1. J. Turner 1/26/06 SLAC PEPII Accelerator Physics LER Steering and Optics Motivation Steering Model Preparation Hysteresis Injection Tuning

2. SLAC PEPII Accelerator Physics J. Turner 1/26/06 Motivation Reduce orbit to minimize emittance. This unfortunately changes optics and degrades luminosity. To restore or repair optics from “where we are” has proven to be difficult. A clear difference to design would be useful in finding the biggest errors. So, loading a design magnet config and getting phase advance and MIA data and perhaps ORM there could be VERY illuminating.

3. SLAC PEPII Accelerator Physics J. Turner 1/26/06 Steering SVD minimize correctors initially gets out closed bumps, reduced corrector strengths. This is done with the minimize corrector flag turned on and proportion eigen values set to 0.4 or 0.5 depending which looks better. After minimize, then steer normal SVD to zero BPMs where real misalignments occur. This was VERY successful

4. SLAC PEPII Accelerator Physics J. Turner 1/26/06 LER orbit before and after

5. SLAC PEPII Accelerator Physics J. Turner 1/26/06 Model Preparation 33 cm BX* by 10 mm BY* created by Yuri in MAY 2004 Magnet configuration made by Jerry Yocky (and myself)

6. SLAC PEPII Accelerator Physics J. Turner 1/26/06 Horizontal Beta Picture of 33 by.1 lattice This slide courtesy of J. Yocky

7. SLAC PEPII Accelerator Physics J. Turner 1/26/06 Vertical Beta Picture of 33 by.1 lattice This slide courtesy of J. Yocky

8. SLAC PEPII Accelerator Physics J. Turner 1/26/06 Hysterisis “Knobbing to config” created problems with hysterisis which dominated injection and tune space. After restore those problems persisted...this is how we know it was hysterisis.

9. SLAC PEPII Accelerator Physics J. Turner 1/26/06 Injection Tuning Injection was kept through the stored septum Y bump and X angle.

10. SLAC PEPII Accelerator Physics J. Turner 1/26/06 Power supply list !TITLE=1422* 690:3.12 Design 10mm BY* 33cm BX* jt/jy PRIM MICR UNIT SECN ALIAS FILE CON DES ---- ---- ------ ---- ----------- ---- --------- --------- --------- LGPS,PR02, 312,BDES,,SCY3R03 -330.28 -330.28 -320.11 LGPS,PR02, 311,BDES,,SCY3R01 -330.28 -330.28 -320.11 LGPS,PR02, 310,BDES,,SCX3R03 95.131 95.131 74.167 LGPS,PR02, 309,BDES,,SCX3R01 95.131 95.131 74.167 LGPS,PR02, 308,BDES,,SCX2 70.737 70.737 77.573 LGPS,PR02, 307,BDES,,SCX1 70.737 70.737 77.572 LGPS,PR02, 306,BDES,,SCX1L -70.737 -70.737 -77.572 LGPS,PR02, 305,BDES,,SCX2L -70.737 -70.737 -77.572 LGPS,PR02, 210,BDES,,SK6 1.0412 1.0412 1.4776 LGPS,PR02, 209,BDES,,SK5 3.0280 3.0280 2.9944 LGPS,PR02, 208,BDES,,SK4.30507.30507 1.7035 LGPS,PR02, 207,BDES,,SK3 -.54840 -.54840 -.95084 LGPS,PR02, 206,BDES,,SK2 2.5780 2.5780 3.1027 LGPS,PR02, 205,BDES,,SK2L -1.1530 -1.1530 -1.5004 LGPS,PR02, 204,BDES,,SK3L.32343.32343.30687 LGPS,PR02, 203,BDES,,SK4L -.19061 -.19061 -2.5133

11. SLAC PEPII Accelerator Physics J. Turner 1/26/06 Power supply list LGPS,PR02, 202,BDES,,SK5L -2.6059 -2.6059 -3.1203 LGPS,PR02, 201,BDES,,SK6L -1.1735 -1.1735 -1.6531 STEP,PR02, 3022,BDES,,SK1R.45291.45291.53299 STEP,PR02, 2205,BDES,,SK1L -.28064 -.28064 -.27853 LGPS,PR02, 149,BDES,,QDS4 -15.718 -15.718 -13.101 LGPS,PR02, 148,BDES,,QFS3 23.525 23.525 23.644 LGPS,PR02, 147,BDES,,QDS2 -24.355 -24.355 -24.618 LGPS,PR02, 146,BDES,,QFS1 27.919 27.919 29.333 LGPS,PR02, 145,BDES,,QFS1L 26.035 26.035 27.828 LGPS,PR02, 144,BDES,,QDS2L -24.623 -24.623 -25.194 LGPS,PR02, 143,BDES,,QFS3L 23.867 23.867 24.000 LGPS,PR02, 142,BDES,,QDS4L -15.861 -15.861 -14.404 LGPS,PR02, 127,BDES,,QDBM6 -17.375 -17.375 -18.164 LGPS,PR02, 126,BDES,,QFBM5 16.189 16.189 15.168 LGPS,PR02, 124,BDES,,QDBM3 -26.129 -26.129 -29.026 LGPS,PR02, 122,BDES,,QFBM1 11.095 11.095 11.669 LGPS,PR02, 133,BDES,,QFCX1R2 20.891 20.891 21.170 LGPS,PR02, 132,BDES,,QFCX1R1 20.891 20.891 21.170 LGPS,PR02, 116,BDES,,QFBM1L 27.392 27.392 26.784 LGPS,PR02, 115,BDES,,QDBM2L -18.612 -18.612 -18.130

