synopsis
DESCRIPTION
synopsis. The current PAD incarnation with 119 MHz acquisition fails to resolve pulse shape to required resolution. This resolution is required not only for DUT RF signals but also for SLED tuning and pulse shaping. PAD resolution is about 40 ns . NLCTA structure tests use GS scopes (Faya) - PowerPoint PPT PresentationTRANSCRIPT
synopsis
• The current PAD incarnation with 119 MHz acquisition fails to resolve pulse shape to required resolution. This resolution is required not only for DUT RF signals but also for SLED tuning and pulse shaping. PAD resolution is about 40 ns.
• NLCTA structure tests use GS scopes (Faya)• Our effective resolution is 6 bits in our current setup. Recommendation is
to go to 12 bit/5ns -> 60dB dynamic range• PAC/PAD triggering system in development at TS11• Off the shelf ZTEC EPICS recommendations:
– ZT4611 E LXI 2 ch 8 bit $10,810.– ZT4612 E LXI 4 ch 8 bit $17,505– ZT4422 E LXI 2/4 ch =1/.5 GS 12 bit $13,385.00
• ZTEC4612 available for testing• G Haller uses EPICS with Acqiris (our current DAQ system)
High power RF capabilities
From Two 50 MW Klystrons
Variable irisVariable Delay line length through variable mode converter
Gate Valves
Two experimental stations inside the enclosure, one with compressed pulse and the other without the benefit of the pulse compressor.
With two 50MW XL4 klystrons ASTA can produce: 100MW @ 1.5 μs --> 550MW @ 63 ns at X-band and feed twoexperimental outputs in the enclosure.
Courtesy of Valery Dolgashev
SRS60 Hz
AFG
AFGTWT K
TWT K
llrf configuration
I&QMIXER
I&QMIXER
SRSDG645
4 port combiner
no SLED
SLED
Power meters Dark current signals
DUT FE/REKlystron RE
Vacuum
SRS60-120
Hz
TWT K
TWT K
rf configuration
trigger
4 port combiner
no SLED
SLED4
3
6
5
9 1110
2
1
DUT
DUT
FC
FC
FC
FC
14
15
I/Q
I/Q
1,2,3,4,7,8,9 Amplitude monitoring 100 MHz, power meters, GPIB to EPICs@ .1 Hz
5,6 KLY RE Machine protection, monitoring
100 MHz, power meters @ 120 Hz
10 I/Q pulse shaping High resolution/ .1 Hz
11,12,13 I/Q DAQ High resolution/ 120 Hz
14,15,16 FC DAQ amplitude High resolution/ 120 Hz
7
812
13
FCs
16
Requirements
Purpose1,2,3,4,7,8,9
Amplitude monitoring
100 MHz, power meters @ .1 -1 Hz GPIB to EPICs
5,6 KLY RE Machine protection, monitoring
100 MHz, power meters @ 120 Hz GPIB to EPICs, diode/discriminator
10 I/Q pulse shaping GS/ .1 Hz, downmixed Online I/Q feedback
11,12,13
I/Q DAQ GS/120 Hz 8-12 bit, downmixed 2 previous pulses, triggered data dump, offline I/Q, power meter correlation
14,15,16
FC DAQ amplitude GS/120 Hz 8-12 bit 2 previous pulses, triggered data dump