ABS project September 98

1
ABS (Past) Present Future
Marine Pace for the ABS team
2
A B S (PAST) PRESENT FUTURE

• A bit of history
• Present communication architecture
• Present status
• operational corrections
• strong points w.r.t. to-be-improved /weak
  points
• Short-term objectives

3
A BIT OF HISTORY

• ABS 1st generation (1996)
• Principle
• 1 program specific to each correction
• Micado Mathematica based
• Some limitations
• lack of flexibility versus changes - Heavy to
  maintain to upgrade
• dependence on energy (1 energy lt-gt 1 program)
• ABS 2nd generation (1998 )
• Aim address above limitations
• data driven program
• 1 generic correction module, linkable from any
  measurement program

4
Communication architecture
5
Difficulties encountered along installation

• Version 1999 problems
• Lack of Human Resources
• Unsatisfactory response time
• Database design longer than foreseen
• User interface too specialist (confusing)
• Correction diverged if actual tune theo. tune
• Version 2000 (in operation)
• Above problems addressed
• Being stabilized

6
PRESENT STATUSSTRONG POINTS

• New corrections definition easy quick
• Ex TT2 optics for TOF (lt1 hour)
• Database program easier maintenance
• Independence versus energy
• Database reference centralized optics
• PS Complex, TT2, SPS ring, (TT10)
• Correction program same look-and-feel

7
PRESENT STATUSWEAK / IMPROVABLE POINTS

• Design limitations theoretical matrices
• Limitations inherent to genericity (!)
• Database edition for specialists
• PS 26G/c orbit algorithm to be optimised

8
PRESENT STATUS OPERATIONAL CORRECTIONS

• PSB
• Injection trajectory
• Ejection trajectory
• CPS
• Closed orbit at low energy
• Coherent oscillations at injection
• Fully PPM since 2000
• Injection bump oscillation (specialist)
• TT2 steering for all types of beams optics
• p AD, p TSTAD, p SFT, p LHC, e, Lead ions

9
SHORT-TERM OBJECTIVESNEW CORRECTIONS

• TT2-TT10 steering
• Human resources specification ready
• Slow progress (wait for PS/CO Java environment)
  -gt 2001
• Coherent oscillations PS (multi-turn pu)
• Benefit tune-independent correction, ions
  protons
• Under validation
• AD closed orbit (?2 G/c)
• Effort link of L.Bojtar program to ABS
  correction module validation of DB data
• AD injection line steering
• East Hall steering
• Effort data description in DB. Program ready.

10
OBJECTIVES 2000 STUDIES

• PS Qpolar oscillations correction using Q pu
• Merging of several corrections into 1 program
• PSB to PS steering of the 4 rings
• PS coherent oscillations
• Performance analysis of operational correction
  schemes
• Matrices redundancy / lack of correctors w.r.t.
  monitors
• ABS studies for CLIC
• Statistics collection from ABS corrections
• Build measured matrix from ABS outputs. Compare
  with theoretical matrix.
• gt Andreas talk

11
CONCLUSION

• Human Resource limited activity
• All people involved part-time (?50)
• gt NO immediate answer to request
• Most of studies performed by A.Jansson
• (PhD student, leaves end 2000)
• gt full time HR requested