Sector test - 81/78 configuration & requirements

We will need:

Details below...

TI8

TI8 commissioned to the last TED before the LHC in 2008. The additional section between the TED and the LHC septa is relatively simple and will have to be commissioned with beam at the same time as the LHC injection test. The requirements for the transfer line commissioning are well described elsewhere. 

The main requirements for the injection test are a stable, well corrected, well matched trajectory with the designated emittance. Orthogonal Steering of injection point will be required. Interlocks/extraction inhibit, from various LHC elements will be required.

IR8 & Injection region

Need:

Full list of elements

Magnet circuits right of IP8

Septa inwards [MR8]

Circuit Name  Magnet Type Description Needed?
RQ5.R8 MQY Matching section individually powered Quadrupole Yes
RQ4.R8 MQY Matching section individually powered Quadrupole Yes
RD2.R8 MBRC Twin Aperture Separation dipole in IR(188mm). D2 Yes
RCBYH5.R8B2 MCBYH Horizontal corrector Yes
RCBYHS5.R8B2 MCBYH Horizontal corrector Yes
RCBYVS5.R8B2 MCBYV Vertical corrector Yes
RCBYV4.R8B2 MCBYV Vertical corrector Yes
RCBYVS4.R8B2 MCBYV Vertical corrector Yes
RCBYHS4.R8B2 MCBYH Horizontal corrector Yes

 

Inner Triplet right of 8 [XR8]

Circuit Name  Magnet Type(s) Description Needed?
RCBXH1.R8 MCBXH Inner triplet dipole corrector, horizontal Yes
RCBXH2.R8 MCBXH Inner triplet dipole corrector, horizontal Yes
RCBXH3.R8 MCBXH Inner triplet dipole corrector, horizontal Yes
RCBXV1.R8 MCBXV Inner triplet dipole corrector, vertical Yes
RCBXV2.R8 MCBXV Inner triplet dipole corrector, vertical Yes
RCBXV3.R8 MCBXV Inner triplet dipole corrector, vertical Yes
RCOSX3.R8   Skew Octupole Corrector No
RCOX3.R8   Octupole Corrector No
RCSSX3.R8   Skew Sextupole corrector No
RCSX3.R8   Sextupole corrector No
RCTX3.R8   Dodecapole Corrector No
RD1.R8 MBX Single aperture separation dipole. D1 in IL8 and IR8 Yes
RQSX3.R8 MQSX Skew quadrupole corrector (a2) in between Q2 and Q3 Yes
RQX.R8 MQXA, MQXB Inner Triplet (Q1,Q2,Q3 in series) Yes

Beam Instrumentation left of 2 (as for right 8)

LHCb

RBLWH.R8.SR8 OFF
RBXWH.L8.SR8 OFF
RBXWSH.L8.SR8 OFF
RBXWSH.R8.SR OFF

Left of IP8

Inner triplet left of IP [XL8]

Circuit Name  Magnet Type(s) Type Needed?
RCBXH1.L8 MCBXH Horizontal corrector Yes
RCBXH2.L8 MCBXH Horizontal corrector Yes
RCBXH3.L8 MCBXH Horizontal corrector Yes
RCBXV1.L8 MCBXV Vertical corrector Yes
RCBXV2.L8 MCBXV Vertical corrector Yes
RCBXV3.L8 MCBXV Vertical corrector Yes
RCOSX3.L8   Skew Octupole Corrector No
RCOX3.L8   Octupole Corrector No
RCSSX3.L8   Skew Sextupole corrector No
RCSX3.L8   Sextupole corrector No
RCTX3.L8   Dodecapole Corrector No
RD1.L8 MBX Recombination dipole Yes
RQSX3.L8 MQSX Skew Quadrupole Corrector  Yes
RQX.L8 MQXA, MQXB Inner Triplet (Q1,Q2,Q3 in series) Yes

Inner triplet quadrupoles as for L2.

1.1.2.     Matching section  L8 [ML8]

RCBCHS5.L8B2 MCBCH Dipole Corrector in MCBCA(B,C,D), Horizontal Yes
RCBCV5.L8B2 MCBCV Dipole Corrector in MCBCA(B,C,D), Vertical Yes
RCBCVS5.L8B2 MCBCV Dipole Corrector in MCBCA(B,C,D), Vertical Yes
RCBYH4.L8B2 MCBYH Dipole Corrector in MCBYA(B), Horizontal Yes
RCBYHS4.L8B2 MCBYH Dipole Corrector in MCBYA(B), Horizontal Yes
RCBYVS4.L8B2 MCBYV Dipole Corrector in MCBYA(B), Vertical Yes
RD2.L8 MBRC Twin Aperture Separation dipole in IR(188mm). D2 Yes
RQ4.L8 MQY Matching section individually powered Quadrupole Yes
RQ5.L8 MQM Quadrupole in the insertions (3.4 m) Yes

Dispersion Suppressor L8

Dispersion Suppressor: Q8, Q9, Q10, Q11, Q12, Q13 commissioned, powered and cold, plus dipole correctors as listed below.

