W. Hofle / G. Kotzian / D. Valuch PU Choices for ADT - Plan for Run 2 14 April 2014 - LBOC

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PU Choices for ADTPlans for Run 2

ADT Team

W. Hofle / G. Kotzian / D. Valuch PU Choices for ADT - Plan for Run 2 14 April 2014 - LBOC

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IP4

beam 2

beam 1

Q7LQ9L Q9RQ7RH.M2.B2H.M1.B2V.M1.B2V.M2.B2

V.M2.B1V.M1.B1H.M1.B1H.M2.B1

beam 2

beam 1

SR4

[V]

[H]

[V]

[H]

[H]

[V]

[H]

[V]

Point 5Point 3 UX451

BPos Q9

BPos Q7

DSPU M1

DSPU M2

BPos Q9

BPos Q7

DSPU M1

DSPU M2

BPos Q9

BPos Q7

DSPU M1

DSPU M2

BPos Q9

BPos Q7

DSPU M1

DSPU M2

SR4

Bpos – Beam Position ModuleDSPU – Digital Signal Processing Unit

Overview of ADT System (run 1)

W. Hofle / G. Kotzian / D. Valuch PU Choices for ADT - Plan for Run 2 14 April 2014 - LBOC

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Pickup Q7

Beam position module

Q7

Pickup Q9

Beam position module

Q9 Analogue output to the power amplifiers

Digital signal processing unit

DAC

Gain control (CCC)

CLEANING

DAC

Pickup Qx

Beam position module

Qx

Pickup Qx

Beam position module

Qx

DACBeam transfer function meas.

Observation box

Tune/instability

diagnostics box

Fast b-by-b Instability

diagnostics

CCC, users, logging

Overview for one damper (ADT)

Requirements for PU:• coupler type pick-ups (BPMC) choice of Q7, Q8, Q9, Q10 (as PUs available) • dedicated to ADT• high beta function (> 100 m)• low dispersion an advantage • must be in IR4, cabling to surface as short as possible

Run 1:2 PU / beam / plane

Post LS1:2 additional PU / beam / plane

W. Hofle / G. Kotzian / D. Valuch PU Choices for ADT - Plan for Run 2 14 April 2014 - LBOC

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Pickups for ADT after LS1 as presented at LMC: 5th Feb 2014

B1 horizontal

Q10L Q9L Q7L Q7R Q9R Q10R

b = 28 m b = 127 m b = 112 m b = 78 m b = 16 m b = 158 m

existing existing new new

B1 vertical

Q10L Q9L Q7L Q7R Q9R Q10R

b = 172 m b = 25 m b = 52 m b = 127 m b = 138 m b = 38 m

new new existing existing

B2 horizontal

Q10L Q9L Q7L Q7R Q9R Q10R

b = 164 m b = 17 m b = 60 m b = 173 m b = 106 m b = 30 m

new new existing existing

B2 vertical

Q10L Q9L Q7L Q7R Q9R Q10R

b = 36 m b = 140 m b = 169 m b = 23 m b = 34 m b = 181 m

existing existing new new

All PUs are couplers (BPMC type) that already exist, high beta preferable

v.6.503

W. Hofle / G. Kotzian / D. Valuch PU Choices for ADT - Plan for Run 2 14 April 2014 - LBOC

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Pickups for ADT after LS1 New proposal with new optics use four Q8 PU

B1 horizontal

Q10L Q9L Q7L Q8R Q9R Q10R

b = 32 m b = 111 m b = 106 m b = 133 m b = 19 m b = 153 m

existing existing new new

B1 vertical

Q10L Q9L Q8L Q7R Q9R Q10R

b = 175 m b = 54 m b = 155 m b = 161 m b = 142 m b = 46 m

new new existing existing

B2 horizontal

Q10L Q9L Q8L Q7R Q9R Q10R

b = 158 m b = 22 m b = 96 m b = 150 m b = 101 m b = 29 m

new new existing existing

B2 vertical

Q10L Q9L Q7L Q8R Q9R Q10R

b = 44 m b = 160 m b = 167 m b = 151 m b = 56 m b = 180 m

existing existing new new

All PUs are couplers (BPMC type) that already exist, high beta preferable

W. Hofle / G. Kotzian / D. Valuch PU Choices for ADT - Plan for Run 2 14 April 2014 - LBOC

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Implementation of the new proposalo ADT: extension of 4 pairs of cables from Q7 to Q8’s

