Preliminary ion simulations for a Phase II system with cryogenic collimators
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1 Preliminary ion simulations for a Phase II system with cryogenic collimators G Bellodi, AB-ABP-HSL for the ion collimation team /// AB-ABP-LCU section meeting, 15/7/8
2 Phase I system performance IR7 dispersion suppressor Beam 1 E=2.76 TeV/u FLUKA material xsections for C,W Quench limit ~ 8.5 W/m Standard collimator settings: TCPs@6σ TCSs@7σ TCLAs@1σ TCTs@8.3σ Ideal machine η=.34 ~3% I limitation..
3 Standard Phase II collimators (TCSM metallic secondaries) IR7 dispersion suppressor Pb Pb 25 Pb 24 Tl Power load (W/m) Optical functions [m] Tl 22 others Phase I optics + Cu TCSMs activated at 7σ η=.36 MQ.8R7.B1 MQTLI.8R7.B1 MB.A9R7.B1 MB.B9R7.B1 MQ.9R7.B1 MQTLI.A9R7.B1 MQTLI.B9R7.B1 MB.A1R7.B1 MB.B1R7.B1 MQ.1R7.B1 MQTLI.1R7.B1 MB.A11R7.B1 MB.B11R7.B1 MQ.11R7.B1 MQTLI.11R7.B1
4 Proposed addition of cold Cu primary collimators in DS7 -ThWeiler TCRYO.AR7 TCRYO.BR7 TCRYO.AR7 at 3.19m from IP7 TCRYO.BR7 at from IP7 TCP TCSG TCSM TCRYO TCLA IR7 collimator settings in #σ
5 Changes in optics V Hor. beta Old optics new optics TCPs 2 15 TCRYO Hor. disp. Old optics new optics
6 Effect of optics change 2 Pb Pb Pb 24 Pb Power load (W/m) Optical functions [m] Tl 23 Tl 22 others Phase I collimation scheme + new optics η=.31 MQ.8R7.B1 MQTLI.8R7.B1 MB.A9R7.B1 MB.B9R7.B1 MQ.9R7.B1 MQTLI.A9R7.B1 MQTLI.B9R7.B1 MB.A1R7.B1 MB.B1R7.B1 MQ.1R7.B1 MQTLI.1R7.B1 MB.A11R7.B1 MB.B11R7.B1 MQ.11R7.B1 MQTLI.11R7.B1
7 Effect of optics change II 3 Collimator load distribution Loss map P ' (W/m) P COLL (W) TCTH.4L2.B1 TCTV.4L2.B1 TCTV.4R2.B2 TCP.6L3.B1 TCSG.5L3.B1 TCSM.5L3.B1 TCSG.4R3.B1 TCSM.4R3.B1 TCSG.A5R3.B1 TCSM.A5R3.B1 TCSG.B5R3.B1 TCSM.B5R3.B1 TCLA.A5R3.B1 TCLA.B5R3.B1 TCLA.6R3.B1 TCLA.7R3.B1 TCTH.4L5.B1 TCTV.4L5.B1 TCSG.4R6.B1 TCP.D6L7.B1 TCP.C6L7.B1 TCP.B6L7.B1 TCP.A6L7.B1 TCSG.B6L7.B1 TCSM.B6L7.B1 TCSG.A6L7.B1 TCSM.A6L7.B1 TCSG.B5L7.B1 TCSM.B5L7.B1 TCSG.A5L7.B1 TCSM.A5L7.B1 TCSG.D4L7.B1 TCSM.D4L7.B1 TCSG.C4L7.B1 TCSM.C4L7.B1 TCSG.B4L7.B1 TCSM.B4L7.B1 TCSG.A4L7.B1 TCSM.A4L7.B1 TCSG.A4R7.B1 TCSM.A4R7.B1 TCSG.B4R7.B1 TCSM.B4R7.B1 TCSG.A5R7.B1 TCSM.A5R7.B1 TCSG.B5R7.B1 TCSM.B5R7.B1 TCSG.C5R7.B1 TCSM.C5R7.B1 TCSG.D5R7.B1 TCSM.D5R7.B1 TCSG.E5R7.B1 TCSM.E5R7.B1 TCSG.6R7.B1 TCSM.6R7.B1 TCLA.A6R7.B1 TCLA.C6R7.B1 TCLA.E6R7.B1 TCLA.F6R7.B1 TCLA.A7R7.B1 TCTH.4L8.B1 TCTV.4L8.B1 TCTV.4R8.B2 TCTH.4L1.B1 TCTV.4L1.B1 IP1 IP2 5 IP3 IP4 1 IP5 15 IP6 IP7 2 IP8 25 IP1 Distance from IP1 (km) 1 5 Time development after first impact on collimator particles lost on collimators particles lost elsewhere particles in beam N TURN ~+3% higher load on TCP.B6L7 Less load on tertiaries (almost zero for TCTV.4L2) Different impact parameter distribution on collimators?..to be further studied..
