430 transmitter

04aug10
Links:

18jan18: usrp: downstairs blanking turns on late.
01oct15: tx pulse 440 and 1000 usecs rf pulses.
04apr12: can we replace the 430tx with a ring of amiser panels?
27mar12: modAnode not staying all the way off after beam off.
16jan12: waveguide measurements
19oct10: scope trace of protect turnoff
07oct10: 430 transmit pulse sequence timing
07aug10: 1 Mhz chirp transmitter pulse output
03aug10: measure klystron output of 1 Mhz chirped signal using scope
Hagens 430tx operations and maintenance manual

apr12: Ionizing  radiation measured in 430 transmitter room  (.pdf)

mar17: directory holding 430tx power meter files


18jan18:Usrp, downstairs blanking turns on late.

    Experiment T3150 ran a clp experiment with a 6ms ipp and a 346 usec rf pulse. The downstairs thumb wheel blanking was set to 160 usecs.

    Data was taken with the gregorian dome into the usrp sampling system (no ch ).

    The usrp sampled a combination of the rf signal  (coming from the 430 receiver upstairs.. about 3.5 usecs transit time) and the tx samples (coming from the waveguide probes in the tx room .. negligible delay).

blanking:

     The receiver signal is blanked (upstairs in the dome ) and down stairs in the receiver room.

Problems with the data.

    The usrp data for t3150 was analyzed for
Looking at the 17,18th data, the blanking region at the start of the txIpp was about 10usecs shorter than normal.

The plots show a single tx pulse for 17 and 18 jan18 (.ps) (.pdf):

What is happening:

On 22jan18 we checked the test blanking output signal that went to dana's blanker.


processing: x101/180119/430txblnk.pro


01oct15: 440 and 1000 usec rf pulse:

    Data taken on 01oct15 was used to examine two different rf pulses:
Both of these pulses were modulated by the coded long pulse random pn code.
The plots show the different rf pulses (.ps) (.pdf)

Summary:


processing: x101/151001/chktxdroop.pro


27mar12 Mod anode not staying completely off after beam off.

    The mod anode was not staying completely off after the rf pulse turrned off. The mod anode output of the transmitter console is plotted below for various HV settings. These measurements were taken with a single klystron (klyA) installed.'

19oct10: scope trace of protect turnoff. (top)

    On 19oct10 we did a test to look at how quickly the 430 ch  receiver could be turned on after the rf pulse of the transmitter goes off. The setup was:

Sumary:


ACK at hagens box, IF SIGNAL, RF pulse at hagens box, protectCmd leaving hagens box
protect turn off


07oct10: 430 transmit pulse sequence timing (top)

The picture below shows the 430 transmiter transmit sequence. a (.pdf version) is also available)

tx transmit
          sequence


07aug10: 1 Mhz chirp transmitter pulse output. (top)

    T2568 was a meteor experiment that used a 1 Mhz chirped transmiter pulse. The setup was:
The plots show the sampled data (.ps) (.pdf):

Summary.
processing: 101001/atmri.pro

03aug10: measure klystron output of 1 Mhz chirped signal using scope (top)



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