Initialization of the VME electronics for (n,n'g) experiments
The initialization of the VME modules is controlled via the files "setup_vme_0.ini" and "setup_vme_1.ini" for the Plastic Scintillator Setup and the BaF2-Array, respectively. Each line of these files has to have the following structure: "variable = value". Everything behind an double slash "//" is interpreted as a comment. Values can be set decimal or hexadecimal (0x...). Tabs, multiple spaces and empty lines are ignored. A line containing "endnow = 1" will cause MBS to stop reading the setup file, i.e. everything below this line will be ignored.
The following variables are accepted:
|
Variable |
Meaning |
Value Range |
Recom- |
| General | |||
| comment | defines which comments should be printed out to the mbsprint_vme_0.l log-file | 0: no comments 1: all comments 2: scaler values, errors, initialization |
2 |
| testrun | defines if the current setup_vme_0.ini will be copied for logging into the directory "mbsrun/nng/log/" | 0: setup will be saved 1: setup will not be saved |
0 |
| scalerrestart | defines if a check should be enabled at each scaler readout (trigger type 2) if the electronics setup is paralyzed, i.e. if the QDC buffers are full although TDC almost full level not reached | 0: disabled 1: enabled |
1 |
| sleeptime | defines time (in micro sec) how long the plastic branch should wait after initialization before starting measurement to be synchronized with the BaF2 branch | 0 | |
| setped | defines if the SetPed routine is started to set the TAPS QDC pedestal values automatically to 100 | 0: disabled 1: enabled |
0 |
| fastanalysis | defines if a fast analysis of the plastics time-of-flight spectra is written to "mbs_ratios.l" | 0: disabled 1: enabled |
1 |
| printveto | defines if veto length values are printed out | 0: disabled 1: enabled |
0 |
| Scaler | |||
| sis3820_LNEtime | time between each scaler readout in seconds | 1...420 | 15 |
| ADC | |||
| v556_thrl | threshold | 0x1 | |
| v556_cntr | control register (see manual, bit 0..7: enable input channels) | 0x1 | |
| FPGA | |||
| v1495_reload | defines if the V1495 user FPGA firmware is reloaded before initialization | 0: disabled 1: enabled |
0 |
| v1495_maj | BaF2 majority level | 1...63 | 1 |
| v1495_pl_logic | defines the logic function to be applied to both inputs of one plastic detector | 0: AND 1: OR |
0 |
| v1495_baf_logic | defines the logic function to be applied to both inputs of one BaF2 detector | 0: AND 1: OR |
0 |
| v1495_trig_wdth | trigger width in ns (should be multiples of 10 ns) | 10...655350 | 3000 |
| v1495_trig_scal | downscale factor for readout Trigger | 1...65535 | 31 |
| v1495_a_mask_l | Port A masking, low bits A[0] ... A[15]: Plastic trigger input | all plastics: 0x0fff no plastics: 0x0000 |
0x0fff |
| v1495_a_mask_h | Port A masking, high bits A[16] ... A[31]: Plastic trigger input | FC: 0x4000 no FC: 0x0000 |
0x4000 |
| v1495_b_mask_l | Port B masking, low bits B[0] ... B[15]: Busy signals | only plastics: 0x7700 only BaF2: 0x70ff only FC: 0x7800 |
0x7fff |
| v1495_b_mask_h | Port B masking, high bits B[16] ... B[31]: not used | 0x0000 | 0x0000 |
| v1495_d_mask_l | Port D masking, low bits D[0] ... D[15]: BaF2 trigger input | no BaF2: 0x0000 only BaF2: 0xffff |
0x0000 |
| v1495_d_mask_h | Port D masking, high bits D[16] ... D[31]: BaF2 trigger input | no BaF2: 0x0000 only BaF2: 0xffff |
0x0000 |
| v1495_e_mask_l | Port E masking, low bits E[0] ... E[15]: Scaler outputs | 0xffff | |
| v1495_e_mask_h | Port E masking, high bits E[16] ... E[31]: Scaler outputs | 0xffff | |
| v1495_f_mask_l | Port F masking, low bits F[0] ... F[15]: trigger output | only plastic: 0xec33 only BaF2: 0xecc5 only FC: 0xec39 |
0xecff |