8 PhaseII optics + collimators (TCRYOs retracted) 2 Collimator load distribution η= Loss map P ' (W/m) P COLL (W) TCTH.4L2.B1 TCTV.4L2.B1 TCTV.4R2.B2 TCP.6L3.B1 TCSG.5L3.B1 TCSM.5L3.B1 TCSG.4R3.B1 TCSM.4R3.B1 TCSG.A5R3.B1 TCSM.A5R3.B1 TCSG.B5R3.B1 TCSM.B5R3.B1 TCLA.A5R3.B1 TCLA.B5R3.B1 TCLA.6R3.B1 TCLA.7R3.B1 TCTH.4L5.B1 TCTV.4L5.B1 TCSG.4R6.B1 TCP.D6L7.B1 TCP.C6L7.B1 TCP.B6L7.B1 TCP.A6L7.B1 TCSG.B6L7.B1 TCSM.B6L7.B1 TCSG.A6L7.B1 TCSM.A6L7.B1 TCSG.B5L7.B1 TCSM.B5L7.B1 TCSG.A5L7.B1 TCSM.A5L7.B1 TCSG.D4L7.B1 TCSM.D4L7.B1 TCSG.C4L7.B1 TCSM.C4L7.B1 TCSG.B4L7.B1 TCSM.B4L7.B1 TCSG.A4L7.B1 TCSM.A4L7.B1 TCSG.A4R7.B1 TCSM.A4R7.B1 TCSG.B4R7.B1 TCSM.B4R7.B1 TCSG.A5R7.B1 TCSM.A5R7.B1 TCSG.B5R7.B1 TCSM.B5R7.B1 TCSG.C5R7.B1 TCSM.C5R7.B1 TCSG.D5R7.B1 TCSM.D5R7.B1 TCSG.E5R7.B1 TCSM.E5R7.B1 TCSG.6R7.B1 TCSM.6R7.B1 TCLA.A6R7.B1 TCLA.C6R7.B1 TCLA.E6R7.B1 TCLA.F6R7.B1 TCLA.A7R7.B1 TCTH.4L8.B1 TCTV.4L8.B1 TCTV.4R8.B2 TCTH.4L1.B1 TCTV.4L1.B1 IP1 IP2 IP3 IP4 IP5 IP6 IP7 IP8 IP Distance from IP1 (km) Time development after first impact on particles collimator lost on collimators particles lost elsewhere particles in beam N TURN
9 cont d Pb 26 Pb 25 Pb 24 Pb 23 Tl 23 Tl 22 others Power load (W/m) MQ.8R7.B1 MQTLI.8R7.B1 MB.A9R7.B1 MB.B9R7.B1 MQ.9R7.B1 MQTLI.A9R7.B1 MQTLI.B9R7.B1 MB.A1R7.B1 MB.B1R7.B1 MQ.1R7.B1 MQTLI.1R7.B1 MB.A11R7.B1 MB.B11R7.B1 MQ.11R7.B1 MQTLI.11R7.B1 Optical functions [m]
10 TCRYOs closed in 5 Pb 23 45σ Pb 22 Tl 21 Tl 2 Hg 198 Hg 197 Au 196 Au 195 others Tl 21 Au 196 others 3σ Power load (W/m) Optical functions [m] MQ.8R7.B1 MQTLI.8R7.B1 MB.A9R7.B1 MB.B9R7.B1 MQ.9R7.B1 MQTLI.A9R7.B1 MQTLI.B9R7.B1 MB.A1R7.B1 MB.B1R7.B1 MQ.1R7.B1 MQTLI.1R7.B1 MB.A11R7.B1 MB.B11R7.B1 MQ.11R7.B1 MQTLI.11R7.B1 MQ.8R7.B1 MQTLI.8R7.B1 MB.A9R7.B1 MB.B9R7.B1 MQ.9R7.B1 MQTLI.A9R7.B1 MQTLI.B9R7.B1 MB.A1R7.B1 MB.B1R7.B1 MQ.1R7.B1 MQTLI.1R7.B1 MB.A11R7.B1 MB.B11R7.B1 MQ.11R7.B1 MQTLI.11R7.B1 Power load (W/m) Optical functions [m]
