Structure Nick-Names and Documentation

Germana creates/created a structure traveler describing the handling

(Features: each step, with date and description, signed by the person who did it)

Type No of cells vg (start) special feature

HDS 11 8.3 thick

Constant Imp 30 2.4 thin

Tapered 5 3.6 quad

TDamped clean

30 GHz program in CTF3

30 GHz:

- pi/2 structure (test of short phase advance, fabrication tech.) DONE!

- HDS 11 copper/molybdenum (for better statistics)

- HDS 11 very small (r=1.2) (clear P/C experiment without other changes)

- Round 3.5 mm made out of quadrants (clear experiment for fab. Tech.)

- HDS4_thick_r=1.75 (iris thickness, phase advance, P/C) Installed !

- HDS4_thick_clean (compares cleaning with previous)

- NDS4_thick_r=1.75 (Effect of slots and quadrants)

- NDS4_thin (iris thickness in comparison with NDS4_150deg_thick)

-C30_vg2.6

-C30_vg8.2

-C30_vg8.2_sb

-C30_vg2_TM02

List of planned experiments with new structures

30 GHz break down R&D program in CTF3

- HDS4_vg2.6_thick (iris thickness, phase advance, P/C) Installed !

- NDS4_vg2.5_thick (Effect of slots and quadrants)

- C30_vg4.7_quad (clear experiment for fab. Tech.)

Decision point, see flow chart !

- HDS11_vg2 (clear P/C experiment without other changes)

- HDS4_vg2.6_thick_clean (compares cleaning with previous)

- NDS4_vg3.6_thin (iris thickness in comparison with NDS4_thick)

- C30_vg2.6 (P/C)

- C30_vg8.2 (P/C)

- C30_vg4.7_sb (speed bump)

- C30_vg2_TM02 (vg)

- HDS 11 copper/molybdenum (for better statistics)

New list of planned experiments ordered by priority and reality

30 GHz flow chart

C30_vg2_TM02

HDS4_vg2.6_thick

HDS11_vg2

HDS4_vg2.6_thick_clean

NDS4_vg2.5_thick

NDS4_vg3.6_thin

Quads or slot are a problem

Quads or slot are not a problem

P/C ok

C30_vg2.6

C30_vg8.2

C30_vg4.7_sb

New ideas if needed

2008

2007

Input for x-bandC30_vg4.7_quad

11 GHz program in NLCTA and XTF

- CLIC vg3/1 quadrants damped (CERN, Japanese industry) (test of P/C, damping, quadrant technology)

- T26vg3MC (done by SLAC) (conservative approach to better efficiency)

- CLIC vg3/1 disks undamped (done by KEK) (test of P/C in conservative technology, technology comparison)

- CLIC vg3/1 quadrants undamped (CERN) (test of P/C, quadrant technology)

- T26vg3MC quadrants (CERN) (technology comparison)

- CLIC vg3/1 disks damped (CERN) (mainly test of damping)

- T26vg3MC disks damped (CERN) (back up test of damping if others are not successful)

Old list of planned experiments

11 GHz CLIC structure program

11.4 GHz:

- TD18_vg2.4_quad (CERN, VDL, Japanese industry) [2x] (test of P/C, damping, quadrant technology)

- T28_vg2.9 (done by SLAC) (conservative approach)

- T18_vg2.4_disk (SLAC,KEK) [2x] (test of P/C in conservative technology, technology comparison)

Decision point, see flow chart

- T18_vg2.4_quad (CERN) (test of P/C, quadrant technology)

- TD18_vg2.4_disk (CERN) [2x] (mainly test of damping)

- TD28_vg2.9 (CERN) (back up test of damping if others are not successful)

New list of planned experiments

11 GHz flow chart

CLICvg1 geometry OK2008

2007

CLICvg1 geometry not OK

Disks OKQuads OK+Damp

2009

CLIC prototype disks dampedCLIC prototype TD28 like

CLIC prototype quads damped

Go towards more extreme structures

2010

Input from break down R&D

TD18_vg2.4_quadT28_vg2.9T18_vg2.4_disk

TD28_vg2.9(T18_vg2.4_quad)

TD18_vg2.4_disk

?

DampingNot OK

New 11 GHz breakdown R&D program

- C10_vg1.5 (close to old CLIC vg1.1) [3x] 2007/2008

- C10_vg2.9 (T53 input cell) [2x] 2008

- C10_vg0.6 [2x] 2008

- C10_vg2.4_thick [2x] 2008

General remarks:

All structures in copper, once best geometry is found one could test it in a different material

Really try to make decisions at the decision points to focus more the effort

What about 12 GHz ?

One structure needed end 2008:

Chose March 08 at latest: T18_vg2.4

d [mm]a [mm]

2.66 2.13 2.00 1.66 1.37 1.25

2.53 Or smaller?

CLIC _vg1output 1.0%

2.85 T53 output1.0%

3.0 CERN-X1.1%

Vg1.5?

3.873.89*

CLIC _vg1Input 2.4%

30 GHz 2π/3 ≈2.6%

T53 input*2.86%

4.38 30 GHz 2π/3 4.7%

5.00 30 GHz π/2 7.4%

30 GHz2π/3 8.2%

Iris diameter and thickness scaling

test geometrical variation of gradient

Aug

Oct Nov Dec

CTF3 30 GHz

NLCTA

Station 1 11.4 GHz

Pi/2 HDS4_vg2.6_thickheat treated

XTF 11.4 GHz

Sept

Jul

Current structure testing program

TD18_vg2.4_quad

T28_vg2.9

C10_vg1.5

HDX11 Cularge grains

C30_vg4.7_quad

NLCTA

Station 2 11.4 GHz

2007

NDS4_vg2.6_thick

T53vg3MC

H60vg3S18

Old Clic vg1.1

Apr-Jun Jul-Sep Oct-Dec

CTF3 30 GHz

NLCTA

Station 1 11.4 GHz

C30_vg2.6

XTF 11.4 GHz

Jan-Mar

Current structure testing program

C30_vg8.2

C30_vg2_TM02

NLCTA

Station 2 11.4 GHz

2008

C10vg2.9 [2x]

C10vg0.6 [2x]

C10vg2.4_thick [2x]

T18_vg2.4_disk

TD18_vg2.4

T18_vg2.4_disk [2]

TD18_vg2.4_quad [2]

PETS 11.4 GHz

HDS11_vg2

TD18_vg2.4_quad

T28_vg2.9

C10_vg1.5

TD18_vg2.4 [2]

C10vg1.5 [2x]

CLEX 12GHz

T18_vg2.4_disk

PETS 12 GHz