| v1495_f_mask_h | Port F masking, high bits F[16] ... F[31]: monitor pins, bit 0..5: plastic coincidence | 0xffff | |
| v1495_scal_pl_## | downscale factor for plastic detectors; ## = {00...07} | 0...255 0 = off |
1 |
| v1495_scal_baf_## | downscale factor for BaF2 detectors; ## = {00...15} | 0...255 0 = off |
1 |
| v1495_baf_or_scal | downscale factor for BaF2 OR/Majority | 1...255 | 1 |
| v1495_pl_or_scal | downscale factor for plastic OR | 1...255 | 1 |
| v1495_coin_win | length of the coincidence window for majority determination in ns (should be multiples of 25 ns) | 25...1638375 | 3000 |
| v1495_pl_or_win | length of the coincidence window for OR determination in ns (should be multiples of 25 ns) | 25...1638375 | 3000 |
| v1495_glob_or_win | length of the coincidence window for global OR determination in ns (should be multiples of 25 ns) | 25...1638375 | 3000 |
| v1495_delay_# | gate output delay; # = {1...3} (should be multiples of 10 ns) | 10...655350 | 1 (Pl Taps): 350 2 (BaF Taps): 170 3 (ADC): 250 |
| v1495_gate_# | gate output width; # = {1...3} (should be multiples of 10 ns) | 10...655350 | 1 (Pl Taps): 100 2 (BaF Taps): 100 3 (ADC): 5500 |
| TDC | |||
| v1190a_out_prog | POUT output | 0: Data Ready, 1: Full 2: Almost Full, 3: Error |
0 |
| v1190a_alm_full | Almost Full level | 1... 32735 | 1500 |
| v1190a_acqmode | acquisition mode | 0x0000: trigger matching 0x0100: continuous storage |
0x0000 |
| v1190a_winwidth | match window width in ns | 25...102375 | 6000 |
| v1190a_winoff | match window offset before trigger in ns | -1000...51200 | 5000 |
| v1190a_extrasearch | extra search margin | 8 | |
| v1190a_reject | reject margin | 1 | |
| v1190a_edgedet | edge detection mode | 0: pair 1: trailing 2: leading 3: leading + trailing |
2 |
| v1190a_leadres | resolution for leading edge in ps | 100 | |
| v1190a_widthres | resolution for width in ps | 100 | |
| v1190a_ctrl | control register | cf. manual p. 71 | 0x228 |
| v1190a_headtrail | define if TDC header and trailer are enabled | 0x3000: enabled 0x3100 disabled |
0x3100 |
| Fast analysis | |||
| backmin | ToF cuts: plastic background lower limit | see PLSUMTDCS histogram | |
| backmax | ToF cuts: plastic background upper limit | see PLSUMTDCS histogram | |
| gamma1min | ToF cuts: plastic gamma pre peak lower limit | see PLSUMTDCS histogram | |
| gamma1max | ToF cuts: plastic gamma pre preak upper limit | see PLSUMTDCS histogram | |
| gamma2min | ToF cuts: plastic gamma main peak lower limit | see PLSUMTDCS histogram | |
| gamma2max | ToF cuts: plastic gamma main peak upper limit | see PLSUMTDCS histogram | |
| neutronmin | ToF cuts: plastic neutrons lower limit | see PLSUMTDCS histogram | |
| neutronmax | ToF cuts: plastic neutrons upper limit | see PLSUMTDCS histogram | |
| fcadcthr | ADC cuts: FC pulse height threshold | see ADC histogram | |
| fctdcmin | ToF cuts: FC neutrons lower limit | see TDCFCDIFF histogram | |
| fctdcmax | ToF cuts: FC neutrons upper limit | see TDCFCDIFF histogram | |
| all TAPS | |||
| v874b_mindead | defines if the modules are set offline during readout | 0: readout offline 1: readout online |
1 |
| v874b_emptyprog | defines if empty events are enabled | 0: disabled 1: enabled |
1 |
| v874b_bitpat | defines if the bit patterns are measured | 0: disabled 1: enabled |
0 |
| v874b_TACon | defines if the TAC values are measured | 0: disabled 1: enabled |
0 |
| v874b_LGon | defines if the LG and LGS values are measured | 0: disabled 1: enabled |
0 |
| v874b_SGon | defines if the SG and SGS values are measured | 0: disabled 1: enabled |
1 |
| v874b_lowthr | underflow and over range suppression | 0: disabled 1: enabled |
1 |
| v874b_bafthr | underflow threshold in ch | 0...255 | 3 |
| v874b_bafsendthr | defines an additional software threshold; all TAPS ADC Data words with measured values below v874b_bafsendthr will not be written to stream | 0 | |