11 TCRYOs at 15σ Collimator load distribution Loss map IP1 IP2 IP3 IP4 IP5 IP6 IP7 IP8 IP Distance from IP1 (km) P ' (W/m) P COLL (W) TCTH.4L2.B1 TCTV.4L2.B1 TCTV.4R2.B2 TCP.6L3.B1 TCSG.5L3.B1 TCSM.5L3.B1 TCSG.4R3.B1 TCSM.4R3.B1 TCSG.A5R3.B1 TCSM.A5R3.B1 TCSG.B5R3.B1 TCSM.B5R3.B1 TCLA.A5R3.B1 TCLA.B5R3.B1 TCLA.6R3.B1 TCLA.7R3.B1 TCTH.4L5.B1 TCTV.4L5.B1 TCSG.4R6.B1 TCP.D6L7.B1 TCP.C6L7.B1 TCP.B6L7.B1 TCP.A6L7.B1 TCSG.B6L7.B1 TCSM.B6L7.B1 TCSG.A6L7.B1 TCSM.A6L7.B1 TCSG.B5L7.B1 TCSM.B5L7.B1 TCSG.A5L7.B1 TCSM.A5L7.B1 TCSG.D4L7.B1 TCSM.D4L7.B1 TCSG.C4L7.B1 TCSM.C4L7.B1 TCSG.B4L7.B1 TCSM.B4L7.B1 TCSG.A4L7.B1 TCSM.A4L7.B1 TCSG.A4R7.B1 TCSM.A4R7.B1 TCSG.B4R7.B1 TCSM.B4R7.B1 TCSG.A5R7.B1 TCSM.A5R7.B1 TCSG.B5R7.B1 TCSM.B5R7.B1 TCSG.C5R7.B1 TCSM.C5R7.B1 TCSG.D5R7.B1 TCSM.D5R7.B1 TCSG.E5R7.B1 TCSM.E5R7.B1 TCSG.6R7.B1 TCSM.6R7.B1 TCLA.A6R7.B1 TCLA.C6R7.B1 TCLA.E6R7.B1 TCLA.F6R7.B1 TCLA.A7R7.B1 TCTH.4L8.B1 TCTV.4L8.B1 TCTV.4R8.B2 TCTH.4L1.B1 TCTV.4L1.B1 Load on TCRYOs <25σ no losses in the machine aperture! (for up to 15k particle statistics..) Time development after first impact on collimator particles lost on collimators particles lost elsewhere particles in beam N TURN
12 conclusions Exploratory study very promising Assess feasibility of changes in IR7 Repeat simulations for beam2 Optics not properly rematched Studied for ideal machine only, need to check performance with imperfections added Investigate similar approach for momentum cleaning in IR3 Heat load on cryogenic collimators?
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