Midas Consoles Server SR35 User Manual

MIDAS experiment „alc“  
USER MANUAL  
SR35, 05.07.2006  
Data acquisition is running on psw407 (DELL Power Edge 2600).  
AFS users can logon to pc5145, the local user account is l_musr_alc.  
Data files are stored locally on psw407 in /home/l_musr_alc/exp/alcand  
automatically copied to /afs/psi.ch/project/bulkmusr/data/alc/ti  
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Start a run  
for autorun sequence: set autorun_active = 1 (if 0: only single run)  
there are no ‘scans’ anymore!  
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Stop a run  
Do not interfere the stopping procedure – wait until the pages refreshes and shows status  
‘stopped’.  
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Set Magnet  
change Demand value  
read Hall probe  
read NMR probe  
- field >= 0.0  
* - probe is locked  
* - readout unit is Tesla  
* - sum of returned errors (returned value < 0.0)  
*
*
*
*
*
*
*
*
status unit  
-1.0 BUS DRIVER I/O TIMEOUT I  
-2.0 BUS DRIVER ERROR  
-4.0 not in state LOCKED  
-8.0 state NOT LOCKED  
-16.0 state WRONG  
-32.0 state NMR signal  
-64.0 unit not Tesla  
B
!L  
N
W
S
!T  
* -128.0 invalid channel number C  
*
* status = I|B|L|N|W|S|C|E  
* unit = T|F|U  
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Set Temperature  
LTC21: Input: read values  
Output: set value LTC21_Analog_Set_Point (K)  
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Set Flow  
Demand = 3000 for T = 0 – 100 °C,  
set Demand = 10000 for cooling down,  
base temp. ???  
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History  
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ODB: DO NOT TOUCH! – discuss with Instrument Scientist first  
Start frontends from terminal by running the command  
alc_start_midas  
Shutdown all frontends:  
alc_mcleanup  
[l_musr_alc@pc4244 alc]$ alc_mcleanup  
Midas cleanup procedure for experiment ALC...  
Stopping MIDAS clients...  
09:48:00 [ODBEdit] Program ODBEdit on host pc4244 stopped  
09:48:00 [IPS120 SC] Program IPS120 SC on host pc4244 stopped  
09:48:00 [alc_fe] Program alc_fe on host pc4244 stopped  
09:48:00 [HALL_SCfe] Program HALL_SCfe on host pc4244 stopped  
09:48:00 [ODBEdit1] Cannot shutdown client "NMR_SCfe", please kill manually and do an ODB cleanup  
09:48:00 [SampleT_scfe] Program SampleT_scfe on host pc4244 stopped  
09:48:00 [LTC21 SC] Program LTC21 SC on host pc4244 stopped  
09:48:00 [BeamLine SC] Program BeamLine SC on host pc4244 stopped  
09:48:00 [Logger] Program Logger on host pc4244 stopped  
09:48:00 [mhttpd] Program mhttpd on host pc4244 stopped  
09:48:00 [RVC200 Frontend] Program RVC200 Frontend on host pc4244 stopped  
09:48:00 [Analyzer] Program Analyzer on host pc4244 stopped  
odbedit exit status 0  
Now I do an ODB cleanup...  
Killing processes in case that odbedit failed to stop them ...  
Process with pid \003256\\ (mhttpd) ...killednecho -n Process with pid \003278\\ (nmr_scfe) ...  
killedn  
killproc exit status 0  
killing mozilla...  
mozilla-bin: no process killed  
killing opera...  
opera: no process killed  
Cleaning up shared memory segments for user l_musr_alc ...  
Shared memory segment id 65537 ...  
resource(s) deleted  
Shared memory segment id 98306 ...  
resource(s) deleted  
Shared memory segment id 131075 ...  
resource(s) deleted  
Cleaning up semaphores for user l_musr_alc ...  
------ Shared Memory Segments --------  
key  
shmid  
owner  
root  
perms  
777  
bytes  
49152  
nattch  
status  
0x00000000 0  
1
------ Semaphore Arrays --------  
key semid owner  
perms  
nsems  
0x4d05c027 0  
l_musr_al 666  
l_musr_al 666  
l_musr_al 666  
l_musr_al 666  
l_musr_al 666  
1
1
1
1
1
0x4d05c028 32769  
0x4d05c029 65538  
0x4d05c080 98307  
0x4d05c1c0 131076  
------ Message Queues --------  
key msqid owner  
perms  
used-bytes  
messages  
[l_musr_alc@pc4244 alc]$  
(eventually run twice or more… until no midas daemons left)  
then it looks like:  
[l_musr_alc@pc4244 alc]$ alc_mcleanup  
Midas cleanup procedure for experiment ALC...  
Stopping MIDAS clients...  
No clients found  
odbedit exit status 0  
Now I do an ODB cleanup...  
Killing processes in case that odbedit failed to stop them ...  
killproc exit status 0  
killing mozilla...  
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mozilla-bin: no process killed  
killing opera...  
opera: no process killed  
Cleaning up shared memory segments for user l_musr_alc ...  
Cleaning up semaphores for user l_musr_alc ...  
