	<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
33	76	435696	13	78	542554	13	79	471532	12	25-JUN-07

Thr_Max in register units for M3R4-33

Thr_Max in register units for M3R4-33

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	74	90	69	78	79	81	64	87	71	82	65	83	69	83	67	77
FEB-2	82	86	87	80	75	78	77	71	78	78	72	81	76	72	79	68
FEB-3	82	79	75	76	77	75	78	86	73	79	77	75	79	80	84	83

Noise rate at Thr_Max [counts/sec] for M3R4-33

Noise rate at Thr_Max [counts/sec] for M3R4-33

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	633116	542429	557958	427849	331079	365939	331494	323658	301735	357791	254792	413005	367861	637641	586871	537912
FEB-2	450702	600368	850423	588054	468282	591888	417646	452681	522326	333728	383472	546022	549277	549152	595537	781305
FEB-3	384889	694407	474710	433829	559231	610574	357717	315519	419585	298146	430426	410813	390885	498594	617623	647558