• Four cables on each side of IR4 to be pulled (each 55 m, 7/8”)• space available on cable trays (inspection done, M. Gasior, D. Valuch)

o Proposal to swap between BI and ADT (Q8 vs Q7)• Four cables 3/8” on each side of IR4 (each 55 m) to be pulled and spliced to

existing cables that end at Q8’s • BPMC.8R4, both beams, all planes were used for beam presence flag (BPF)

half of signals for this will now come from the Q7’s; b-functions not relevant for BPF

• BPMC.8L4 were used for developments by BI, can cope with a swap• Overall proposal means (changes in red)

• BPMC.8L4.B1 H BI BPMC.8L4.B1 V ADT• BPMC.8L4.B2 H ADT BPMC.8L4.B2 V BI• BPMC.7L4.B1 H ADT BPMC.7L4.B1 V BI• BPMC.7L4.B2 H BI BPMC.7L4.B2 V ADT• BPMC.7R4.B1 H BI BPMC.7R4.B1 V ADT• BPMC.7R4.B2 H ADT BPMC.7R4.B2 V BI• BPMC.8R4.B1 H ADT BPMC.8R4.B1 V BI• BPMC.8R4.B2 H BI BPMC.8R4.B2 V ADT

W. Hofle / G. Kotzian / D. Valuch PU Choices for ADT - Plan for Run 2 14 April 2014 - LBOC

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Estimated improvements for ADT (1)o S/N for pick-ups (reference: 1 pick-up @ b =100 m)

Run 1 (2 PU)Q7,Q9

Run 2 (4 PU)Q7,Q9,Q10

Run 2 (4 PU)Q7,Q8,Q9,Q10

Improvementwith BI swap

H.B1 3.8 dB 5.6 dB 7.0 dB 1.4 dB

V.B1 4.2 dB 7.4 dB 8.0 dB 0.6 dB

H.B2 4.4 dB 5.9 dB 8.0 dB 2.1 dB

V.B2 4.9 dB 6.6 dB 8.2 dB 1.6 dB

average improvement with BI/ADT swap: 1.4 dB (17 %)“un-natural Q7”: 4R.B1.H: 23 m

4L.B1.V: 86 m4L.B2.H: 23 m4R.B2.V: 15 m

NNS

N

nn

110

m100/logdB20

b

W. Hofle / G. Kotzian / D. Valuch PU Choices for ADT - Plan for Run 2 14 April 2014 - LBOC

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Estimated improvements for ADT (2)

Damper Run 1: b Run 2: b Improvementfactor

H.B1 (L4) 253 m 271 m 1.04

V.B1 (R4 160 m 268 m 1.29

H.B2 (R4) 204 m 263 m 1.14

V.B2 (L4) 306 m 336 m 1.05

o Kickers: improvement proportional to b1/2

• design peak kick strength 7.5 kV is 2 m rad (450 GeV/c); assumed b=100 m

• cf. design impact on beam is factor 1.6 higher for H.B1, V.B1, H.B2, and 1.8 higher for V.B2 (because b ’s much higher than 100 m)

• cf. to run 1 optics, the new optics brings further improvement for all beams and planes

W. Hofle / G. Kotzian / D. Valuch PU Choices for ADT - Plan for Run 2 14 April 2014 - LBOC

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Conclusion

For ADT:new optics + swap of four Q7/Q8 PU planes ADT BI improvement for pick-up signals (signal-to-noise) improvement of maximum kick strength

requires additional cabling between Q7 and Q88x55 m 7/8” cables to be pulled in tunnel for ADT8x55 m 3/8” cables to be pulled in tunnel for BI