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Both DS1 and DS2 have companion mobile equipment racks , – D50 and D51 respectively.  The racks are nearly identical and each contain power supplies and readout electronics for detectors, a Digi, a 4-channel stepper motor controller, an EPICS IOC server, and (whatever else).

(picture of a mobile rack and probably should make rack profiles)

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There's a few motorized components and stages in each detector chamber.  Taking a look at the motor EPICS PV descriptions we can get an idea of what they are.

Obtaining the descriptions of the DS1 motors,

cxi-control:~> echo -e "Motor PV\t\t\tDescription:"; caget CXI:DS1:MMS:{01..14}.DESC

Motor PV                       Description

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:

CXI:DS1:MMS:01.DESC            vee_slide (m5) X US North

CXI:DS1:MMS:02.DESC            vee_lift (m4) Y US North

CXI:DS1:MMS:03.DESC            flat_lift (m3) Y US South

CXI:DS1:MMS:04.DESC            cone_slide (m2) X DS

CXI:DS1:MMS:05.DESC            cone_lift (m1) Y DS

CXI:DS1:MMS:06.DESC            In-Vacuum LS-180

CXI:DS1:MMS:07.DESC            Be lenses X

CXI:DS1:MMS:08.DESC            Be Lenses Y (not locked out)

CXI:DS1:MMS:09.DESC            ATT X

CXI:DS1:MMS:10.DESC            ATT Y

CXI:DS1:MMS:11.DESC            ATT Z

CXI:DS1:MMS:12.DESC            PP X Stepper Motor

CXI:DS1:MMS:13.DESC            PP Y Stepper Motor

CXI:DS1:MMS:14.DESC            Pulse Picker Motor

and of DS2,

cxi-control:~> echo -e "Motor PV\t\t\tDescription:"; caget CXI:DS2:MMS:{01..07}.DESC

Motor PV                     

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  Description:

CXI:DS2:MMS:01.DESC            X US North Lift

CXI:DS2:MMS:

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02.DESC            Y US North Lift

CXI:DS2:MMS:03.DESC            Y US South Lift

CXI:DS2:MMS:04.DESC            X DS Lift

CXI:DS2:MMS:

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05.

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DESC            Y DS Lift

CXI:DS2:MMS:06.DESC            In-Vacuum LS-180

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CXI:DS2:MMS:07.

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DESC            

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Beamstop Y

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