12. SLAC PEPII Accelerator Physics J. Turner 1/26/06 Power supply list LGPS,PR02, 114,BDES,,QDBM3L -16.944 -16.944 -15.652 LGPS,PR02, 113,BDES,,QDBM4L -20.551 -20.551 -26.746 LGPS,PR02, 112,BDES,,QFBM5L 33.192 33.192 34.171 LGPS,PR02, 108,BDES,,QF2R 43.287 43.287 44.488 LGPS,PR02, 107,BDES,,QF2L 46.948 46.948 46.405 LGPS,PR02, 106,BDES,,QDB1R03 -26.996 -26.996 -26.492 LGPS,PR02, 105,BDES,,QFB1R03 19.714 19.714 19.498 LGPS,PR02, 104,BDES,,QFB1R01 19.714 19.714 19.498 LGPS,PR02, 103,BDES,,QDB1R01 -26.996 -26.996 -26.492 LGPS,PR04, 314,BDES,,SCX4R03 307.78 307.78 259.94 LGPS,PR04, 214,BDES,,SKG4 0.0 0.0.97513 LGPS,PR04, 213,BDES,,SKG3 0.0 0.0 1.3700 LGPS,PR03, 179,BDES,,QFP3R04 22.349 22.349 21.175 LGPS,PR03, 177,BDES,,QFP5R04 21.403 21.403 21.109 LGPS,PR03, 176,BDES,,QDP6R04 -16.882 -16.882 -18.323 LGPS,PR03, 175,BDES,,QFP7R04 19.326 19.326 24.644 LGPS,PR03, 174,BDES,,QDP8R04 -16.710 -16.710 -20.297 LGPS,PR03, 173,BDES,,QFP9R04 24.127 24.127 25.794 LGPS,PR04, 172,BDES,,QFPR04 27.360 27.360 26.519 LGPS,PR04, 171,BDES,,QDPR04 -27.360 -27.360 -27.970

13. SLAC PEPII Accelerator Physics J. Turner 1/26/06 Power supply list LGPS,PR06, 199,BDES,,QFW1 28.552 28.552 29.095 LGPS,PR06, 198,BDES,,QDW2 -46.820 -46.820 -46.344 LGPS,PR06, 197,BDES,,QFW3 23.670 23.670 23.373 LGPS,PR06, 196,BDES,,QFW4 24.994 24.994 24.829 LGPS,PR06, 194,BDES,,QFW6 32.946 32.946 32.621 LGPS,PR06, 193,BDES,,QFW7 14.326 14.326 14.469 LGPS,PR06, 192,BDES,,QDW8 -17.149 -17.149 -17.260 LGPS,PR08, 304,BDES,,SF2 345.02 345.02 384.56 LGPS,PR08, 303,BDES,,SF1 C 172.51 172.51 192.34 LGPS,PR08, 302,BDES,,SD2 C -746.66 -746.66 -847.41 LGPS,PR08, 301,BDES,,SD1 C -373.33 -373.33 -426.79 LGPS,PR08, 184,BDES,,QDI -3.0085 -3.0085 -3.0474 LGPS,PR08, 183,BDES,,QFI 6.7051 6.7051 6.6704 LGPS,PR08, 182,BDES,,QDOI -10.462 -10.462 -10.731 LGPS,PR08, 181,BDES,,QFOI 16.822 16.822 16.993 LGPS,PR12, 313,BDES,,SCX4R01 307.78 307.78 259.94 LGPS,PR12, 212,BDES,,SKG2 0.0 0.0 -1.2562 LGPS,PR12, 211,BDES,,SKG1 0.0 0.0.46485 LGPS,PR12, 179,BDES,,QFP3R12 22.349 22.349 20.985 LGPS,PR12, 178,BDES,,QDP4R12 -18.925 -18.925 -19.177

14. SLAC PEPII Accelerator Physics J. Turner 1/26/06 Power supply list LGPS,PR12, 177,BDES,,QFP5R12 21.403 21.403 20.737 LGPS,PR12, 176,BDES,,QDP6R12 -16.882 -16.882 -18.100 LGPS,PR12, 175,BDES,,QFP7R12 19.326 19.326 24.686 LGPS,PR12, 174,BDES,,QDP8R12 -16.710 -16.710 -19.970 LGPS,PR12, 173,BDES,,QFP9R12 24.127 24.127 25.005 LGPS,PR12, 172,BDES,,QFPR12 27.360 27.360 26.078 LGPS,PR12, 171,BDES,,QDPR12 -27.360 -27.360 -28.237

15. SLAC PEPII Accelerator Physics J. Turner 1/26/06 Conclusions Hysterisis too great for knobbing full optics (any MD in this direction need standardize) Steering solutions can be had with nearly flat orbit to be “in the green” at low currents. (here again, keeping specific as currents are raised is very difficult requiring successive shifts of expert tuning...MD)