Aug 07, 2009 ------------ Left HRS NIM-ECL to Scaler and NIM-ECL to TDC mapping: NIM-ECL1 ->Scaler1d, Scaler3d and TDC1 NIM-ECL2 ->Scaler1u, Scaler3u and TDC2 NIM-ECL3 ->Scaler2d, Scaler4d and TDC3 NIM-ECL4 ->Scaler2u and TDC4 NIM-ECL5 ->Scaler4u and TDC5 July15, 2009 ------------ Right HRS NIM-ECL to Scaler and NIM-ECL to TDC mapping: NIM-ECL1 ->Scaler1d, Scaler4d and TDC1 NIM-ECL2 ->Scaler1u, Scaler3d and TDC2 NIM-ECL3 ->Scaler2d, Scaler3u and TDC3 NIM-ECL4 ->Scaler2u and TDC4 NIM-ECL5 ->Scaler4u and TDC5 July 6, 2009 ------------- Xiaochao noticed that (in the last of week of June) the cable for trigger T4 was connected to PS740 input instead of the PS740 output. That means we may not have (use) T4 type of events from the test run. Only T5 may be effective from the PVDIS since T6 is a 100 Hz pulser and there is no signal from T3. Also, Xiaochao noticed that for the tagger part of the circuit, the following should be the mapping: Expected Real --------- ------ gr 5 narrow same gr 5 wide same gr 6 narrow same gr 6 wide gr7 narrow gr 7 narrow gr 7 wide gr 7 wide gr 8 narrow gr 8 narrow gr 6 wide gr 8 wide same ########################################################################### June 26, 2009 ------------- crl code for the righ spectrometer was sfi2.crl in /adaqfs/home/a-onl/crl/. June 15, 2009 ------------- 1. High threshold discriminator threshold changed from -90 mV to -105 mV. 2. 100 Hz pulser is now in middle room of counting house. Can change to any value. 3. Added a new copy of T1 (no mixing of tagger into this) from 2nd floor to the pvdis setup in ch13 of 5th NIM-ECL module. It is in ch28 (starting from zero) of the 4th scaler (from left). New thresholds set today at 1:30 PM: Low: -15 mV Medium:-20 mV High: -105 mV [changed here only] Old thresolds were: Low: -15 mV Medium:-20 mV High: -90 mV June 12, 2009 ------------- Discriminator threshold of the gas-cherenkov signal changed from 40 mV to 240 mV. This is the discriminator in the RHSR 2nd floor (crate 1 (top) slot 20) which has only the gas-cherenkov signal input for pvdis. June 11, 2009 ########################################################################################################## Summary of Pion-Test-Run Activity: ---------------------------------- Production run-date: June 11, 2009 [Owl] RHRS dipole ramping down duration from 1.865 GeV/c to 0.7 GeV/c: 00:00 - 03:00 [3 hrs] Production duration: 03:00 - 08:20 [4 hrs and 20 min] Lef HRS production data of the host experiment uninterrupted. Beam energy=2.42552 GeV [LHRS angle= 12.5 deg] RHRS angle= 18 deg RHRS momentum=0.7 GeV/c Half-wave-plate IN Target polarization mode: Longitudinal RHRS runs Happex runs Target (Target Polarization) Prescale factor (T1/T2/T3/T4/T5/T6/T7/T8) --------- ----------- ---------------------------- ---------------------------------------- 22338 N/A Pol. 3He (60.3627%) 1/6/1/36/87/10/1000/65535 22339 31512 Pol. 3He (60.3627%) 1/6/1/36/87/10/1000/65535 22340-22342 31512 Pol. 3He (61.5964%) 1/6/1/36/87/10/1000/65535 22343-22344 31512 Pol. 3He (61.5964%) 1/10/1/10/20/10/1000/100 22345-22346 31513 Pol. 3He (61.5964%) 1/10/1/10/20/10/1000/100 22347 31514 Pol. 3He (62.5654%) 1/10/1/10/20/10/1000/100 There was a typo on halog entry 280545 for the RHRS run written as 22399 for 22339. ########################################################################################################## June 09, 2009 ------------- The following changes were made [does not affect the host expt]: 1. There was a 15-20 mV offset in the PS 740 module dedicated to TS (total sum) signals for group 5-8. The offset was brought back to zero. The offset in the PS 740 for fanning out the tagger is within 5mV. 2. The CAMAC discriminator (in the RHRS 2nd