ELOG DESPEC

AIDA GELINA BRIKEN nToF CRIB ISOLDE CIRCE nTOFCapture DESPEC DTAS EDI_PSA 179Ta CARME StellarModelling DCF K40

DESPEC

Fields marked with * are required

Entry time:

Tue Aug 13 13:55:45 2019

Author*:

Subject*:

AIDA Finally working again so can test VP&#39;s added WAVE histogramming mode.

Fig 1. Waveforms for FEE12 ASIC 1. Sample rate = 10, Threshold = 10500 
n.b. lots of &quot;blank&quot; wave channels for unknown reason, all low-energy channels show pulser so it&#39;s not a DSSD signal problem?

Fig 2. Pulser spectrum for FEE12 ASIC 1. (10 peaks 0.1 -&gt; 1 V)

Fig 3. Waveforms for FEE10 ASIC 3.

n.b. WAVE channels frequently stopped updating, needed start/stop DAQ or restart WAVE readout option. Unsure if it&#39;s related to high rate/odd signals. 
Might be related to issue in FEE12 too. WAVE good events statistics lower than empty FEEs. 
All rates quite high, looks quite noisy at the moment.

Fig 4. Pulser of FEE10 ASIC 3.

Note that FEE10.3 has poor peaks, in WAVE we see: 
Some normal looking pulses which are merely noiser than other channels. 
Some pulses which look very odd (baseline really low, etc).

Will recheck ground for noise issues, but the huge peaks are confusing to me. (3.5.W, etc)

<table align="center" border="1" cellspacing="1" style="width:98%">
	<tbody>
		<tr>
			<td style="background-color:#486090">Quote:</td>
		</tr>
		<tr>
			<td style="background-color:#ffffb0">
			New merger has been worked on by VP which fixes the timewarp issues and MBS integration.

Currently no WAVE capture is supported, VP will re-add WAVE histogramming for startup testing.

10.05.2019 - Pulser walkthrough 
			-&gt; Pulser rate 50 Hz 
			-&gt; 1 minute per 0.1 V (0.1 to 1 V) 
			-&gt; extra time on 1 V

With this 95% of channels calibrate easily (good statistics) 
			Issue: ~16 channels (most of ASIC3) in FEE10 are horrificly noisy. Not calibrated

Fig 1. Pulser of FEE1 (no DSSD) 
			Fig 2. Pulser of FEE9 (DSSD) 
			Fig 3&amp;4. Pulser of FEE10 noisy channels

Future TODO: Will investigate WAVE data and look if issue can be found.

20.05.2019 - Alpha walkthrough 
			-&gt; Pulser off 
			-&gt; FEE10ASIC3 has readout off &amp; discriminator masked 
			-&gt; Slow threshold 0x64 
			-&gt; Fast threshold 0xff 
			-&gt; HEC threshold 0x2

File is nyx/gamma/nhubbard/AIDA/alpha_bg_200519_

Rate is approx. 1MB/s still of WR timestamp data.

(NB, MIDAS Alpha walkthrough before beamtime I see no alpha events in!)

Fig 5: Temps 
			Fig 6: Stats 
			Fig 7: Merger Stats 
			Fig 8: MBS Stats
			</td>
		</tr>
	</tbody>
</table>

&nbsp;

Encoding: HTML ELCode plain
Suppress Email notification Resubmit as new entry

Attachment 1: