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  • Design and Detailed Plan for In Vacuum Diamond Sensor for PHIL and ATF2 S. Liu, P. Bambade, F. Bogard, P. Cornebise, I. Khvastnov, H. Monard, C. Sylvia
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Design and Detailed Plan for In Vacuum Diamond Sensor for PHIL and ATF2 S. Liu, P. Bambade, F. Bogard, P. Cornebise, I. Khvastnov, H. Monard, C. Sylvia FJPPL-FKPPL Workshop on ATF2 Accelerator R&D, Annecy, 17-19 Mar., 2014

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Page 1: Design and Detailed Plan for In Vacuum Diamond Sensor for PHIL and ATF2 S. Liu, P. Bambade, F. Bogard, P. Cornebise, I. Khvastnov, H. Monard, C. Sylvia

Design and Detailed Plan for In Vacuum Diamond Sensor for PHIL and ATF2

S. Liu, P. Bambade, F. Bogard, P. Cornebise, I. Khvastnov, H. Monard, C. Sylvia

FJPPL-FKPPL Workshop on ATF2 Accelerator R&D, Annecy, 17-19 Mar., 2014

Page 2: Design and Detailed Plan for In Vacuum Diamond Sensor for PHIL and ATF2 S. Liu, P. Bambade, F. Bogard, P. Cornebise, I. Khvastnov, H. Monard, C. Sylvia

Contents

• Planned location of diamond detector at PHIL and ATF2

• Expected signal range @ATF2

• Design for electronics

• Design for mechanics

• Status of preparation for mechanics

• Summary and Future Plan

2

Page 3: Design and Detailed Plan for In Vacuum Diamond Sensor for PHIL and ATF2 S. Liu, P. Bambade, F. Bogard, P. Cornebise, I. Khvastnov, H. Monard, C. Sylvia

PHIL

Same "plug compatible" design for PHIL and ATF2: fabrication will be completed in April 2014 before testing in May-June at PHIL.

Diamond Detector

ATF2

Page 4: Design and Detailed Plan for In Vacuum Diamond Sensor for PHIL and ATF2 S. Liu, P. Bambade, F. Bogard, P. Cornebise, I. Khvastnov, H. Monard, C. Sylvia

Expected Signal Range @ ATF2

4

Total # Min. ～ Max. #/mm2 @ Sensor

Charge collected/mm2

Beam 1010 6.16*107 1.6887μCHalo

(δp/p0=0.01)107 1.14 *104 31.236pC

Halo (δp/p0=0.0008)

107 2.24*104 61.376pC

Compton 28340 3*10～ 5.2*102 82.2fC～ 1.4284pC

Tested signal ranged @ PHIL with 4.5X4.5mm2 diamond pad-> 11fC (with 40dB amplifier) to 1μC (with 12dB attenuator)

New design with 4 strips for diamond detector in vacuum

Page 5: Design and Detailed Plan for In Vacuum Diamond Sensor for PHIL and ATF2 S. Liu, P. Bambade, F. Bogard, P. Cornebise, I. Khvastnov, H. Monard, C. Sylvia

Top and Bottom View of PCB

PCB

Diamond

Top side of diamond Bottom side of diamond

Bottom side of PCBTop side of PCB

CH2 with R3=0.51Ω

Page 6: Design and Detailed Plan for In Vacuum Diamond Sensor for PHIL and ATF2 S. Liu, P. Bambade, F. Bogard, P. Cornebise, I. Khvastnov, H. Monard, C. Sylvia

6

Special channel for big signal

(beam core)

Design for Electronics

Filter for HV -> final choice of parameters being checked

k1k3

k2k4

k0

Bottom side of PCB

Cutoff frequency for HV: ω =1/ τ =1/ R1C1

Charging time constant: τ = R1 Ctotal

Ctotal=(C2 + C3 + C4+C5 +C6) ≈1uf

R1 =1kΩω = 1MHzτ = 1ms

SMA-MMCX

Page 7: Design and Detailed Plan for In Vacuum Diamond Sensor for PHIL and ATF2 S. Liu, P. Bambade, F. Bogard, P. Cornebise, I. Khvastnov, H. Monard, C. Sylvia
Page 8: Design and Detailed Plan for In Vacuum Diamond Sensor for PHIL and ATF2 S. Liu, P. Bambade, F. Bogard, P. Cornebise, I. Khvastnov, H. Monard, C. Sylvia
Page 9: Design and Detailed Plan for In Vacuum Diamond Sensor for PHIL and ATF2 S. Liu, P. Bambade, F. Bogard, P. Cornebise, I. Khvastnov, H. Monard, C. Sylvia
Page 10: Design and Detailed Plan for In Vacuum Diamond Sensor for PHIL and ATF2 S. Liu, P. Bambade, F. Bogard, P. Cornebise, I. Khvastnov, H. Monard, C. Sylvia

Prepared Mechanics

756mm

265mm

Laptop for control

Transformer and ethernet module

Moveable stageMin. step: 0.01mmMax. distance: 115mmVelocity can be adjusted

610mm cables for vacuum with SMA/MMCX connectors

Page 11: Design and Detailed Plan for In Vacuum Diamond Sensor for PHIL and ATF2 S. Liu, P. Bambade, F. Bogard, P. Cornebise, I. Khvastnov, H. Monard, C. Sylvia

11

Summary and Future Plan

• The design for diamond detector for vacuum is done and the order for 2 first units was sent in Feb. 2014, and two more units will be delivered in 2015;

• One set of mechanics for diamond detector in vacuum is ready and has been tested at LAL, it will be installed at PHIL for diamond tests in April;

• The components for the second set are delivered, except for the central vacuum chamber, which will be built by KEK;

• Holder for diamond detector will be ordered and fabricated soon;

• Fabrication of diamond detector for vacuum will be completed in April 2014 before testing in May-June at PHIL and installation at ATF2 in autumn.


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