floor) in ROC 1 slot 20 has only one signal plugged in which is the gas-cherenkov signal dedicated to pvdis setup. Changed the threshold of that discriminator from 30 mV to 40 mV. This can be controlled remotely. The name of this discriminator is "PREX_r_disc" in the code "trigger_right.map". June 04, 2009 ------------- T3: ANDing module output for group4 [electron narrow] T4: gr4 shower SUM8 (discriminted) [before this date it was from gr5][aligned with T1] T5: gr4 Total sum (discriminted) [before this date it was from gr5][aligned with T1] T6: 100 Hz pulser. We brought back the RHRS shower signals for ADC16 and ADC55. Verified that by seeing on the scope. Since the cable responsible for shower block 56 had LEMO connector detached from the cable, we replaced that cable from shower block 8 signal cable. Since shower block 8 is on the first column and the first and last column never gave us signals (out of acceptance), we decided to use the available nearest cable (block 8) for block 56. [ Halog Entry number 278921] For current mapping of shower SUM8 and corresponding patchpannel on the same rack, see: http://hallaweb.jlab.org/experiment/E05-007/meetings/testrun_may09/20090602/SH_PP_front.pdf http://hallaweb.jlab.org/experiment/E05-007/meetings/testrun_may09/SH_Sum8_status_June2009.pdf June 02, 2009 ------------- PVDIS triggers: T3: ANDing module output for group4 [electron narrow] T4: Sum8 output of group5 shower [aligned with T1] T5: gr5 Total sum (discriminted)[aligned with T1] T6: 100 Hz pulser. We made a couple of changes in PVDIS setup as described below. 1. On re-checking which PVDIS triggers went from which group to the Trigger Supervisor, we found that T3, T4 and T5 went from group 5 while T6 was from group 4. Next we replaced T3 by a 100 Hz pulser and it (T3) went to trigger supervisor as T6 (because of programmable delay availability. The trigger labled as T6 in level translator in the 2nd floor goes as T3 and that labled as T3 goes as T6 in the trigger supervisor, we need to re-lable them latter). 2. Removed the 12 ns delay in gr5 in the branch of discriminator to 2nd ANDing module (done on May 19th access, see halog 274757) for electron narrow signals. 3. Aligned the newly formed PVDIS triggers (as defined above) T4 and T5 with T1 (currently T3 is not aligned with T1, need to investigate in later access). 4. Did regrouping in shower detector in 8 groups instead of pre-planned preshower regrouping. This will be detailed in later halog entry. With this regrouping, there are still all PMT signals observed that used to be observed previously, but we need to make new database so as to see previously seen PMT-histograms staying at the same PMT-channel. [ Halog Entry number 278544] ########################################################################### 05-28-2009 ---------- During opportunistic access, we made following changes: 1. Found that the ch9 of NIM-ECL 3rd module unplugged; plugged back in. This was the channel which was always giving "Empty Histogram" in TDC histogram-display. This TDC channel corresponds to pion narrow trigger of group 1. 2. Checked the tagger signal for the pileup/dead-zone technique (we never saw pileup or dead-zone signals before), found that the tagger and pvdis signals were not coincident at the coincident module (PS 758). After the change in tagger scheme during the last time access, we did not check the output from this ANDing module, we better had to. We changed the width of an ANDing module (the one just before the above mentioned ANDing module which ANDs tagger and PVDIS signal) in such a way that the pvdis signal is always within the width of tagger signal. # At the ANDing module (two inputs are the electron narrow or wide trigger - called "signal", and a delayed tagger), the delayed tagger is about 50ns wide and 10ns earlier than the signal, while the signal is about 15-20ns wide. This information will be useful in calculating the expected pile-up. delayed tagger ----------- -------------------- | | | | | | | | ------------------ 0 50ns signal (en or ew) ------------ --------------------------- | | | | | | | | -------- ~10ns ~25(30)ns -----------------------------------------------------------------> time # Also checked whether the PVDIS relay-racks (two of them) pose any problem in repairing left PMTs of S1-scintillator plane (or VDCs). If done carefully, there should not be any problem repairing those detectors. # Also checked the space for supports for the Happex-III detector on the left eye-beam (of RHRS) where the pvdis relay-racks are now sitting. Space occupied by pvdis racks in RHRS at the moment is as the following on the eye-beam looking from plateform when viewed by standing on the plateform (pvdis racks on left eye-beam): -First 8 inch empty -Next 31 inch occupied by the first pvdis relay-rack -Next 14 inch empty -Next 15 inch occupied by the 2nd pvdis relay-rack. Remaining space does not belong to PVDIS and may not be useful to Happex detector frame too. 05-26-2009 ---------- Made two entries today to check PVDIS DAQ (halog entry 276694): First Access: 9:30am, checked the 100Hz pulser used in deadtime measurement of group 5,6,7,8. It turns out that when we are using a PS740 to fan-out the pulser, the output offset was not set to zero. It had about +34mV offset on the scope and on the multimeter, which is consistent with the PS vs. SH spectrum of these 4 groups. Set all to zero; 2nd Access: 12:30pm, based on what we learned from above, also checked the offset of the other two 740s (used to form total shower, one 740 for 4 groups). Found all groups had an offset between +10 and +20mV. Group4 had an offset of -35mV. This is also consistent with what we see in data: group4 has a very low TS cut. Now set all offsets to zero. In order to keep the TS cuts roughly the same, increased the DH threshold from -80mV to -90mV. New thresholds set today at 12:30 PM: Low: -15 mV Medium:-20 mV High: -90 mV [changed here only] Old thresolds were: Low: -15 mV Medium:-20 mV High: -80 mV 05-20-2009 ---------- RHRS typical runs corresponding to different changes in PVDIS setup: 1. Thresholds mV (-30, -40, -50): 20209 (Run Timestamp: Fri Apr 24 06:56:19 EDT 2009) (This is an optics target run. No production runs on 3He taken at this kinematics.) 2. Thresholds mV (-20, -30, -40): 20264 (Run Timestamp: Sat Apr 25 03:36:59 EDT 2009) 3. Thresholds mV (-15, -20, -60): 20695 (Run Timestamp: Sun May 3 06:13:41 EDT 2009) (Gr5 PS has 32ns delay added. For Gr1-4, the vetos GC&SC and notGC&SC added. Later (during the access on May 05) it was found that the GC was not present there. That means, veto was not doing its expected job.) 4. Thresholds mV (-15, -20, -120): 20820 (Run Timestamp: Thu May 7 02:53:33 EDT 2009) (SH Gr2, Gr6, and Gr7 have 37ns delay removed; PS gr5 32ns delay also removed.) 5. Thresholds mV (-15, -20, -80): 20928 (Run Timestamp: Sat May 9 06:40:17 EDT 2009) (SH Gr2, Gr6, and Gr7 have 37ns delay removed; PS gr5 32ns delay also removed. Gr 4 has now new delays added: SH SUM8 to TS: 16 ns, PS SUM to TS 48 ns and PS SUM8 to medium threshold discriminator: 64 ns. Similarly for Gr3, these delay cables were 0 ns, 32 ns and 48 ns, respectively.) Note that all shower/preshower groups (SUM8 to Linear Sum P/S 740) have 2*37 ns delay cables in the standard setup. The same amount of delay cable also exists for all groups in preshower SUM8 to medium threshold discriminator. 