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The magic experiment
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| tarix | 03.08.2018 | | ölçüsü | 480 b. | | #67059 |
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- The MAGIC experiment
- The data center
- Migration to Grid
- Tools for users
Scientific targets Scientific targetsCosmic AcceleratorsFundamental Questions- Dark Matter, Cosmic Rays, Quantum Gravity, Cosmology …
The MAGIC collaboration:- 21 institutes (mostly in Europe)
- ~ 200 members
Telescope site in Canary Islands- Observatorio Roque de los Muchachos
MAGIC-I: operating since 2004MAGIC-II: in commissioning (2009)
Discovery of 10 new VHE g-ray sources Discovery of 10 new VHE g-ray sourcesDetection of distant VHE g-rays Observation of GRB in prompt emissionTest on Lorentz Invariance (QG effects)> 40 papers in high impact journals- Including 4 in Science magazine
MAGIC VO started in 2004 MAGIC VO started in 2004- Initiative by H. Kornmayer et al.
- 1st A&A project with PLANCK
Initial project: 2 main areas- Monte Carlo production
- Data storage and reduction
Operations:- 2004-06: no manpower
- 2007-08: activity resumed
- MC: UCM, Dortmund, INSA
- Data Center: IFAE and PIC
The MAGIC data center is hosted at PIC The MAGIC data center is hosted at PIC - Started in 2006 as a “classic” data center
- Joint project: IFAE, UAB, UCM & IAA
- Stores ~300 TB/year of raw data
The MAGIC data center at PIC provides:- Data transfer La Palma -> Barcelona
- Data storage
- Official data reduction
- Data access for the collaboration
- Resources and tools for users’ analysis (*)
- Publish data to the Virtual Observatory (*)
- (*) In preparation
The data center services are being migrated to Grid The data center services are being migrated to Grid- While the data center is in production
- Still a centralized data center
- + Give access to computing for users’ private analysis
Services to be publishedRequirements from the experiment- Make sure no features are lost
- Data access without certificate
- Overall, a soft transition
Grid is not kind to new users Grid is not kind to new users- CLI tools are complex and not very user-friendly
- Optimal data access and workflows need experience
- Wrapper CLI tools with familiar look & feel
- Graphical interface to access most common features
- Set of workflow templates for parameter-based jobs
- CLI still available for power users
Learning curve can be significantly reducedBetter user support if known, mature tools are used
A Gateway is in development A Gateway is in developmentFull security- Grid certificates, VOMS
- User profiles: user, admin, public
Currently in design phase- Define modules
- Platform: use existing tools?
- Reusability: similar VOs in PIC
Users will not wait for the Gateway Users will not wait for the Gateway- Two short-term solutions to soften the transition
Magicdoors- Web based data access to local SE
- Based on httpdoors for dCache
- Password authentication: no certificate needed (requirement)
Virtual-UI
The migration of the data to a Grid SE was effective in July The migration of the data to a Grid SE was effective in July- Virtual UI and magicdoors are already in use
- While MAGIC Gateway is in design
The migration is being soft enough- Only small issues which are being solved
- Working close with IFAE magicians, ~ guinea pigs
- Otherwise not much feedback… No news, good news!
The MAGIC data center is being migrated to the Grid The MAGIC data center is being migrated to the Grid- All data is already published
- Rest of services will follow soon
Tools are being developed for user-friendly use of Grid- A specific Gateway for MAGIC
- Short term solutions while waiting for the Gateway
The migration is ongoing and successful so farThanks!
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