LOGO CEPC Partial Double Ring Lattice SU Feng

LOGO CEPC Partial Double Ring Lattice SU Feng WANG Dou XIAO Ming GAO Jie GENG Huiping XU Gang DUAN Zhe BAI Sha BIAN Tianjinan Key Laboratory of Particle Acceleration Physics and Technology Institute of High Energy Physics Chinese Academy of Sciences 2015. 10. 23

Outline u Layout u Orbit u Parameter u Next to do

CEPC Partial Double Ring Layout RF IP 1_ee RF 3 Km 1/2 RF IP 4_pp IP 2_pp 1/2 RF C=54710. 4 m IP 1_ee/IP 3_ee, 3 Km RF IP 3_ee RF IP 2_pp/IP 4_pp, 1132. 8 m 4 Straights, 849. 6 m 4 Long ARC, 120*FODO, 5852. 8 m SU Feng 4 Short ARC, 100*FODO, 4908. 8 m 2015. 10. 12

CEPC Partial Double Ring Layout 16 62. 5 urad 4. 5 m 111. 03 m 256 m B 2 B 3 614. 4 m B 1 7 30 m . 2 m Full crossing angle 30 mrad 15 mrad 8. 852 m Dipole 46 2. 1 2000. 6 m B 6 IP B 4 For CEPC 120 Ge. V beam: ØMax. deflection per separator is 66μrad. Using Dipole after seperator to acquire 15 mrad B 5 Version 0. 3 sufeng 2015. 10. 20

Orbit (DR_RING_e 1) Version 0. 3 X(m) 10 5 0 0 -5 -10 500 1000 1500 2000 2500 3000 3500 4000 4500

Orbit (DR_RING_e 1 L) Version 0. 3 X(m) 10 8 6 4 2 0 0 500 1000 1500 2000 2500

Dipole Strength Version 0. 3 Angle(mrad) L(m) Rho(m) Brho(E 0/c) (T/m) B(T) Ek(Ke. V) B 0 3. 506 19. 6 5590. 42 400 0. 07155 685. 173 Bsp 0. 0625 4. 9 78400 0. 00510 48. 8571 B 1 a 2. 13 19. 6 9201. 88 400 0. 04347 416. 263 B 1 b 2. 57 19. 6 7626. 46 400 0. 05245 502. 251 B 1 c 2. 30 19. 6 8521. 74 400 0. 04694 449. 486 B 2 2. 5 19. 6 7840 400 0. 05102 488. 571 B 3 2. 5 19. 6 7840 400 0. 05102 488. 571

Survey & Dynamic Aperture （Version 0. 3）

Version 0. 3 + FFS L=340 m L*=1. 5 m Betax=0. 03 m Betay=0. 8 m X 0 -0, 5 -1 -1, 5 -2 -2, 5 0 100 200 300 400 500 600 700 800

Version 0. 3 + FFS X 12 10 8 6 4 2 0 -4 -6 -8 ? 500 1000 1500 2000 X 2500 3000 3500 4000 4500

Survey & Dynamic Aperture （Version 0. 3 +FFS） DA?

CEPC Partial Double Ring Layout 16 62. 5 urad 4. 5 m 111. 03 m 256 m B 2 B 3 614. 4 m B 1 7 30 m . 2 m Full crossing angle 30 mrad 15 mrad 8. 852 m seperator 46 2. 1 2000. 6 m B 6 IP B 4 For CEPC 120 Ge. V beam: ØMax. deflection per separator is 66μrad. Using Dipole after seperator to acquire 15 mrad B 5 Version 0. 4 sufeng 2015. 10. 21

Electrostatic Separator in LEP L=4. 5 m Lelectrode=4. 0 m Efield=2 MV/m E=55 Ge. V Angle=145 urad

Electrostatic Separator

Orbit (DR_RING_e 1) Version 0. 4 Electrostatic Seperator

Electrostatic Separator & Dipole Seperator : n=16 L=4. 5 m angle=62. 5 urad Dipole: n=16 L=4. 5 m angle=62. 5 urad

Electrostatic Separator & Dipole Seperator : n=16 L=4. 5 m angle=62. 5 urad Dipole: n=16 L=4. 5 m angle=62. 5 urad

Electrostatic Separator

Electrostatic Separator

Electrostatic Separator

Electrostatic Separator 存在的问题： l Electrostatic Separator的特点，参数指标和性能进一步调研 l 如何安装 l Orbit l 色散

Next to do 1. Electrostatic Separator 调研，安装，匹配 2. Add IR（FFS） 3. Dynamic Aperture 4. Optimization

Reference [1] CEPC-SPPC Preliminary Conceptual Design Report, The CEPC-SPPC Study Group, IHEP-CEPC-DR-2015 -01. [2] J. Gao, IHEP-AC-Note-2013 -012. [3]Xiao Ming et al, CEPC_bunch_train _ 2015 -8 -28 [4]Oridy, FCC-ee_150917 [5] P. Raimondi, Status on Super. B effort, La Thuile, March 11, 2006 [6]W. Kalbreier, et al, “Layout, design and construction of the electrostatic separation system of the LEP e+e- collider”, CERN, Geneva, Switzerland. [7] R. Martin, et al, “Status of the FCC-ee interaction region design”, HF 2014 Workshop, Beijing, China, 9 -12 October, 2014

LOGO

Version 0. 3 + FFS X 12 10 8 6 4 2 0 0 500 1000 1500 2000 2500