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OPERATIONAL INTERLOCKS IN THE SPS EXPERIMENTAL AREAS
(EA UNSAFE)
N. Doble, K. Elsener, L. Gatignon, P. Grafström
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Beam
H1
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This beam no longer exists.
Both TAX are put in dump position and the control cables will be
disconnected. |
| Beam
H3
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This beam will normally be run with Bends 2+3
limited and large range.
The interlock would also allow bends unlimited and small range. |
| Range |
Holes available |
| XTAX012023 |
XTAX012024 |
| Small |
Dump position
Ø = 12 mm with 120 cm Be
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Dump position
Ø = 12 mm with 80 cm Be |
| Medium |
Ø= 12 mm |
Ø= 12 mm |
| Large |
60 x 40 mm2 racetrack
80 x 50 mm2 racetrack |
65x 44 mm2 racetrack
85 x 52 mm2 racetrack |
| Beam
H2
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The allowed conditions for this beam are
- Bends 2+3 limited and large range
- Bends unlimited and small range |
| Range |
Holes available |
| XTAX021023 |
XTAX021025 |
| Small |
Dump position
Ø = 12 mm with 80 cm Be
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Dump position
Ø = 12 mm with 120 cm Be |
| Medium |
Ø= 12 mm
Ø= 64 mm (for sec. beams) |
Ø= 12 mm
Ø= 64 mm (for sec.beams) |
| Large |
Ø= 64 mm with vacuum,
aligned only with ion beam
from T2 splitter. |
Ø= 64 mm with vacuum,
aligned only with ion beam
from T2 splitter. |
| Beam
H4
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The allowed conditions for this beam are
- Bends 3+4 limited and large range
- Bends unlimited and small range |
| Range |
Holes available |
| XTAX022023 |
XTAX022025 |
| Small |
Dump position
Ø = 12 mm with 160 cm Be
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Dump position
Ø = 4.2 mm
Ø = 6.0 mm |
| Medium |
Ø= 12 mm
Ø= 12 mm |
Ø= 5.0 mm
Ø= 7.2 mm |
| Large |
Ø= 64 mm |
Ø= 16 mm
Ø = 64 mm |
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Beam
H6
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No operational interlock required, as the beam is
inherently limited to 205 GeV/c by magnet strength. |
| Beam
H8
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The allowed conditions for this beam are:
- Bends 1+2 limited and large range
- Bends unlimited and small range on XTAX042020 (only!)
plus XCIO042200 in (Ø= 3 mm hole)
plus microcollimator in beam and opening < 1 mm.
At all positions (incl. dump) there are 80 x 42 mm2 holes to
let the H6 beam pass through. |
| Range |
Holes available |
| XTAX042018 |
XTAX042020 |
| Small |
Dump position
Ø = 12 mm with 80 cm Be
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Dump position
Ø = 2.0 mm |
| Large |
Ø= 80 mm |
Ø= 80 mm |
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Beam
P41/P42
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No operational interlock required:
Beam runs into underground machine area. |
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Beam
P61/P62
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No operational interlock required:
Beam runs into underground machine area1. |
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Beam
M2
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No operational interlock needed:
This beam is limited to < 300 GeV/c by magnet strength. |
During ion periods, these operational interlocks can be overruled if the
areas are put in ion mode (key in BA) and the HEAVY ION (not deuteron) signals
comes from the PS+SPS.
1) During heavy ion operation an interlock (medium
range) is normally activated, but only for equipment protection.
Last updated on 21 Feb 97 by
L.Gatignon
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