BWS Requirements

• Acquisition:
  • 4 channels from multi-PMT
  • 12-14 bits > 480MSps
  • Analogue bandwidth > 500MHz
  • 80MHz LP after PMT
  • DC coupling
• Control
  • 2 channels for optical sensors
  • 400kHz sinusoid
  • 10-12 bits with 40MSps OK
  • May be able to use data from ADC already included in intelligent drive unit

Acquisition currently based on FMC-1000

• 2 channel - 650MSps - 14 bit
• Needs 2 VFCs per scanner

Comments

• Manfred
  • Should look at Bandpass Gaussian like filter
  • Can reduce issues with low frequency components
• Enrico
  • 2 regimes
    • PSB & PS low frequency
    • SPS up to 40MHz bunch by bunch
    • Need to look at both as they have significantly different signal responses

LEIR Injection BPMs

Acquisition:

• 101.3MHz sinusoidal signal
• Sampling options
  • at > 250MSps for 1st Nyquist band
  • at > 100MSps for direct undersampling
  • Analogue BW greater than 200MHz for both
• Ideally > 14 bit ADC

Other Systems that could profit

• LEIR/AD Schottky
• PSB injection diamond BLMs
• Transfer line FBCTs

Possibilities

ADC options

• TI ADS54J60
  • 16-bit 1 GSps
  • 11.3ENOB (70dBFS SNR)
  • 2 channels with 2/4 lanes per channel
  • Possible for 4 channels at 650MS/s

Commercial options

• All 4 channels
  • Vadatech FMC231
    • $5578 / 14 weeks
    • Transformer coupled
  • Hitech HTG-ADC16
    • Transformer coupled
  • Abaco FMC120
    • DC coupled?
    • To be checked

Could likely find variant without DAC

ACTIONS:

• JIRI - coordinate purchase of Abaco FMC120 (or similar) with Tom
• JIRI - implement ADC readout on VFC once card delivered
  • Aim for demonstration early 2019
• FEDERICO - launch market survey for LIU BWS ADC purchase
  • Get specification input from existing cards on the market - e.g. FMC120
• JOSE - investigate the possibility to use a bandpass filtered signal for the SPS & possibly PS