6. Thresholds mV (-15, -20, -80):21084 (Run Timestamp: Wed May 13 14:20:35 EDT 2009) Removed Gr3 cables that were added in May 08.Restored the 37 ns cables from shower SUM8 to P/S 740 for Gr2, Gr6, and Gr7. Added following types of delay cables in Gr1, Gr2, Gr3, Gr5, Gr6, Gr7, and Gr8: for shower SUM8 to P/S 740 : 16 ns for preshower SUM8 to P/S 740 : 48 ns for preshower SUM8 to medium threshold discriminator: 60 ns. For the "SC.and.notGC" veto part, unplugged the veto cable going from GC. Instead, took "notGC" from the GC-output and it was input to the 4th quad of P/S 755 as normal input and switched the switch selctor to "2" position. Added veto signals to Gr5 to G8. Now all groups have veto signals. Also made the gas-cerenkov signal about 10 ns earler than T1 in veto-part. 7. Thresholds mV (-15, -20, -80): 21166 (Run Timestamp: Fri May 15 05:45:50 EDT 2009) Removed 16 ns delay from G1-G4 in shower branch from SUM8 to linear sum P/S 740. Also removed 32 ns delay in preshower branch from SUM8 to linear sum P/S 740; this cable was supped to be pulled out in earlier access, but it was there. Also made the gas-cerenkov signal about 3 ns earler than T1 in veto-part. 8. Thresholds mV (-15, -20, -80): 21392 (Run Timestamp: Tue May 19 23:10:06 EDT 2009) [See below [with the time-stamp 05-19-2009] for the changes made for this run compared to the run 21166] 05-19-2009 ---------- Took opportunistic access during beam study time and made the following changes in the PVDIS setup without any interference with the regular RHRS DAQ. 1. Removed 8 ns from group4 in shower branch of SUM8 to linear sum [P/S 740]. 2. Added 16 ns in group1 in shower branch of SUM8 to linear sum [P/S 740]. 3. Added 8 ns in group2 and group3 in shower branch of SUM8 to linear sum [P/S 740]; removed existing 8ns black cable and added 16 ns gray cable. 4. Only in group5, added 12 ns cables in both of the narrow signals that go from discriminators to the second ANDing module so as to see if that makes a difference compared to other groups. This is anticipated since all these narrow signals are faster by about 10-14 ns compared to their wide counterparts. [Replaced existing 4ns cables by 16 ns cables hence effectively adding only 12 ns.] 5. Prepared a 100 Hz pulser using a gate generator to make tagger. 6. Added tagger in group5-8, i.e., removed the notNIM cables from the first ANDing module and put them in the second ANDing module. 7. Added another P/S 740 module in the branch of preshower SUM8 to medium threshold discriminator to mix tagger with pvdis signals in group5 to group8. 8. The P/S 740 module and a new 4 ns cable introduce about extra 14 ns delay. Hence added 16 ns in the TS to Discriminator branch for these 4 groups only. 9. Added tagger in the existing linear summing module [P/S 740] which has signals from SUM8 of shower detectors in group5 to goup8 only. 10. Added tagger in the veto-inputs [in the P/S 755 first two quads]. The first quad has a gas-cherenkov signal while the second quad has T1. The selector switch is still in "1" position even after adding the tagger [100 Hz]. 11. Defined tagger as 100 Hz pulser ORed with T1. But here is a double standard: tagger for veto-part is only 100 Hz pulsar while the tagger for rest of the system is 100 Hz pulser ORed with T1. 12. Removed tagger input from the module which used to have tagger ORed with PVDIS signal while forming the circuitry to produce TDC inputs for pileup and "TDC dead-zone" spectra. Since we already have tagger in the PVDIS inputs in TS-part of the flow-chart diagram of PVDIS DAQ, its a mistake to OR this tagger again. May-14-2009 ----------- Today about 10 AM, the following changes were made: 1. Removed 16 ns cables from gr1 to gr4 in the shower branch in SUM8 to linear sum P/S 740 section. [Data taken afterwards show that gr4 did not have 16 ns cable removed. Also, we did not have to remove 16 ns from gr1, will add 16ns here in later access.] 