LHC Collimator – RF Contact Concept (180o wrap) FINGERS GROUND JAWS TO TANK, ALLOW JAW MOTION FOR APERTURE VARIATION ROUND-TO-SQUARE TRANSITION INTEGRAL WITH VACUUM TANK RAMPS BRIDGE GAP BETWEEN TANK AND JAW RF180 contact 7/18/05 rev 7/19

5o BREAK CONFORMS TO JAW TAPER TAPERED END

SLIDING FIT ALLOWS JAW ROTATION RAMP WRAPS 180o FLEXURE ALLOWS RAMP TO FOLLOW JAW FOR APERTURE ADJUSTMENT SLIDING CONTACT ALLOWS RAMP MOTION

SLOTS. 5mm WIDE X 6mm DEEP REDUCE THERMAL DEFLECTION SLOTS .5mm WIDE X 6mm DEEP REDUCE THERMAL DEFLECTION. RF EFFECTS UNKNOWN. WALL OF VACUUM TANK (NOT SHOWN) PROVIDES CONTINUITY COMPLEX SECTION, RAMPING TO EDGE OF JAW SQUARE ROUND

RADIALLY MOVEABLE STOP PREVENTS APERTURE REDUCTION DUE TO THERMAL DEFORMATION

COMPLEX SHAPE OF RF-ENCLOSED VOLUME