	<i>Thresholds Scan<br />185 M3R4 chambers passed the tests</i></font> Thresholds Scan 185 M3R4 chambers passed the tests

Tables below present:
- Thr_Max(r.u.), Thresholds in register units at Maximum of noise rate;
- N_Max, Noise rate at Thr_Max in counts/sec;
- D_100 = Thr_100(r.u.) - Thr_Max(r.u.) where Thr_100(r.u.) is the threshold in register units at noise rate = 100/s.
The following expression relates the real threshold (measured from the base-line of physical signals) with the thresholds determined by the register units:
Thr(fC)*S(r.u./fC) = Thr(r.u.) - Thr_Max(r.u.)+ OFFSet(r.u.).
Here, OFFSet=17 register units;
S=3.40 r.u./fC is the charge sensitivity corresponding to S=8mV/fC taken for M3R4 chambers;
(Note, that 1 register unit = 2.35 mV)

	FEB-1. Mean values.			FEB-2. Mean values.			FEB-3. Mean values.
Chamber	Thr_Max [r.u.]	N_Max [counts/s]	D_100 [r.u.]	Thr_Max [r.u.]	N_Max [counts/s]	D_100 [r.u.]	Thr_Max [r.u.]	N_Max [counts/s]	D_100 [r.u.]	Test Date	Plots	Comments
51	79	510587	12	78	489767	12	81	424431	13	04-JUL-07

Thr_Max in register units for M3R4-51

Thr_Max in register units for M3R4-51

FEB Channels	Ch_1	Ch_2	Ch_3	Ch_4	Ch_5	Ch_6	Ch_7	Ch_8	Ch_9	Ch_10	Ch_11	Ch_12	Ch_13	Ch_14	Ch_15	Ch_16
FEB-1	79	81	81	84	80	81	79	83	77	79	74	80	80	70	75	78
FEB-2	79	71	81	76	79	74	83	70	76	73	85	67	86	80	82	80
FEB-3	78	82	75	86	76	88	71	88	79	91	78	82	71	84	82	84

Noise rate at Thr_Max [counts/sec] for M3R4-51

Noise rate at Thr_Max [counts/sec] for M3R4-51

FEB Channels	Ch_1	Ch_2	Ch_3	Ch_4	Ch_5	Ch_6	Ch_7	Ch_8	Ch_9	Ch_10	Ch_11	Ch_12	Ch_13	Ch_14	Ch_15	Ch_16
FEB-1	506788	540736	961063	453624	474087	347840	481770	411586	416819	273034	496177	319290	661453	399075	713550	712494
FEB-2	688846	509225	733148	450391	394774	412680	356923	389175	337715	481073	639833	305984	437331	417650	545122	736397
FEB-3	458696	471875	484904	403494	401552	385647	350879	360767	323193	380826	412486	218798	341365	483459	543293	769662