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Cavity Preparation for S1-Global. Eiji Kako (KEK, Japan). 1. KEK Cavities for S1-G 2. DESY Cavities for S1-G FNAL Cavities for S1-G Present Status of Preparation Schedule of Cavity Assembly. Outline. Five Cavities at KEK for S-1 Global. STF-BL #7 Cavity (MHI-07)

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slide1

Cavity Preparation

for S1-Global

Eiji Kako

(KEK, Japan)

ILC meeting @ KEK Global Design Effort

outline

1.KEK Cavities for S1-G

  • 2. DESY Cavities for S1-G
  • FNAL Cavities for S1-G
  • Present Status of Preparation
  • Schedule of Cavity Assembly

Outline

ILC meeting @ KEK Global Design Effort

slide3

Five Cavities at KEK for S-1 Global

STF-BL #7 Cavity (MHI-07)

STF-BL #8 Cavity (MHI-08)

STF-BL #9 Cavity (MHI-09)

STF-BL #5 Cavity (MHI-05)

STF-BL #6 Cavity (MHI-06)

Delivery in 2008’ March

Delivery in 2009’ March

ILC meeting @ KEK Global Design Effort

slide4

Surface Preparation at STF

EP

Hot bath Rinse

C2H5OH, Degrease

Flange-CP

Assembly

(Class 10)

HPR

Infrastructure in the STF Hall

System check with AES#1 cavity was

carried out in Oct., 2008.

Vertical Test

Inspection of

Inner Surface

Pre-tuning

fo adjustment

Hanging

Stand

Baking

(Class 1000)

ILC meeting @ KEK Global Design Effort

slide5

Summary of VT at STF (MHI-05 ~ 09)

Oct, 2009

Cavities for S1-G

5 Cavities

15 Vert.Tests

for 1 year

(Dec. 2008’

~ Nov. 2009’)

Oct.

29

Nov.

12

Nov.

26

ILC meeting @ KEK Global Design Effort

slide6

Four KEK Cavities for S1-Global

Oct, 2009

STF Phase-1

MHI-01,02,03,04

20, 30, 20, 20 MV/m

ave. Eacc,max = 22.7 MV/m

ave.

+ 5.7 MV/m

S1-Global

MHI-05,06,07,09

27, 28, 34, 25 MV/m

ave. Eacc,max = 28.4 MV/m

ILC meeting @ KEK Global Design Effort

slide7

Eacc,max (cell) by Passbands modes Meas.

Quench by

Field emission

MHI-05

3rd

MHI-06

6th

Quench

p mode; Eacc,max = 27.7 MV/m

> 30.

MV/m

p mode; Eacc,max = 27.1 MV/m

> 35.

MV/m

Quench

Quench by

Field emission

MHI-09

1st

MHI-07

2nd

> 35.

MV/m

p mode; Eacc,max = 33.6 MV/m

~ 40.

MV/m

p mode; Eacc,max = 25.0 MV/m

Oct, 2009

ILC meeting @ KEK Global Design Effort

slide8

Two DESY Cavities for S1-Global

(NOT official information !! )

25 June 2009

03 Aug. 2009

. Vertical test with He Jacket

. No bead measurement after VT to avoid contamination

. Installation of a cold coupler

. Installation of two HOM probes, and adjust HOM filter

. Transportation to KEK in the mid. of November

ILC meeting @ KEK Global Design Effort

slide9

Two FNAL Cavities for S1-Global

(NOT official information !! )

AES002 Cavity (?)

ACCEL-8 Cavity (?)

(No Qo – Eacc data ??)

(No Qo – Eacc data ??)

. 32.8 MV/m tested at JLab

. Reserved at FNAL

. To be 3rd dressed cavity

. 30.6 MV/m tested at JLab

. Reserved at JLab

. To be sent to FNAL

. To be 6th dressed cavity

. When ?? He Jacket Welding

. When ?? Installation of a cold coupler

. Installation of two HOM probes, and adjust HOM filter ??

. Transportation to KEK in the mid. of December

ILC meeting @ KEK Global Design Effort

slide10

Eight Cavities for S1-Global

1. MHI-05 (27.1 MV/m) ; Slide-Jack tuner (center)

2. MHI-06 (27.7 MV/m) ; Slide-Jack tuner (center)

3. MHI-07 (33.6 MV/m) ; Slide-Jack tuner (end)

4. MHI-09 (25.0 MV/m) ; Slide-Jack tuner (end)

5. Zanon-108 (31.3 MV/m) ; Saclay tuner (end)

6. Zanon-109 (30.7 MV/m) ; Saclay tuner (end)

7. AES-002 ? (32.8 MV/m) ; Blade tuner (center)

8. ACCEL-8 ? (30.6 MV/m) ; Blade tuner (center)

MHI (Japan), Zanon (Italy), AES (USA), ACCEL/RI (Germany)

Qualified Vendor !!

ILC meeting @ KEK Global Design Effort

slide11

Cavity Transportation for S1-Global

This week !!

Transportation Route ;

FNAL  DESY ( Oct.)

KEK  DESY (mid. Nov.)

KEK  FNAL (end. Nov.)

KEK  FNAL (mid. Dec.)

Four cavities from DESY/FNAL

will be ready at KEK in the end

of December.

ILC meeting @ KEK Global Design Effort

slide12

Cavity Assembly for S1-Global

KEK

String

Assembly

Tuner

Installation

KEK Warm Coupler

Installation

DESY

& FNAL

String

Assembly

Tuner &

Mag. Shield

Installation

DESY Warm Coupler

Installation

ILC meeting @ KEK Global Design Effort

slide13

Cryomodule Tests for S1-Global

  • High RF Power Measurements
  • RF meas. (QL, Qt, QHOM)
  • Cavity conditioning with 1.5 ms
  • Cavity conditioning with 0.6 ms
  • Mechanical vibration modes (5Hz)
  • RF feedback on/off by LLRF
  • Observation of Lorentz Detuning
  • Compensation of Lorentz Detuning
  • Dynamic RF loss measurement
  • 4 Cavity operation with vector-sum
  • 8 Cavity operation with vector-sum
  • Long time operation at 31.5 MV/m
  • etc.
  • Low RF Power Measurements
  • Slide-Jack Tuner stroke
  • Piezo tuner stroke
  • RF meas. (QL, Qt, QHOM)
  • HOM Qext
  • Frequency stability
  • Mechanical vibration modes
  • Pulse response by Piezo drive
  • etc.

Coupler conditioning

at room temp.

ILC meeting @ KEK Global Design Effort

slide14

Meeting for S1-G preparation

  • KEK visit of Jim Kerby (FNAL), 10th -12th, Nov.
  • Video/Webex meeting for S1-G preparation
  • pm.10:00~12:00 in 11th, Nov. at KEK,
  • in participation of DESY and FNAL colleagues
  • Main topics on discussion;
  • (Share of collaboration works for S1-G)
  • . Cavity string assembly
  • . Tuner & mag. shield assembly
  • . Tuner testing
  • . Input coupler assembly (warm parts)
  • . Conditioning of input coupler at room temp.
  • . etc.

ILC meeting @ KEK Global Design Effort

slide15

Thank you

for your attention.....

ILC meeting @ KEK Global Design Effort