.6.06

  2. Today’s ride… • Introduction • Database contents • Filling the Database, now and in the future • Reading from the Database, interaction with offline-software • Practical information 2

  3. Introduction • MySQL Database, “I3OmDb” • Contains / will contain all the non -physics information needed by offline -software, on the SouthPole, on a cluster or on your laptop: • Detector Geometry / Calibration / Status / Run / Monitoring / Trigger… information • Ice Properties • AMANDA information • Different “lookup” tables 3

  4. Introduction • The stored information is time -based • Records are “stacked” on each other • Example: Geometry Demonstration “Qualifier” Drilling01/2006 Corr02/2005 Drilling01/2005 Initial Drilling: lots of strings Better calibrations: only string 21 Drilling: only string 21 Planned Geometry, whole detector Time 01/2004 01/2005 01/2006 4

  5. Geometry tables • AMANDA Geometry (recently corrected…) • Planned geometry (IceCube + IceTop) • Drilling/Installation Season 1 (string 21 and stations 21, 29, 30 and 39) • Corrections to these coordinates (from Kurt) • Drilling/Installation Season 2 (strings 29, 30, 38, 39, 40, 49, 50, 59 and stations 38, 40, 47, 48, 49, 50, 57, 58, 59, 66, 67, 74) • (= most “real” geometry presently available) 5

  6. IceTop tables 6

  7. AMANDA tables Contents of “old” AMANDA omdb used by Sieglinde 7

  8. Charge (Calibration) tables from domcal .xml files Updated every few weeks 8

  9. DOM Configuration tables Updated once per run 9

  10. DOM Configuration tables • There are 64 variables in these table: for 5000 DOMs and 1 run = 1 day, there are 117 million entries for just one year → waaaaaay too much! • → Split this table up according to the frequency at which the variables change (once a run, once a year,…) • This is one of the cases where input / documentation / coordination is still needed! A

  11. DOM Monitoring table from Ignacio’s Monitoring files B

  12. Trigger tables • Different design: triggers do not all have the same parameters • New! Being tested right now… C

  13. “Lookup” tables • OMId ↔ (string,tube) for AMANDA • DOM Serial number ↔ DOM location (string,tube) • DOM Serial number ↔ DOM name/nickname • RunId ↔ Run start date/time D

  14. Independent tables IceProperties: Effective Scattering length and Absorption length for different wavelengths (in 10 nm bins), for cos θ = 0.80 and 0.94, and for different depths: Z in 10 m bins (X and Y not (yet) available) E

  15. Filling the Database • Until recently: filled from (text/.xml) files, database created from scratch each time • Since this past Pole season: automatic update of Detector Calibration/Status from DAQ for online use • Then, regular synchronization of SouthPole I3OmDb with a reference Database in the northern hemisphere, and overall synchronization with this reference DB F

  16. Using the I3OmDb Database at SouthPole Offline chain of modules SouthPole version Source modules Other modules DAQ … To be done: automatic synchronization of Pole and reference DBs (c.f. RevisionId) I3Db services fill calibration and detector status information automatically SouthPole I3OmDb Reference I3OmDb 10

  17. Using the Database in offline-software • I3Db project in offline-software: new design: not one monolithic piece of code anymore, but • one service for each stream (geometry, calibration, detector status,…) • one database service, responsible for connecting to the Database, retrieving/caching the data,… • IceProperties are currently not used in offline-software, thus I3Db does not retrieve this information (yet) Offline-software V2 soon available! I3Db retrieves the information according to the date of the event I3Db services I3OmDb “hot-pluggable” Physics input Source modules Other modules Offline chain of modules … 11

  18. Practical Information • Primary Database server: icedb.umh.ac.be (containing information about the content of the Database and about the I3Db services) • Secondary Database Servers: ppemons.umh.ac.be, dbs2.icecube.wisc.edu • Database Name: "I3OmDb" • Read-only login: username "www“ (> mysql -h "server" -u www) • Recommended tools: • MySql Query Browser • MySql Control Center 12

  19. To be done • On the database side: • Need to store monitoring information from “human” detector monitoring • Need to store precise status information about the DOMs • Finalize complete DB synchronization • Implement “Garbage” or “Temporary” database? • On the software side: • Need to rethink caching process in I3Db • New database services? 13

  20. This is the end 14

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