# Presentation: 362661

## Cornell – LEPP Laboratory for Elementary Particle Physics(Was LNS)

- Plans for GAN

- R.Helmke -  LBL GAN Mtg

- 8/26/2002

## LEPP Involvement with GAN

- LEPP future intimately tied to the Linear Collider
- Will devote significant effort to LC R&D
- Considerable machine physics experience
- Strong CLEO experimental program
- Commitment to GAN
- Experience
- Remote CLEO detector control
- Videoconferencing in regular use by CLEO/CESR
- ISDN and VRVS

- R.Helmke -  LBL GAN Mtg

- 8/26/2002

## Cornell/LEPP - TTF

- TTF is an obvious vehicle for GAN partnership
- Control system has many features appropriate to remote operation
- Long history of collaboration with DESY makes this particular collaboration attractive
- LEPP – TTF Projects
- Data AcQuisition System (DAQ)
- Machine Physics Research
- Example for purposes of this talk: Emittance measurement

- R.Helmke -  LBL GAN Mtg

- 8/26/2002

## TTF DAQ Project

- HEP Experimental Detector expertise
- CLEO, Ohio State Univ.
- Upgrade existing TTF “prototype” DAQ
- GAN-involved development
- Remote use in Machine Physics Research

- R.Helmke -  LBL GAN Mtg

- 8/26/2002

## TTF DAQ Development

- Developed Remotely
- Code Management (e.g. CVS)
- Documentation (synchronize with code management system)
- Whiteboard
- Remote compilation and test
- First locally
- Next remotely on-site

- R.Helmke -  LBL GAN Mtg

- 8/26/2002

## Machine Physics Research (e.g. Emittance Measurement)

- Important (and difficult) accelerator physics problem
- Valuable for tuning (TTF, LC)
- Essential for LC
- Draw on LEPP accelerator physics expertise
- Will use the DAQ system

- R.Helmke -  LBL GAN Mtg

- 8/26/2002

## Remote Machine StudiesGeneral Considerations

- Machine Physics is a subset of routine GAN accelerator operation
- Team building is essential at beginning
- Sufficient time on-site
- Many groups and individuals involved
- Electronic logbook
- Easy access - Variety of material
- Access to detailed hardware monitoring and diagnostics

- R.Helmke -  LBL GAN Mtg

- 8/26/2002

## Remote Machine StudiesGeneral Considerations (cont.)

- Security Issues
- Firewall
- Authentication/authorization
- Enormous responsibility
- Emphasis on convenience of handling small amounts of data (10’s of Mbytes) in context of large amounts of data acquired
- Remoteness emphasizes heavy use of simulation

- R.Helmke -  LBL GAN Mtg

- 8/26/2002

## Remote Machine Studies - Design Phase Steps

- Meet with colleagues to agree on goals and plan of action
- Instrumentation will (presumably) involve insertion in accelerator - e.g. inside vacuum
- Precise location – survey data, geometry data base, CAD files
- Everything has to fit
- Has to have services – interact with many site groups and individuals

- R.Helmke -  LBL GAN Mtg

- 8/26/2002

## Remote Machine Studies – Design Phase Steps (cont.)

- Must satisfy safety requirements
- Personnel
- Equipment
- Possibly extensive software development
- There must be a compatible environment at home and site institutions.
- Instrument manufacture at both home and site institutions
- Home Institution Test
- Site installation team – includes home + site labs.
- Site test with installation team
- Remote test

- R.Helmke -  LBL GAN Mtg

- 8/26/2002

## Machine Studies Shift

- By the time ready to run a shift, solid relationship has to be in place between remote and site personnel
- Coordinate shift by shift plan between on-site and remote colleagues
- Devise a plan to handle reasonable contingencies (e.g. local operator override if link is lost)
- Communication of status of machine (at beginning and throughout shift
- (Full) Access to control system

- R.Helmke -  LBL GAN Mtg

- 8/26/2002

## Machine Studies Shift (cont.)

- Operate the accelerator
- Maintain close communication with on-site operator and site shift “responsible person”
- Acquire data – to remote site and/or remote access to local data store
- Preliminary scan of data before ending session to assure validity
- Post-shift procedures and check lists
- Analyze results
- Discuss results with colleagues

- R.Helmke -  LBL GAN Mtg

- 8/26/2002

## On-going Considerations

- On-going planning and coordination including ability to resolve differences when they arise
- Team building is essential
- Need for social interaction

- R.Helmke -  LBL GAN Mtg

- 8/26/2002