| v874b_Vset | Vset: defines time resolution / range | 0: 178 ps/ch (727 ns range) 43: 103 ps/ch (400 ns range) 140: 54 ps/ch (200 ns range) |
140 |
| v874b_Voff | Voff: defines time offset | 240: 300 ns 165: 400 ns 131: 500 ns |
165 |
| v874b_thrLED | threshold of the leading edge discriminators | 7819: 50 mV 7446: 100 mV 6701: 200 mV |
8110 |
| single TAPS | |||
| v874b_#_pedXY | TAPS-Module no. # pedestal value for XY; # = {1...3}, X ={SLG, SGS, LG, SG}, Y= {1, 2, 3, 4} | 5376 | |
| v874b_#_thrCFDY | TAPS-Module no. # threshold value of CFDY; # = {1...3}, Y= {1, 2, 3, 4} | 0...8117 | see cabeling scheme |
|
Variable |
Meaning |
Value Range |
Recom- |
| General | |||
| comment | defines which comments should be printed out to the mbsprint_vme_1.l log-file | 0: no comments 1: all comments 2: scaler values, errors, initialization |
2 |
| testrun | defines if the actual setup_vme_1.ini will be copied for logging into the directory "mbsrun/nng/log/" | 0: setup will be saved 1: setup will not be saved |
0 |
| scalerrestart | defines if a check should be enabled at each scaler readout (trigger type 2) if the electronics setup is paralyzed, i.e. if the QDC buffers are full although TDC almost full level not reached | 0: disabled 1: enabled |
1 |
| sleeptime | defines time (in micro sec) how long the BaF2 branch should wait after initialization before starting measurement to be synchronized with the plastic branch | 13000000 | |
| opcreadout | defines if MBS should readout the OPC data from the shared memory; if this value is set to 1, opc2shm should run on rio6 | 0: disabled 1: enabled |
0 |
| setped | defines if the SetPed routine is started to set the QDC pedestal values automatically to 100 | 0: disabled 1: enabled |
0 |
| Target | |||
| movetarget | defines if the target is moved by software | 0: target wil not be changed 1: software will change target |
1 |
| changetargetauto | defines if scattering target is changed automatically to next position at "start acquisition" | 0: disabled 1: enabled |
1 |
| settarget | defines target position to be set if "changetargetauto" is set to 0 | 1...4 | 1 |
| Scaler | |||
| sis3820_LNEtime | time between each scaler readout in seconds | 1...420 | 15 |
| all TAPS | |||
| v874b_mindead | defines if the modules are set offline while readout | 0: readout offline 1: readout online |
1 |
| v874b_emptyprog | defines if empty events are enabled | 0: disabled 1: enabled |
1 |
| v874b_bitpat | defines if the bit patterns are measured | 0: disabled 1: enabled |
0 |
| v874b_TACon | defines if the TAC values are measured | 0: disabled 1: enabled |
0 |
| v874b_LGon | defines if the LG and LGS values are measured | 0: disabled 1: enabled |
1 |
| v874b_SGon | defines if the SG and SGS values are measured | 0: disabled 1: enabled |
1 |
| v874b_lowthr | underflow and over range suppression | 0: disabled 1: enabled |
1 |
| v874b_bafthr | underflow threshold | 0...255 | 3 |
| v874b_bafsendthr | defines an additional software threshold; all TAPS ADC Data words with measured values below v874b_bafsendthr will not be written to stream | 0 | |
| v874b_Vset | Vset: defines time resolution / range | 0: 178 ps/ch (727 ns range) 43: 103 ps/ch (400 ns range) 140: 54 ps/ch (200 ns range) |
140 |
| v874b_Voff | Voff: defines time offset | 240: 300 ns 165: 400 ns 131: 500 ns |
165 |
| v874b_thrLED | threshold of the leading edge discriminators | 7819: 50 mV 7446: 100 mV 6701: 200 mV |
8110 |
| single TAPS | |||
| v874b_#_pedXY | TAPS-Module no. # pedestal value for XY; # = {1...11}, X ={SLG, SGS, LG, SG}, Y= {1, 2, 3, 4} | 5376 | |
| v874b_#_thrCFDY | TAPS-Module no. # threshold value of CFDY; # = {1...11}, Y= {1, 2, 3, 4} | 0...8117 | see cabeling scheme |