Circuit Name Magnet Type  Description Needed?
RQ6.L8 MQM, MQML Matching section individually powered Quadrupole Yes
RQ7.L8 MQM Quad Yes
RQ8.L8 MQML Quad Yes
RQ9.L8 MQM, MQMC Dispersion suppressor individually powered Quadrupole Yes
RQ10.L8 MQML Dispersion suppressor quad Yes
RQTL11.L8B2 MQTLI Dispersion suppressor trim quad Yes
RQT12.L8B2 MQT Extended D. S. Tuning trim quad Yes
RQT13.L8B2 MQT Extended D. S. Tuning trim quad Yes
RCBCH6.L8B2 MCBCH Dipole Corrector in MCBCA(B,C,D), Horizontal Yes
RCBCV7.L8B2 MCBCV V Corrector Yes
RCBCH8.L8B2 MCBCH H Corrector Yes
RCBCV9.L8B2 MCBCV V Corrector Yes
RCBCH10.L8B2 MCBCH H Corrector Yes

 


Arc 78

Powering: The full complement of magnet circuits is shown in table . Clearly not all of these circuits will be required for the single pass injection test and the potential need for each circuits is indicated in the priority column: 1 is essential, 3 is not needed. Clearly only need beam 1 circuits.

The test is taking place at 450 GeV and the need to push the circuits all the way to top energy will not be required. The effect of cycling the main bends is an option, but the 5 TeV equivalent does not necessarily need to be used as the high point of a magnetic cycle. Clearly the magnets, cryogenics, quench protection system, vacuum system, energy extraction system, interlock systems will have to have been commissioned as planned.

  Magnet Type Number of circuits/Beam 2 Priority
Main bends MBA/MBB 1 1
Lattice quadrupoles MQ 2 1
Skew quadrupoles MQS 1 1
Lattice sextupoles MS 4 2
Skew sextupoles MSS 1 3
Lattice octupoles MO 2 3
Tuning quadrupoles MQT 2 1
Sextupole spool pieces MCS 1 2
Octupole spool pieces MCO 1 3
Decapole spool pieces MCD 1 3
Orbit correctors MCBV/MCBH 24 + 23 1

 

Class Type Circuit
Main bends MB RB.A23
Main quads MQ RQD.A23
Main quads MQ RQF.A23
Skew quads MQS RQS.A23B2
Trim quads MQT RQTD.A23B2
Trim quads MQT RQTF.A23B2
Sextupoles MS RSD1.A23B2
Sextupoles MS RSD2.A23B2
Sextupoles MS RSF1.A23B2
Sextupoles MS RSF2.A23B2
Skew sextupoles MSS RSS.A23B2
Lattice octupoles D MO ROD.A23B2
Lattice octupoles F MO ROF.A23B2
b3 spool MCS RCS.A23B2. 
Octupole spool MCO RCO.A23B2
Decapole spool MCD RCD.A23B2

Dump on collimators IR7

More details here

Circuit Name Description Needed?
RQT13.R7B2   Yes
RQT12.R7B2   Yes
RQTL11.R7B2   Yes
RQTL9.R7B2   Yes
RQTL10.R7B2   Yes
RQTL8.R7B2 Dispersion suppressor quad [MQTLI] Yes
RQTL7.R7B2 Matching Trim Quadrupole [MQTLI Insertion Region Long Trim Quadrupole Inertia Tube Type] Yes
RQ6.R7B2 Matching cold quadrupole composed of 6 long trim quads in series [MQTLH] Yes
RCBCH10.R7B2 Corrector Yes
RCBCV9.R7B2 Corrector Yes
RCBCH8.R7B2 Corrector Yes
RCBCV7.R7B2 Corrector Yes
RCBCH6.R7B2 Corrector Yes

MQTLH -> 4.5 K (nominal: 400 A, 90 T/m) > 4.5 K (nominal: 400 A, 90 T/m)
MQTLI -> 1.9 K (nominal: 550 A, 125 T)

 


ARC 23 Orbit Correctors

Horizontal Orbit correctors

RCBH12.L8B2
RCBH12.R7B2
RCBH14.L8B2
RCBH14.R7B2
RCBH16.L8B2
RCBH16.R7B2
RCBH18.L8B2
RCBH18.R7B2
RCBH20.L8B2
RCBH20.R7B2
RCBH22.L8B2
RCBH22.R7B2
RCBH24.L8B2
RCBH24.R7B2
RCBH26.L8B2
RCBH26.R7B2
RCBH28.L8B2
RCBH28.R7B2
RCBH30.L8B2
RCBH30.R7B2
RCBH32.L8B2
RCBH32.R7B2
RCBH34.L8B2

Vertical Correctors

RCBV11.L8B2
RCBV11.R7B2
RCBV13.L8B2
RCBV13.R7B2
RCBV15.L8B2
RCBV15.R7B2
RCBV17.L8B2
RCBV17.R7B2
RCBV19.L8B2
RCBV19.R7B2
RCBV21.L8B2
RCBV21.R7B2
RCBV23.L8B2
RCBV23.R7B2
RCBV25.L8B2
RCBV25.R7B2
RCBV27.L8B2
RCBV27.R7B2
RCBV29.L8B2
RCBV29.R7B2
RCBV31.L8B2
RCBV31.R7B2
RCBV33.L8B2
RCBV33.R7B2

Feedboxes and Power interlock controllers

Powering Subsector

Description

PIC

DFB

A23

 Arc 7-8 cryostat (right side) + Match. section

 CIPCA.R7

 

A23

 Arc 7-8 cryostat (left side) + Match. section

 CIPCA.L8

 

ML8

 Matching section in L8

 CIPCM.L8

 

XL8

 Inner triplet in L8

 CIPCX.L8

 

XL2

 Inner triplet in L2

 CIPCX.L2

 

ML2

 Matching sections in L2

 CIPCM.L2

 

 

 

 

 

 

plus 3 beam interlock controllers and injection BIC