------ Shared Memory Segments --------  
key  
shmid  
owner  
root  
perms  
777  
bytes  
49152  
nattch  
status  
0x00000000 0  
1
------ Semaphore Arrays --------  
key semid owner  
0x4d05c027 0 l_musr_al 666  
perms  
nsems  
1
------ Message Queues --------  
key msqid owner  
perms  
used-bytes  
messages  
[l_musr_alc@pc4244 alc]$  
alternatively: start midas daemons one by one without X-server:  
[l_musr_alc@pc4244]$ mhttpd -p 8080 -D  
[l_musr_alc@pc4244]$ alc_fe -D  
[l_musr_alc@pc4244]$ ips120_scfe -D  
[l_musr_alc@pc4244]$ ltc21_scfe -D  
[l_musr_alc@pc4244]$ samplet_scfe -D  
[l_musr_alc@pc4244]$ hall_scfe -D  
[l_musr_alc@pc4244]$ nmr_scfe -D  
[l_musr_alc@pc4244]$ rvc200_scfe -D  
[l_musr_alc@pc4244]$ bl_scfe -D  
[l_musr_alc@pc4244]$ analyzer -D  
[l_musr_alc@pc4244]$ mlogger -D  
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Separator: vncviewer sepii:0, pw: exhalle  
if only black screen appears use rdesktop sepii, user: halle, pw: exhalle  
-
under winXP: Remote Desktop Connection (All Programs – Accessories –  
Communications)  
for  
HV = 150 kV: SEP = 746  
The beamline setting is named ALC2005_1st_period.set.  
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Data written as  
ASCII file: alc_05_NNNN.dat  
(run number NNNN)  
format:  
19 header lines followed by data, lines containing 48 coloumns each  
!File: /home/l_musr_alc/exp/alc/alc_05_0270.dat  
!Run : 270  
!Start/Stop time: 01:25:32 (30-04-2005) / 06:55:08 (30-04-2005)  
!Comment: cell 107, 15% DHTAC / 50 mole% ortho-chlorobenzoate, 35C  
!Field [T]: prescan = 1.5000; from = 1.5500; to = 2.3000; step = 0.0005  
!Temperature (cold finger) : T1 = 346.503 K; dT1 =  
!Temperature (sample plate): T2 = 350.154 K; dT2 =  
!Preset Count: 1500000  
0.029 K  
0.063 K  
!Group of preset  
detectors: 0x00000004  
!Group of forward detectors: 0x007f0000  
!Group of backward detectors: 0x000007f0  
!
!
!
!
!
!-------------------------------------------------------------------------------  
B_IPS asym a_err I_IPS B_NMR B_Hall T1 T2 reserve[0..7] scaler[0..31]  
!-------------------------------------------------------------------------------  
!
1.5500  
0.11370  
0.00031 22.79400  
0
1.5481  
1.5480  
346.629  
1601696  
350.034  
0
0
0
0
0
0
0
0
9042  
0
915025  
829539  
925851  
756272  
512164  
0
827958  
508840  
883336  
602534  
764988  
716321  
0
0
0
0
0
0
0
0
0
0
862837  
751539  
743396  
0
0
0
1.5505  
0.11459  
0.00030 22.80140  
0
1.5485  
1.5480  
346.660  
1620915  
350.027  
0
0
0
0
0
0
0
0
9149  
0
927877  
842968  
938642  
767071  
518703  
0
839195  
514314  
895571  
612899  
777035  
725841  
0
0
0
0
0
0
0
0
0
0
872329 758847  
754103  
0
0
0
scaler[28] – [31] contains the sums of all detector counts in fw and bw generated by an  
FC103 ‘OR’ unit. This avoids counting of double hits.  
sb_pos = scaler[28];  
sb_neg = scaler[29];  
sf_pos = scaler[30];  
sf_neg = scaler[31];  
The resulting asymmetry and error are written in reserve[0] – [3]for pos. and neg.  
electric field applied (asy_pos, errasy_pos, asy_neg, errasy_neg). (Only negative  
polarity if no electric field clock signal present!).  
AFS data path:  
/afs/psi.ch/project/bulkmusr/data/alc/ti/  
defined as DATAPATH on pc5145: cd $DATAPATH  
visualize, e.g., gnuplot: plot “alc_05_0123.dat” u 1:2:3 w e  
use Root on pc5145:  
cd /home/l_musr_alc/ALC  
root -l DoALC.C  
[] load();  
[] plot();  
[] combine();  
[] save();  
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Appendix: Some ODB entries  
Ip_min is the minimum required beam currenton Target E in mA. Measurement is  
paused when the current is lower.  
rate_min is the minimum required positron rate in the sum of the backward counters  
(this makes sure that the run is automatically paused when the beamblocker is closed).  
TestRun = ‘n’ writes datafile ‘alc_05_NNNN.dat’  
TestRun= ‘y’ writes ‘test_alc_05_NNNN.dat’  
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Ip_channel is the channel number (starting at 0, in the above example this is the third  
channel) of the proton beam current signal, 100 kHz correspond to 1 mA.  
preset channels is the bitmask for the scaler channels used for the preset counting  
register in hex form. In the above example this is the proton current (equivalent to  
counting for a certain number of incoming muons). 3rd channel has bitmask 0100,  
represented by 0x4 in hex code.  
preset_value is the number of counts per field points in the preset_channel. 1’500’000  
counts in the proton beam channel correspond to 10 seconds measurement time at an  
average beam of 1.5 mA. Keep in mind that the scaler is read only every 3 seconds…  
Forward_Detectors, Backward_Detectors is the bitmask for the detectors in hex code.  
FW: 0x7F0000 ==  
0111 1111 0000 0000 0000 0000 == channels 17 – 23 out of 32,  
BW: 0x7F0 == 0000 0000 0000 0111 1111 0000 == channels 5 – 11 out of 32.  
Channel_norm_time scaler[n](#n) is number of the channel used for the clock signal  
(starting at channel 0, here in the second channel (scaler[1]))  
and Rate_norm_time is the clock frequency (1 kHz).  
Contacts:  
phone: 3465  
phone: 3200  
πE3 mobile phone: 5883  
ALC counting room: 3025  
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