• Read few papers and books for corrections in chapter # 1• Corrections in chapter # 1• Benchmark calculations for kicks using Bane & Gluckstern

paper• Some reading on CLIC for writing chapter # 2• Booked my (2nd ) visa appointment with Swiss embassy and

is on 25th Sept.• Need an invitation letter from CERN.• Had lots of domestic issues!!!

What I have done in last 2 weeksWhat I have done in last 2 weeks

Vasim Khan MEW group meeting slide 1/5 Thu: 10/10/09

Kick factor calculation HFSS v 11

Cell a b fsyn ksyn fsyn ksyn ksyn

Label (mm) (mm) (GHz) (V/pC/mm/m) (GHz) (V/pC/mm/m) (V/pC/mm/m)

C 5.25 11.12 14.80 31.0 14.76 31.0 24

D 4.625 10.83 15.34 41.6 15.31 41.9 36.28

E 4.0 10.58 15.97 54.4 15.95 54.9 51.75

Bane & Gluckstern HFSS v 11 Neg. sign Pos. sign

C D E

C D E

dze EVL

0

ωt izz

Vasim Khan MEW group meeting slide 2/5 Thu: 10/10/09

MonopoleNeg. sign Pos. sign

C

D

E

C

D

E

Vasim Khan MEW group meeting slide 3/5 Thu: 10/10/09

Conclusion ??• It seems neg. sign is correct.....but still some

doubts!• For CLIC_DDS1 structure neg. sign works well

except for cell # 1 (a=4.0mm) kick.

Vasim Khan MEW group meeting slide 4/5 Thu: 10/10/09

• Some simulations on DDS1 structure to validate the prediction of the fits.

• What is our goal for the CLIC workshop ?• Begin writing chapter # 2 : CLIC an overview.• CLIC crab cavity?

Next ?

Chapters planned• 1. Introduction• 2. CLIC an overview• 3. RF parameters• 4. Wakefield• a. Theory • b. Methods of wakefield suppression• i. Waveguide damping• ii. Choke-mode damping• iii. Detuning and moderate damping

• 5. Circuit model• a. Single band• b. Double band• c. Double band with manifold*• d. Spectral function*

• 6. Designing a structure• a. Optimisation procedure• i. Beam dynamics constraints• ii. RF breakdown constraints

• b. Prescribing a Gaussian distribution • c. Interleaving structures• d. Efficiency calculations

• 7. Results• a. 3.3 GHz structure • b. 1.0 GHz structure• c. 2.3 GHz structure

• 8. Conclusion

Vasim Khan MEW group meeting slide 5/5 Thu: 10/10/09

* I need some understanding.