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1 Sector Test – Sector Test – Preparation Preparation Layout in LSS7 Layout in LSS7 Jan Uythoven (AB/BT) Thanks to Mike Lamont and the other ‘sector testers’
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Sector Test – PreparationSector Test – PreparationLayout in LSS7Layout in LSS7
Jan Uythoven (AB/BT)
Thanks to Mike Lamont and the other ‘sector testers’
Jan Uythoven, AB/BT
Chamonix@Divonne 2006, Layout in LSS7
Page 2
Sector Test:Sector Test:LSS7LSS7
Conditions and layout should be as close as possible to the final situation from injection to LSS7.R
By definition this is not possible for LSS7.R as this is the end of the sector to be tested
Beam 2
Beam
Dump
Shielding
Dispersion Suppressor
Long Straight SectionIP7
Jan Uythoven, AB/BT
Chamonix@Divonne 2006, Layout in LSS7
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What should not be What should not be installed in LSS7installed in LSS7
D4 and everything towards the IP not installed or not required
D3 may be installed, but will not see any beam Check interference with shielding behind dump
No collimators installed (no TCP, TCHS, TCM, TCG) Q6 & DFBM should be installed
Consists of 6 x MQTLH, not part of dispersion suppressor (up to Q8) Presently confirmed to be ready
not installed
DFBM
Jan Uythoven, AB/BT
Chamonix@Divonne 2006, Layout in LSS7
Page 4
Installation of Beam Dump Installation of Beam Dump in LSS7in LSS7
Temporary installation Beam dump same type as used for TI 8 tests
But SPS type transport system attached to it, to avoid installation of fixings in the ceiling
Positioned on temporary support (blocks)
‘Borrowed’ from TI 2 No additionally radiated equipment
Beam dump in place in TI 8 (smaller tunnel)
Additional shielding as used in TI 8
End of beam pipe
Jan Uythoven, AB/BT
Chamonix@Divonne 2006, Layout in LSS7
Page 5
Position of temporary Position of temporary dumpdump
not installed
Space for QRL return modulePosition dump at sufficient
distance from QRL return module:- mechanical interference- radiation
Q6 29 m
Jan Uythoven, AB/BT
Chamonix@Divonne 2006, Layout in LSS7
Page 6
Beam Dump AreaBeam Dump Area
Transport and installation of beam dump and additional shielding Need to be integrated in LHC planning
Path taken for the transport Time required for transport and installation (2 – 3 days) Possibly obstruct passage once installed
Details of obstruction from drawing with dump in position Assume 4 weeks for installation, operation, cool down,
removal Radiation issues
Remnant radiation: will effect access conditions after tests Check with work planned in this area
Need of radiation monitoring See talk of Helmut Vincke
Jan Uythoven, AB/BT
Chamonix@Divonne 2006, Layout in LSS7
Page 7
Other additional Other additional equipmentequipment
Additional BDI BCT half way between Q6 and beam dump: measure the intensities dumped on
the TED Additional BDI NOT installed
BLMs As there should be some already on Q6 BPM at Q6 will also indicate beam, besides the screen Radiation monitors near dump are foreseen
BTV Standard BTV installed less than 1 m in front of Q6
Vacuum pipe between sector valve on Q6 up to the beam dump Proposed is 4 sections of about 7 m each Stops about half a meter before dump, standard AlTi window with CC protection
against implosion The VADL installed on the left of Q6 includes an ion pump + pirani + penning
gauge for the part left of the sector valve No additional vacuum pumping or instrumentation required
Jan Uythoven, AB/BT
Chamonix@Divonne 2006, Layout in LSS7
Page 8
Access & VentilationAccess & Ventilation
Additional access door Temporary access door about 800 m in the arc 7 – 6 Access to part of sector 6 – 7 will not be possible
At least one day before the test (closing the zone) during the beam tests 2 – 3 days following the tests
See talk Pierre Ninin on the Temporary Access System
Collimation ventilation doors will not be installed For handling radioactive air produced at the collimators Not an issue for the sector tests (no collimators) Don’t want the doors, or chicanes for final layout, to ease
transport of equipment
Jan Uythoven, AB/BT
Chamonix@Divonne 2006, Layout in LSS7
Page 9
ConclusionsConclusions
Layout in LSS7 as will be used for the sector test will be identical to the nominal situation up to and including Q6.R7
Only additional equipment foreseen: Beam dump: TED from TI 2 and additional shielding BCT in front of TED Vacuum chamber between Q6 and TED
To be studied in more detail Transport of TED Effect of TED installation and radiation issues on the general
LHC planning Detailed layout drawing for sector test set-up in LSS7 to be
made in the coming months
