Fragment Mass Analyzer upgrades and X-array status

1
Fragment Mass Analyzer upgradesand X-array
status

• Darek Seweryniak, ANL

2
High beam intensity and efficiency updates

• FMA upgrades
• New beam dump
• New entrance quadrupole doublet
• Implantation station upgrades
• 160X160 DSSD
• Digital electronics
• X-array status
• New frame
• 5th super clover

3
New beam dump

• Unreacted beam strikes the inside of the anode
  and the tank near the exit from the tank
  relatively close to the electrodes
• Move the interaction area away from the
  electrodes
• Avoid dumping the beam on the anode
• Requires significant modification of the tank

4
Before
After
B. DiGiovine
5
New entrance quads

• 1st quad shorter with higher fields
• similar concept was used in EMMA
• Increase the solid angle from 8 msr to 12 msr at
  relatively short distances between target and
  FMA

6
FMA at 293 mm stand-alone
OLD Qy0.038 rad Qy,max0.0401 rad
NEW Qy0.060 rad Qy,max0.0634 rad
Qx0.046 rad Qx,max0.0495 rad
Qx0.059 rad Qx,max0.0591 rad
W7.4 msr
W11.8 msr
7
FMA implantation station
8
New high-granularity DSSD
160x160 strips64mm x 64 mm100, 140 mm thick
9
160X160 DSSD in-beam test
b
ln t
109Te/5s
109I/100ms
E
10
Digital DAQ for DSSD
CPU
IOC 4XDIG
IOC 4XDIG
IOC 4XDIG
CPU
Disk array
NETWORK switch
IOC master TTC 2 router TTC

• Based on the GRETINA DAQ (320 channels)
• Synchronization with analog DAQ through
• a common clock signal
• We have just started implementing 160-channel DAQ

.
11
New X-array frameStephen Heimsatz

• 5 clover detectors in a box geometry
• 64x64 mm, 160x160 DSSD

12
X-array
13
X-array frame features

• Frame horizontal movement (rails) and vertical
  adjustment
• In-out detector adjustment
• All electronics on board but ADC
• Laptop for controlling and monitoring
• portable (transportation mode)
• Auto LN2 system on board (to be implemented)

14
Plastic beta detectors

• Identify DSSD pixel beta originated from
• Thin plastic scintillators with photodiodes
• Identify beta hitting a Ge detetector
• Full beta energy in Ge (high energy betas)

Ge
plastic
b
Ge
FMA
plastic
Ge
15
Thank you!