2. Removed 32 ns from gr3 in the preshower branch in SUM8 to linear sum P/S 740 section. 3. Made the timing of T1 gas cerenkov in the PVDIS setup such that gas-cerenkov signal is about 3 ns earlier than T1. This has nothing to do with the host experiment T1. 4. This morning Xiaochao noticed that the RHRS preshower histogram number 13 was missing (block number 14). Bo and I checked the signal cable for that block, found that the cable was bad, replaced it with a 60 ns (56ns + 4 ns) cable. Now we see signal from that block. I would note that in gr3, in preshower branch of SUM8 to linear sum P/S 740, there was a 32ns cable that was supposed to pulled out in earlier access (May 11) but not done that time. I pulled that out today. May-12-2009 ----------- Items checked today: 1. Checked the signal cable lengths for shower and preshower cables. All of them are 60 ns long. 2. Checked the working of PVDIS veto, found nothing wrong. An update from Xiaochao, after chatting to Bogdan, is that the RHRS shower and preshower have different types of PMTs. Preshower PMTs are slower by about 30 to 40 ns than shower PMTs. This is what we see in data analysis, shower signals are 37 ns faster than preshower singls, though the signal cable lengths for both detectors are the same (60 ns long). For the LHRS, its not the case since both detectors have the same type of PMTs. From halog 272663: The left spectrometer was moved to 14.5 degrees. The right spectrometer was moved to 16 degrees. Big Bite was moved to 75 degrees. The scaler channels 0 to 7 in the RHRS scaler1 (in 4th slot) are T1 to T8. May-11-2009 ----------- We made the following changes in the PVDIS setup: 1. Removed Gr3 cables that were added in May 08 (see entry 271731). 2. Restored the 37 ns cables from shower SUM8 to P/S 740 for Gr2, Gr6, and Gr7 (see entry 271004 item number 5 for when they were added). 3. Added following types of delay cables in Gr1, Gr2, Gr3, Gr5, Gr6, Gr7, and Gr8: for shower SUM8 to P/S 740 : 16 ns for preshower SUM8 to P/S 740 : 48 ns for preshower SUM8 to medium threshold discriminator: 60 ns. 4. For the "SC.and.notGC" veto part, unplugged the veto cable going from GC. Instead, took "notGC" from the GC-output and it was input to the 4th quad of P/S 755 as normal input and switched the switch selctor to "2" position. 5. Added veto signals to Gr5 to G8. Now all groups have veto signals. May-09-2009 ----------- RHRS runs for different PVDIS setup changes: Thresholds mV (-30, -40, -50): 20209 (Run Timestamp: Fri Apr 24 06:56:19 EDT 2009) (This is an optics target run.) Thresholds mV (-20, -30, -40): 20264 (Run Timestamp: Sat Apr 25 03:36:59 EDT 2009) Thresholds mV (-15, -20, -60): 20695 (Run Timestamp: Sun May 3 06:13:41 EDT 2009) (Gr5 PS has 32ns delay added. For Gr1-4, the vetos GC&SC and notGC&SC added. Later (during the access on May 05) it was found that the GC was not present there. That means, veto was not doing its expected job.) Thresholds mV (-15, -20, -120): 20820 (Run Timestamp: Thu May 7 02:53:33 EDT 2009) (SH Gr2, Gr6, and Gr7 have 37ns delay removed; PS gr5 32ns delay also removed.) Thresholds mV (-15, -20, -80): 20928 (Run Timestamp: Sat May 9 06:40:17 EDT 2009) (SH Gr2, Gr6, and Gr7 have 37ns delay removed; PS gr5 32ns delay also removed. Gr 4 has now new delays added: SH SUM8 to TS: 16 ns, PS SUM to TS 48 ns and PS SUM8 to medium threshold discriminator: 64 ns. Similarly for Gr3, these delay cables were 0 ns, 32 ns and 48 ns, respectively.) Note that all shower/preshower groups (SUM8 to Linear Sum P/S 740) have 2*37 ns delay cables in the standard setup. The same amount of delay cable also exists for all groups in preshower SUM8 to medium threshold discriminator. May-08-2009 ---------- New thresholds set today around 12:30 PM: Low: -15 mV Medium:-20 mV High: -80 mV (changed here only) Old thresolds were: Low: -15 mV Medium: -20 mV High: -120 mV 1a. Added in Gr4 SUM8 to P/S 740 for shower: 16 ns for preshower: 48 ns Also from Gr4 preshower SUM8 to medium threshold discriminator added 64 ns. 1b. Repeated above for Gr3 but the delay was 0, 32, and 48 ns, respectively. 