	<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
18	74	531339	13	81	533125	13	76	407027	12	29-JUN-07

Thr_Max in register units for M3R4-18

Thr_Max in register units for M3R4-18

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	72	65	66	76	79	68	79	72	72	68	81	67	86	72	80	75
FEB-2	78	80	80	87	81	80	75	79	77	85	87	82	81	82	85	84
FEB-3	80	91	75	80	77	79	74	73	72	72	71	77	75	73	72	77

Noise rate at Thr_Max [counts/sec] for M3R4-18

Noise rate at Thr_Max [counts/sec] for M3R4-18

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	491765	676352	489110	477279	575426	388183	530169	640086	391571	559809	479904	491474	429253	542969	602676	735401
FEB-2	512096	541308	686168	492135	456817	606811	392749	568792	415536	530363	542057	392241	430193	517062	662495	783176
FEB-3	374806	569589	438802	518697	358788	345290	492859	248574	379650	332915	312312	301744	411143	332203	605676	489388