Thomson scattering is an important technique for plasma diagnostics in nuclear fusion facilities such as tokamaks and stellarators. It is used to measure both the electron temperature and density at many locations inside the plasma.
The measurement is conducted using a pulsed laser, typically a Ruby laser or Nd:YAG, that generate repeated pulses that are shone into the plasma. Some of the laser light (photons) is scattered of free electrons in the plasma resulting in spectral expansion due to the Doppler effect.
Avalanche photo diodes (APDs) detect the scattered photons and high-performance digitizers capture the resulting waveforms. The spectral expansion helps assess the plasma temperature whereas the number of scattered photons determine the plasma density.
Commonly used products and features
Our Thomson scattering customers typically use ADQ14DC-4C in MTCA or PXIe form factor. It is a quad-channel, 14-bit, 1 GS/s digitizer with 700 MHz analog input bandwidth that provide an excellent match with commonly used detectors. It offers highly accurate backplane trigger and synchronization capabilities in order to support massive multi-channel data capture while keeping external cabling to a minimum.
Furthermore, it hosts 2 Gbyte on-board data memory capable of storing very long pulses and supports a native data transfer rate of 3.2 Gbyte/s which can be extended even more through optional firmware upgrades. The customer can also gain access to the on-board Xilinx Kintex 7 K325T FPGA if custom real-time processing is required. The optional firmware and development kits can be purchased separately at any time and upgrades can be done in place without any need for system disassembly or significant downtime.
In high-speed, multi-digitizer systems, distributing trigger signals with precision is critical to maintaining synchronization and data integrity. Traditional methods of splitting trigger signals often introduce timing mismatches and jitter, especially at gigahertz sampling rates.
To overcome these limitations, our systems implement a Daisy Chain Trigger Mechanism. In this configuration, a single primary digitizer receives the external trigger and then propagates it digitally to subsequent digitizers in a chain. This approach eliminates the fan-out problem and ensures consistent timing across all devices, achieving trigger timing precision better than 50 picoseconds even in large-scale systems.
By combining this mechanism with a shared 10 MHz reference clock distributed to all boards, we maintain a unified time base and enable synchronized data acquisition across hundreds of channels. This is essential for applications requiring ultra-precise timing, such as radar, fusion diagnostics, and high-energy physics experiments.
For a deeper dive into our synchronization and triggering technologies, visit our Multi-Channel Data Acquisition page.
"The combination of 14 bits dynamic range and 1 GS/s sampling rate is taking the performance of digitizers for TS system to an unprecedented performance level compared to the normally used 10 or 12 bit ADC."
READ MORE ABOUT ADQ14 IN "THE THOMSON SCATTERING SYSTEM AT WENDELSTEIN 7-X", PAGE 4, "DATA ACQUISITION".
25-3162 ADQ35 triggering for averaging with FWATD
배송안내
배송 지역 | 대한민국 전지역
배송비 | 2,500원 (50,000원 이상 결제시 무료배송)
배송기간 | 주말 공휴일 제외 2~5일
- 모든 배송은 택배사 사정으로 지연될 수 있습니다.
교환 및 반품 안내
- 고객 변심으로 인한 교환/반품은 상품 수령 후 14일 이내 가능합니다.
- 고객 귀책 사유로 인한 반품의 경우 왕복 택배비는 고객 부담입니다.
- 반품접수 기한이 지난 경우, 제품 및 패키지 훼손, 사용 흔적이 있는 제품은 교환/반품이 불가합니다.
Thomson scattering is an important technique for plasma diagnostics in nuclear fusion facilities such as tokamaks and stellarators. It is used to measure both the electron temperature and density at many locations inside the plasma.
The measurement is conducted using a pulsed laser, typically a Ruby laser or Nd:YAG, that generate repeated pulses that are shone into the plasma. Some of the laser light (photons) is scattered of free electrons in the plasma resulting in spectral expansion due to the Doppler effect.
Avalanche photo diodes (APDs) detect the scattered photons and high-performance digitizers capture the resulting waveforms. The spectral expansion helps assess the plasma temperature whereas the number of scattered photons determine the plasma density.
Commonly used products and features
Our Thomson scattering customers typically use ADQ14DC-4C in MTCA or PXIe form factor. It is a quad-channel, 14-bit, 1 GS/s digitizer with 700 MHz analog input bandwidth that provide an excellent match with commonly used detectors. It offers highly accurate backplane trigger and synchronization capabilities in order to support massive multi-channel data capture while keeping external cabling to a minimum.
Furthermore, it hosts 2 Gbyte on-board data memory capable of storing very long pulses and supports a native data transfer rate of 3.2 Gbyte/s which can be extended even more through optional firmware upgrades. The customer can also gain access to the on-board Xilinx Kintex 7 K325T FPGA if custom real-time processing is required. The optional firmware and development kits can be purchased separately at any time and upgrades can be done in place without any need for system disassembly or significant downtime.
In high-speed, multi-digitizer systems, distributing trigger signals with precision is critical to maintaining synchronization and data integrity. Traditional methods of splitting trigger signals often introduce timing mismatches and jitter, especially at gigahertz sampling rates.
To overcome these limitations, our systems implement a Daisy Chain Trigger Mechanism. In this configuration, a single primary digitizer receives the external trigger and then propagates it digitally to subsequent digitizers in a chain. This approach eliminates the fan-out problem and ensures consistent timing across all devices, achieving trigger timing precision better than 50 picoseconds even in large-scale systems.
By combining this mechanism with a shared 10 MHz reference clock distributed to all boards, we maintain a unified time base and enable synchronized data acquisition across hundreds of channels. This is essential for applications requiring ultra-precise timing, such as radar, fusion diagnostics, and high-energy physics experiments.
For a deeper dive into our synchronization and triggering technologies, visit our Multi-Channel Data Acquisition page.
"The combination of 14 bits dynamic range and 1 GS/s sampling rate is taking the performance of digitizers for TS system to an unprecedented performance level compared to the normally used 10 or 12 bit ADC."
READ MORE ABOUT ADQ14 IN "THE THOMSON SCATTERING SYSTEM AT WENDELSTEIN 7-X", PAGE 4, "DATA ACQUISITION".
25-3162 ADQ35 triggering for averaging with FWATD
배송안내
배송 지역 | 대한민국 전지역
배송비 | 2,500원 (50,000원 이상 결제시 무료배송)
배송기간 | 주말 공휴일 제외 2~5일
- 모든 배송은 택배사 사정으로 지연될 수 있습니다.
교환 및 반품 안내
- 고객 변심으로 인한 교환/반품은 상품 수령 후 14일 이내 가능합니다.
- 고객 귀책 사유로 인한 반품의 경우 왕복 택배비는 고객 부담입니다.
- 반품접수 기한이 지난 경우, 제품 및 패키지 훼손, 사용 흔적이 있는 제품은 교환/반품이 불가합니다.