2. Changed high threshold from -120 mV to -80 mV 3. Verified that the tagger was 1024 Hz clock ORed with T1. Since T1 is common stop, it should also be ORed with tagger so as to see the deadzone in an individual TDC signal. 4. Added 22ns to the available T1 to PVDIS setup (this has nothing to do with the RHRS T1 (used by the host experiment) since the cable for T1 was already available in the PVDIS setup, we just added 22 ns right there). May-05-2009 ----------- We made a couple of changes in the PVDIS setup in the RHRS: 1. Changed the discriminator high threshold from -60 mV to -120 mV. New thresholds set today around 09:30 AM: Low: -15 mV Medium:-20 mV High: -120 mV (changed here only) Old thresolds were: Low: -15 mV Medium: -20 mV High: -60 mV 2. Tested a veto signal; did not see gas-cherenckov signal. While tracing back, found that, in the 2nd floor, an ECL cable from discriminator to level translator was missing. Revived. Also noticed that a knob in the 3rd quad of PS 755 module (which forms the veto using two inputs) was in position "1" instead of being in position "2". 3. Added 8 cables (4ns each) from the tagger circuit ORing module (where tagger is ORed with pvdis signals) to 5th NIM-ECL module in channels 5-12. 4. Disconnected a ribbon cable from the back of the 2nd NIM-ECL module and connected it to the back of 5th NIM-ECL module. This ribbon cable goes to the 4th scaler top postion as before. This was a redundant ribbon cable that used to connect from the back of the 1st NIM-ECL module to the 4th scaler top position (there is already another ribbon cable that connects the 1st NIM-ECL module to the first scaler). 5. Reduced 37 ns in shower part of the SUM8 to linear sum (PS 740) for group2, group6 and group7. Removed the 32 ns newly added cable (on May 01) from preshower group5. ################################################################################################################# For run 20762 # Map RHRS Measured Voltage 1 : -674 -699 -701 -661 -660 -760 -2401 -703 -1830 -1099 -1072 -976 -871 -2466 -1012 2 : -721 -699 -700 -674 -725 -699 -2191 -698 -2042 -1012 -1013 -1130 -1056 -2532 -971 3 : -730 -699 -700 -685 -615 -679 -2341 -718 -1921 -1126 -994 -1150 -1045 -2601 -926 4 : -730 -700 -9 -695 -615 -675 -2152 -750 -1860 -1103 -1075 -1085 -1056 -2491 -14 5 : -706 -700 -701 -697 -706 -685 -1901 -851 -1827 -1098 -1092 -1055 -1342 -2525 -870 6 : -698 -700 -690 -659 -629 -678 -2012 -751 -2111 -1078 -1059 -1120 -1127 -2400 -1196 7 : -717 -700 -699 -826 -665 -675 -2252 -13 -2162 -1073 -1092 -1106 -1096 -2576 -961 8 : -668 -701 -647 -9 -684 -632 -2262 -17 -2531 -1024 -1066 -1033 -1232 -2550 -1049 9 : -677 -700 -683 -711 -702 -651 -2152 -18 -2082 -1069 -1207 -1051 -1077 -2501 -10 10 : -696 -701 -672 -686 -691 -685 -2302 -22 -2042 -1068 -1122 -1050 -966 -2420 -12 11 : -672 -700 -659 -683 -750 -668 -1932 -20 -1921 -1072 -976 -1086 -976 -16 -1212 12 : -675 -700 -689 -672 -12 -712 -2202 -18 -2273 -1057 -976 -1096 -975 -29 -8 # Map RHRS Measured Current 1 : -160 -166 -167 -157 -157 -178 -1474 -167 -1175 -282 -275 -250 -223 -458 -621 2 : -172 -166 -167 -161 -172 -171 -1345 -166 -1249 -259 -259 -290 -270 -470 -599 3 : -174 -167 -166 -163 -146 -163 -1437 -171 -1178 -288 -255 -295 -268 -491 -574 4 : -174 -166 1 -165 -146 -166 -1321 -178 -1141 -283 -275 -279 -271 -463 2 5 : -168 -166 -166 -166 -168 -166 -857 -202 -1121 -281 -280 -271 -344 -483 -537 6 : -166 -167 -164 -157 -149 -167 -1232 -179 -1294 -276 -272 -287 -289 -426 -738 7 : -171 -166 -167 -196 -158 -165 -1381 -0 -1326 -275 -279 -284 -281 -481 -594 8 : -159 -167 -154 -0 -163 -155 -1388 -0 -1652 -262 -273 -265 -316 -480 -653 9 : -161 -166 -162 -169 -167 -159 -1318 -0 -1277 -275 -309 -269 -276 -466 -0 10 : -164 -166 -159 -163 -164 -168 -1412 0 -1248 -274 -288 -269 -248 -446 1 11 : -160 -166 -157 -162 -179 -164 -1184 0 -1178 -275 -250 -278 -250 0 -748 12 : -163 -167 -163 -160 0 -172 -1347 -0 -1478 -271 -251 -281 -249 0 2 ################################################################################################################# May 1,2009 (1 PM) ---------------- Took oppurtunistic controlled access just before noon while MCC was doing injector work. In addition to changing ethernet cables as explained by Bob in the halog entry 270208, I also changed some cables in PVDIS setup. The following is the change: 1. Added 32 ns cable in group5 preshower SUM8 to linear sum module. 2. Added GC&SC veto to first ANDing module, also added notGC&SC veto signal to first ORing module. 04-29-2009 ---------- New thresholds set today around 1:30 PM: Low: -15 mV Medium:-20 mV High: -60 mV Old thresolds were: Low: -20 mV Medium: -30 mV High: -40 mV Added a 5th NIM-ECL module. Ch1-Ch4 in this module are: ch1: Veto (after inversion) GC & SC ch2: Veto (after inversion) notGC & SC ch3: GC (later found that GC did not have signal on the replay. While checking on the later access (May 5th) there was no GC singal at all.) ch4: SC (i.e. T1 which is also plugged in ch13 of 3rd NIM-ECL module. Its plugged in here so as to check if these two agree.). All these channels are also sent to the Fastbus TDC ROC2 Slot12 top 3rd position for ribbon cable. ########################################################################### 04-24-2009 ---------- New thresholds set today around 6 PM: Low: -20 mV Medium:-30 mV High: -40 mV Old thresolds were: Low: -30 mV Medium: -40 mV High: -50 mV PVDIS dedicated triggers: T3, T4, T5, and T6. Currently all these triggers come from group 5 of pvids DAQ. Since T3 to T6 are prescaled away in RHRS runs, we can not use the cuts related to these trigger types so as to select a signal from the particular group (i.e. group5 in the current setup). 04-23-2009 ---------- PVDIS present status: Discriminator thresholds: low = -30 mV, medium = -40 mV, and high = -50 mV. As of yesterday evening MPS was missing. Host expt also needs MPS. FADC ---- FADC ch1 has group2 shower SUM signal and is delayed by about 100 ns compared to its "common-start". The common-start is a trigger obtained by ORing T1 (which S1 & S2) with 1024 Hz clock. This trigger is also the main DAQ trigger if pvdis is run stand-alone. I recall that Huaibo used a common stop mode of FADC running. May be we can try both. Changing to the common stop mode from the current state of common start mode is possible by simply removing the delay from the signal connector and adding it to the common-start connector. Fastbus TDC ----------- All pvdis triggers are connected by 4-ribbon cables to the RHRS Fastbus TDC giving a total channel of 64. Ch0-47 are regular pvdis triggers. Ch48-55 are the tagger-part of the TDC channels. Ch56-63 (the 64th channel is ch63) are electron-narrow, electron-wide, pion-narrw, pion-wide, T1, BCM, 1024 Hz clock, and 100 kHz clock, respectively. Here tagger means the pvdis triggers ORed with 1024 clock and the result being ANDed with the clock again. The pvdis trigger for tagger come from gr1 and