1. PS/SPS Days Roberto Losito/Oliver Aberle 13th January 2004
How to get reliable PSB sieve and PS&SPS
dumps for 2006?

2. Overview Internal dumps Sieve Beam stoppers TIDVG Summary 13.01.05
PS/SPS days

3. PS internal dumps
Installed dump 47 operational (control unit problems)
Dump 48 mechanically ok
Spare in radioactive storage, control problem?
Transportation problem solved, lifting device will be tested these days
Working space (bunker, INB) found by R. Brown, ready within 3 weeks
PS/SPS days

4. PS internal dumps Reference dump Dump 48 mechanically updated
Water bellows to be changed
Water and electrical connectors to replace
Cabling to be replaced
Power supply to be changed
Check capturing magnet
Test intensively
Standardise control units
Reference dump
PS/SPS days

5. PS internal dumps Installed dump 47 stays Installation of dump 48
Upgrading of spare dump
Depending on schedule start up with dump 47 or replacement of dump 47 by spare dump
Upgrading of dump 47
New supports to simplify the alignment procedure
PS/SPS days

6. PS Sieve
Working since 1977
Originally designed for 1 mio. cycles, which has been reached in 1981
Material Graphite
Movement with air pistons
Water cooled
Not working reliably
No spare parts!
PS/SPS days

7. PS Sieve Short term (2005): Demount sieve from the machine
Maintenance on mechanical parts (Piston, water and air connections, bearings)
Adjust air and water pressure after lab tests
Reinstall sieve
PS/SPS days

8. PS Sieve
Long term (2006/2007):
Prepare two additional units with small design changes
Re-use vacuum tank or build new modified vacuum tanks?
Replace Graphite with CFC
Replace sieve actually installed
Prepare one complete spare unit
PS/SPS days

9. PS beam stoppers 33 stopper in the PS complex Different types
Stoppers in good general condition
Take stock of spare components
Annual maintenance of installed stoppers
PS/SPS days

10. SPS TIDVG Internal beam dump Length 4.5m C / Cu / Al / W core
22 tons cast iron shielding
water cooled
vacuum temp. measurement
vertical deflection
PS/SPS days

11. SPS TIDVG Ti foils to prevent from C particle contamination
Ti foil stretched over dump core materials
5 foils with overlap, not closed
Each foil end is lifted
PS/SPS days

12. SPS TIDVG Damaged Ti foil Length of damage: 30 mm
Height of foil displacement: 10 mm
Position: End of first foil/ circulating beam
PS/SPS days

13. SPS TIDVG Proposed modification:
Tests on graphite blocks covered by Ti foil (10-15mm from the edge). If successful
remove all Ti foils by cutting with special tool on spare TIDVG.
Same intervention on spare core
Modify the spare cast ion body of the TED to get a full spare TIDVG
Store the damaged TIDVG as back up
Installation of modified dump in April 2005
PS/SPS days

14. Summary
PS Dumps: Two upgraded dumps ready for startup 2006, spare in stand by.
PS sieve: 3 month to maintain the existing sieve, construction of a spare on the same design principle (in 2006).
PS beam stoppers: Inventory and annual maintenance, spare stoppers for 2006/07.
TIDVG: “Light” solution for time, manpower and budget reasons. Reinstallation within 3 months. Preparation of spare 2007.
PS/SPS days