	<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
23	81	415311	12	88	557661	13	82	468757	12	26-JUN-07

Thr_Max in register units for M3R4-23

Thr_Max in register units for M3R4-23

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	86	90	83	77	80	85	85	75	84	74	79	78	78	83	76	85
FEB-2	88	91	86	89	91	93	83	90	82	93	85	90	82	90	86	85
FEB-3	87	79	78	84	90	80	83	77	83	83	81	81	83	82	90	77

Noise rate at Thr_Max [counts/sec] for M3R4-23

Noise rate at Thr_Max [counts/sec] for M3R4-23

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	363354	558334	461243	479691	302481	300787	332853	291271	372320	442535	278966	407504	349379	552535	536586	615141
FEB-2	519235	586756	552545	441505	421868	460376	423782	476401	496856	462670	519664	672368	534707	504331	1027390	822119
FEB-3	449524	546741	506846	597580	447529	461719	353763	355681	491261	369108	490437	324655	433800	504048	549355	618070