gr2 for both electron wide/narrow and pion wide/narrow. Control Signal Sequence ----------------------- All scalers (4 of them, the third from left in the relay rack is of NIM input type and has nothing plugged into it except a 100 kHz clock in the first channel) have LNE (ctrl ch1), helicity (ctrl ch2), and MPS (ctrl ch4). ----------- ------------------------ ------------ MPS | | | | | | | | | | | | | | | | --------- --------- ------------- ---------------------------- --------------- LNE | | | | | | | | | | | | | | | | ---- ---- --------------- ---------------- Helicity | | | | | | | | ------------------------------- The sequence of MPS, LNE and Helicity should stay in such a way that the falling edge of both LNE and helicity are within the MPS (yes-state) and the rising of the helicity should also be within the next MPS (yes-state) as shown above. # Delay amount from PMTs of preshower/shower to Scaler: Preshower: 1. PMT to SUM8 cable: 60 ns 2. SUM8 module: 10 ns 3. SUM8 to patch pannel cable: 8 ns 4. Patch pannel to Total Sum (P/S 740) cable: 37+16 = 53 ns 5. P/S 740 module: 10 ns 6. P/S 740 to discriminator cable: 16 ns 7. Discriminator module: 10 ns 8. Discr. to P/S 758 (&) cable: 4 ns 9. P/S 758 (&) module: 10 ns [This is where the VETO signal from T1 and Gas-cher is plugged in] 10. P/S 758 to P/S 757 cable: 4 ns 11. P/S 757 module: 10 ns [Another place to plugg in VETO] 12. Discr. high thr narr to to Discr. high ther wide cable: 4 ns 13. ############################################################### title RHRS FastBus pvdis TDC (1-16) Rpvdis0 -title "TS1H" Rpvdis1 -title "TS2H" Rpvdis2 -title "TS3H" Rpvdis3 -title "TS4H" Rpvdis4 -title "TS5H" Rpvdis5 -title "TS6H" Rpvdis6 -title "TS7H" Rpvdis7 -title "TS8H" Rpvdis8 -title "PS1H" Rpvdis9 -title "PS2H" Rpvdis10 -title "PS3H" Rpvdis11 -title "PS4H" Rpvdis12 -title "PS5H" Rpvdis13 -title "PS6H" Rpvdis14 -title "PS7H" Rpvdis15 -title "PS8H" title RHRS FastBus pvdis TDC (17-32) Rpvdis16 -title "E1NA" Rpvdis17 -title "E2NA" Rpvdis18 -title "E3NA" Rpvdis19 -title "E4NA" Rpvdis20 -title "E5NA" Rpvdis21 -title "E6NA" Rpvdis22 -title "E7NA" Rpvdis23 -title "E8NA" Rpvdis24 -title "E1WA" Rpvdis25 -title "E2WA" Rpvdis26 -title "E3WA" Rpvdis27 -title "E4WA" Rpvdis28 -title "E5WA" Rpvdis29 -title "E6WA" Rpvdis30 -title "E7WA" Rpvdis31 -title "E8WA" title RHRS FastBus pvdis TDC (33-48) Rpvdis32 -title "P1WA" Rpvdis33 -title "P2WA" Rpvdis34 -title "P3WA" Rpvdis35 -title "P4WA" Rpvdis36 -title "P5WA" Rpvdis37 -title "P6WA" Rpvdis38 -title "P7WA" Rpvdis39 -title "P8WA" Rpvdis40 -title "P1NA" Rpvdis41 -title "P2NA" Rpvdis42 -title "P3NA" Rpvdis43 -title "P4NA" Rpvdis44 -title "P5NA" Rpvdis45 -title "P6NA" Rpvdis46 -title "P7NA" Rpvdis47 -title "P8NA" title RHRS FastBus pvdis TDC (49-64) Rpvdis48 -title "Pileup1: E1NA" Rpvdis49 -title "Pileup2: E1WA" Rpvdis50 -title "Pileup3: E2NA" Rpvdis51 -title "Pileup4: E2WA" Rpvdis52 -title "Pileup5: E3NA" Rpvdis53 -title "Pileup6: E3WA" Rpvdis54 -title "Pileup7: E4NA" Rpvdis55 -title "Pileup8: E4WA" Rpvdis56 -title "El nar" Rpvdis57 -title "El wide" Rpvdis58 -title "Pi nar" Rpvdis59 -title "Pi wide" Rpvdis60 -title "T1" Rpvdis61 -title "BCM d10" Rpvdis62 -title "1024 Hz clock" Rpvdis63 -title "100 kHz clock" title RHRS FastBus pvdis TDC (65-76) Rpvdis64 -title "SC and GC" Rpvdis65 -title "SC and notGC" Rpvdis66 -title "GC" Rpvdis67 -title "SC (i.e. T1)" Rpvdis68 -title "Dead-zone1: E1NA" Rpvdis69 -title "Dead-zone2: E1WA" Rpvdis70 -title "Dead-zone3: E2NA" Rpvdis71 -title "Dead-zone4: E2WA" Rpvdis72 -title "Dead-zone5: E3NA" Rpvdis73 -title "Dead-zone6: E3WA" Rpvdis74 -title "Dead-zone7: E4NA" Rpvdis75 -title "Dead-zone8: E4WA" ###########################################################################