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Observations at Fermilab. Genfa Wu for Fermilab team. Fermilab/ANL facility and diagnostic capability Cavity processing/testing summary Cavity performance and material observation Summary and work in progress . Fermilab/ANL facility and diagnostic capability. Cavity sequence

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Observations at fermilab
Observations at Fermilab

Genfa Wu for Fermilab team

Fermilab/ANL facility and diagnostic capability

Cavity processing/testing summary

Cavity performance and material observation

Summary and work in progress


Fermilab anl facility and diagnostic capability
Fermilab/ANL facility and diagnostic capability

Cavity sequence

Camera inspection

Ultrasonic degrease with soap

EP

Ultrasonic degrease with soap

HPR

Baking 120 C

RF cold test

Follow up Camera inspection

Camera inspection system by Kyoto University


Fermilab anl facility and diagnostic capability1
Fermilab/ANL facility and diagnostic capability

Cavity sequence

Camera inspection

Ultrasonic degrease with soap

EP

Ultrasonic degrease with soap

HPR

Baking 120 C

RF cold test

Follow up Camera inspection

Fermilab Argonne joint facility


Fermilab anl facility and diagnostic capability2
Fermilab/ANL facility and diagnostic capability

A typical EP process with constant average current

Fermilab Argonne joint facility


Fermilab anl facility and diagnostic capability3
Fermilab/ANL facility and diagnostic capability

Cavity sequence

Camera inspection

Ultrasonic degrease with soap

EP

Ultrasonic degrease with soap

HPR

Baking 120 C

RF cold test

Fermilab Argonne joint facility


Fermilab anl facility and diagnostic capability4
Fermilab/ANL facility and diagnostic capability

Cavity sequence

Camera inspection

Ultrasonic degrease

EP

Ultrasonic degrease with soap

HPR

Baking 120 C

RF cold test

Fermilab A0 baking stand


Fermilab anl facility and diagnostic capability5
Fermilab/ANL facility and diagnostic capability

Cavity sequence

Camera inspection

Ultrasonic degrease

EP

Ultrasonic degrease with soap

HPR

Baking 120 C

RF cold test

Fermilab IB1 Vertical Test System


Cavity inside inspection
Cavity inside inspection

Brand new TB9ACC010 iris between cell 8 and 9, by D. Sergatskov


Cavity inside inspection1
Cavity inside inspection

~ 5 mm

TE1ACC001 Equator 0 before and after EP 100 µm, by M. Ge


Cavity inside inspection2
Cavity inside inspection

http://tdserver1.fnal.gov/project/TD_SCRF/CavityImaging/

All the single cell images (equator and iris) are public



T map
T-map

Fast thermometry system adapted By D. Sergatskov, FNAL


T map1
T-map

By A. Mukherjee, FNAL

By G. Ciovati, JLAB Pioneered at Cornell

Dramatically reduced cable form factor and 30 min installation time


T map preliminary result on te1aes004
T-map preliminary result on TE1AES004,

Cavity history:

BCP 107 µm, EP 65 µm, In-situ baking 120C

By A. Mukherjee


T map preliminary result on te1aes0041
T-map preliminary result on TE1AES004,

Cavity history:

BCP 107 µm, EP 65 µm, In-situ baking 120C

By A. Mukherjee


T map preliminary result on te1aes0042
T-map preliminary result on TE1AES004,

Cavity history:

BCP 107 µm, EP 65 µm, In-situ baking 120C

By A. Mukherjee


All show no x-ray, except NR-1

NR-1, Slight FE, Quench

TE1AES004 quench

TE1AES005

NR-4 is BCP only, listed for reference

NR-4

TE1ACC002

By J. Ozelis

EP single cell at Fermi Argonne facility

EP completed

EP completed

EP in progress



NR-1

Cavity history:

BCP 150 µm, EP 100 µm, No In-situ baking

After EP, Photo By M. Ge

By M. Ge

Equator weld rugged, despite of 100 µm EP

By J. Ozelis

Currently at Cornell for quench identification and cavity inspection

By Z. Conway

26 MV/m, quench, slight FE


Te1aes004
TE1AES004,

Final test

By M. Ge

By J. Ozelis

TE1AES004 equator other side 540 position

Cavity history:

BCP 107 µm, EP 65 µm, In-situ baking 120C

39.2 MV/m, No X-ray, limited by quench

Pit 0.9 mm diameter, depth still being investigated


H field enhancement of pit
H field enhancement of Pit

H. Padamsee, summary talk, LCWS08

These two edges with higher H-field

Replica will help resolve the geometry

- Berry, Antoine, Desmons, EPAC2004


Te1aes005
TE1AES005,

By A. Crawford

By J. Ozelis

TE1AES005 equator before EP

Cavity history:

BCP 104 µm at Cornell, EP 100 µm at ANL

31.5 MV/m, No X-ray, limited by Q-slope


Te1acc002
TE1ACC002,

By M. Ge

By J. Ozelis

TE1ACC002 equator 24 pos. before bulk EP

Cavity history:

EP 112 µm at ANL

33 MV/m, limited by Q-slope


Nr 4 to be ep at able
NR-4, to be EP at ABLE

By M. Ge

NR-4 equator other side 1072 position

By Z. Conway and J. Ozelis

Cavity history:

BCP 254 µm

28.7 MV/m, No X-ray, limited by Q-slope


Cavities for eddy current scanning
Cavities for Eddy Current Scanning

Side 2

RF side

Using thermometry to track evolution of defects

Studies for Eddy Current Scanning


Next rf tests
Next RF tests

  • Two RF tests for post-baking EP cavities

  • 9-cell RF test (JLAB result verification)

  • 9-cell HPR/RF test (A6)

  • Two more newly EP cavities

  • ABLE EP cavity

  • Laser treated cavity


Fermi argonne cavity experience
Fermi Argonne cavity experience

3 Recent consecutive RF tests show No x-ray and 4/5 cavity cycles show no-xray at Fermi/Argonne joint facility

9-cell processing will start on 3/13/2009


Public access of cavity data
Public access of cavity data

All single cells inner surface (iris and equator ) are inspected http://tdserver1.fnal.gov/project/TD_SCRF/CavityImaging

http://tdserver1.fnal.gov/genfa/single/Single%20cell%20summary.htm

Fermi Argonne Cavity Activity is real time scheduled

http://tdserver1.fnal.gov/genfa/single/calendar.htm


Summary work in progress
Summary (work in progress)

  • Features don’t cause quench up to ~29 MV/m in BCP cavities

  • One EP cavity with equator pit quenches above 39 MV/m, which suggests right EP condition may still reduce the Pit magnetic field enhancement.

  • BCP + EP may have more potential than we thought.


Team effort
Team effort

  • EP/Processing team: M. Kelly, S. Gerbick, M. Ketzy, D Bice, D. Olis, G. Wu, A. Rowe, B. Smith, T. Arkan, …

  • RF/cryo team: J. Ozelis, G. Wu, M. Carter, D. Massengil, …

  • A0 Vacuum team: A. Rowe, W. Murayi, B. Tennis, R. Montiel, M. Rauchmiller, …

  • Hardware: C. Ginsburg, P. Pfund, N. Dhanaraj, M. Steinke, B. Smith, …

  • Inspection: M. Ge, D. Sergatskov, G. Wu, R. Schuessler

  • Cornell: Z. Conway, H. Padamsee

Let me know if I missed anyone.


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