19:00

Arrived at GSI.

We have 6Li1+ beam in the ring at 2 MeV/u. Injection is about 2.5e7 pps and lifetime with no target is about 40 seconds. We have injection every 25 seconds.

DSSD bias situation remains unchanged from previous elogs. See attachment 1.

AIDA started - all looks OK. All FEE temps OK - coolant pipe must still be fine.

Set aida03 and aida04 to MEC (0x1) and slow comparator thresholds for all FEEs to 0x32 (500 keV).

Attachment 2 shows ADC data items rate for 1 MeV threshold. Attachment 3 shows the same but at 500 keV threshold with aida03 and aida04 set to MEC.

DAQ go rates look OK.

Setting up tape server and merger. I notice a strange occurance. NetVar options is set to 3 on loading. I set this equal to 1 so we can write to disk.... but this turns off the enable output to data storage off on the merger. By enabling output to data storage again the neVar options variable returns to 3 and we cannot write data to disk. I have tried reloading the servers for the merger/tape server and rebooting the FEEs -> still have this issue. It is pretty late so have turned FEEs off but left DSSDs biased at 100V.

Note the proxy is back up

09:45

Started up AIDA DAQ.

Started merger and tape server as yesterday. Today I have had no issues (same procedure was used last night?!). We are currently writing data to disk G22-205/R1

All FEEs set to 0x32 thresholds, with aida03 and aida04 set to MEC.

All sytem checks OK - no faults.

Temps OK

Merger running between 100k and 400k. Tape server writing ~300 kb/sec to disk.

Beam is ON. 6Li1+ at 2 MeV/u. Gleb is currently running machine tests.

Motors are not homed yet, waiting until beam is off and access to the cave to double check pins are out, Potentiometers read left=21.45mm and right=19.8mm

Attachment 4 - ADC data rates

Attachment 5 - Merger

Attachment 6 - Tape server

11:00

Safety meeting , beam off and access to the cave

Pins removed from motors and compressed air on. Motors homed.

Started background run (no beam) R3

13:30

We are now waiing for the target before we can begin tests today.

ASIC settings checked. We are using APR2025 settings. Only chnages made are aida03 and aida04 to MEC and slow comparator threshold lowered to 500 keV (0x32)

Fast comparator threshold is 0xff

14:00

Motors movement tested with signals from CRYRING. Dummy test signals sent through number 16 on the control room to CRYRING touch panel. This sent an injection signal followed by a dump signal 5 seconds later. Motors moved according to this pattern.

Command used on CARME motors code for future reference

l t in

l p in

l t out

l p out

l r 20